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      id="h_1_127e907d-3d3d-d10f-0523-a8c1bfc81819"
      unitRef="pure">0.0076</rr:AnnualReturn2015>
    <rr:AnnualReturn2024
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_10_9cd5b933-9907-349f-ca29-a5e62c7ec06a"
      unitRef="pure">0.0068</rr:AnnualReturn2024>
    <rr:AnnualReturn2016
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2_d27c645d-b1d8-bd0a-fa57-8f9591148d74"
      unitRef="pure">0.0092</rr:AnnualReturn2016>
    <rr:AnnualReturn2017
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_3_084eaf4c-221d-3682-8b45-0759ef811759"
      unitRef="pure">0.0219</rr:AnnualReturn2017>
    <rr:AnnualReturn2018
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_4_a13c7e3d-6846-6062-a22b-e5ee0f386c0b"
      unitRef="pure">0.0074</rr:AnnualReturn2018>
    <rr:AnnualReturn2019
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_5_9dda4364-d125-44c5-19cc-a04d028c834b"
      unitRef="pure">0.0671</rr:AnnualReturn2019>
    <rr:AnnualReturn2020
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_6_b8c14f1b-e63a-ac8a-2327-77be4160c86d"
      unitRef="pure">0.0792</rr:AnnualReturn2020>
    <rr:AnnualReturn2021
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_7_1c4121f5-80e5-c5d1-0dfd-9fa08e0c4190"
      unitRef="pure">-0.0254</rr:AnnualReturn2021>
    <rr:AnnualReturn2022
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_8_60bef37a-1ac1-0912-5732-76265ae54c2e"
      unitRef="pure">-0.1269</rr:AnnualReturn2022>
    <rr:AnnualReturn2023
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_9_50961803-0843-97f8-3a6b-13d97134ad1c"
      unitRef="pure">0.0421</rr:AnnualReturn2023>
    <dei:DocumentCreationDate
      contextRef="DefaultContext"
      id="h_05_66287b04_330f_44b9_9274_c006f0311d9f">2025-02-25</dei:DocumentCreationDate>
    <dei:EntityInvCompanyType
      contextRef="DefaultContext"
      id="h_01_51ac8a17_ffd2_4a5f_8848_b5cc0c9b1a7e">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName
      contextRef="DefaultContext"
      id="h_02_370255ae_261f_4def_b767_4526be7a1b0b">iShares Trust</dei:EntityRegistrantName>
    <dei:DocumentEffectiveDate
      contextRef="DefaultContext"
      id="h_04_b95b516e_2f9e_47d0_a9d0_0a89db495230">2025-02-28</dei:DocumentEffectiveDate>
    <rr:ProspectusDate
      contextRef="DefaultContext"
      id="h_03_23b0f20b_6a8e_4cfc_afba_85e3aaebb95e">2025-02-28</rr:ProspectusDate>
    <rr:RiskReturnHeading
      contextRef="S000076777Member"
      id="t_20_ece47d82_6d94_0c03_efa0_328e7e21eb3b"> iSHARES&#xae; 20+ YEAR TREASURY BOND BUYWRITE STRATEGY ETF  Ticker: TLTWStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000076777Member"
      id="t_1_2ab9c4d5_40c6_48f4_b366_ee5eaf85a36d">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000076777Member"
      id="t_2_6ad6a580_a25c_45e6_8149_0dc8b7257ace"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares 20+ Year Treasury Bond BuyWrite Strategy ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index that reflects a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy of holding the iShares 20+ Year Treasury Bond ETF while writing (selling) one-month call options to generate income.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000076777Member"
      id="t_3_62213d35_fba2_4a5e_99e7_74cf6b7f9852">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000076777Member"
      id="t_4_4efefa69_5b92_4869_a33b_d4296a629728"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000076777Member"
      id="t_58_78aa017c_ee62_ae4f_6d3a_e75d3fa85304">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000076777Member"
      id="t_57_336a59fb_d719_0e5a_9603_0a951cdf6211">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_1_55535cd0_4896_4db4_8efe_5f71da435417"
      unitRef="pure">0.0020</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_2_1d7d5b88_857c_40c3_bb16_4d32b9fc828e"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_3_f039f5ab_b021_4a6a_97f4_bcdb7bb86bb1"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_4_c0b04248_758f_431d_92de_2328d023d914"
      unitRef="pure">0.0015</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_5_4b961297_45a6_45aa_98ea_05ea35c2f07e"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000076777Member"
      id="t_21_90104c69_73f0_d735_a8e1_906483971225">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000076777Member"
      id="t_22_50bffb1e_641a_a3b3_67eb_24ebed180299">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000076777Member_C000236812Member"
      decimals="INF"
      id="h_6_6e9aa530_6294_49be_a888_058fa9e88589"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000076777Member_C000236812Member"
      decimals="INF"
      id="h_7_a3621952_2985_48ad_999d_ebe6e6cff018"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000076777Member_C000236812Member"
      decimals="INF"
      id="h_8_309c2190_f692_4f95_8968_4875a147f261"
      unitRef="USD">197</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000076777Member_C000236812Member"
      decimals="INF"
      id="h_9_14f89a5e_2847_4048_ae5a_8fc5eebc56c3"
      unitRef="USD">443</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000076777Member"
      id="t_23_6eaf5abb_5905_4372_75a3_f667f3a5302b">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000076777Member"
      id="t_24_88dc8c83_fe22_681f_9748_551253f9b4aa">The Fund or the iShares 20+ Year Treasury Bond ETF (&#x201c;TLT&#x201d; or the &#x201c;Underlying Fund&#x201d;) may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate for the Fund or the Underlying Fund may indicate higher transaction costs and may cause the Fund or the Underlying Fund to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to the Underlying Fund included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio. To the extent the Underlying Fund incurs costs from high portfolio turnover, such costs may have a negative effect on the performance of the Fund.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000076777Member"
      decimals="4"
      id="h_10_7a669a07_2383_42b2_801f_6a08f6532870"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000076777Member"
      id="t_6_c2ef2363_1342_4059_ab60_1cb03130b2c7"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000076777Member"
      id="t_7_4a7caaca_2430_4011_b34c_d9dc955a8317"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Cboe TLT 2% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;OTM BuyWrite Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is provided &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Cboe Global Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Cboe&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is designed to measure the performance of a strategy of holding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund while writing (selling) one-month call options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on the Underlying Fund to generate income. A strategy of holding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a stock or basket of stocks and selling call options that reference &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the stock or basket of stocks is commonly known as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;buy-write&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; strategy.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund seeks to track the investment results of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. Treasury 20+ Year Bond Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of publicly issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have a remaining maturity of 20 or more years and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have $300 million or more of outstanding face value, excluding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amounts held by the Federal Reserve System. Index constituents &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also must be fixed-rate and denominated in U.S. dollars. Excluded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Underlying Fund's underlying index are inflation-linked &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, Treasury bills, cash management bills, any government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agency debt issued with or without a government guarantee and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;zero-coupon issues that have been stripped from coupon-paying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds. The Underlying Fund's underlying index is market value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted, and its constituents are updated on the last business &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;day of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index utilizes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;European-style&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; call options. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call option in the Underlying Index has a strike price closest to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;102% of the closing value of the Underlying Fund one day prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the roll date. The roll date is the day that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;closes out open call option positions by purchasing the offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call option positions and subsequently writes new call options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that will expire the following month.&#160;&#160;The roll date is the business &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;day preceding the expiration date of the options in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. The Fund will write options that trade on national securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges. Although the Underlying Index will seek to select an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option with a strike price closest to 102% of the closing value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund one day prior to the roll date, if the premium &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that an option writer would hypothetically receive on the new &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;102% call option on the day prior to the roll date is below five &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis points of the closing price of the Underlying Fund on the day &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prior to the roll date, the Underlying Index will instead select the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call option with the strike price closest to 100% of the closing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Fund. The Underlying Index&#x2019;s selection of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an option with a strike price closest to 100% rather than 102% in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;these circumstances is designed to prevent the Underlying Index &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;writing&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; an option that would cost an option writer more in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;potential trading costs than the option writer would receive in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;premium. Unlike American-style options, European-style options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can only be exercised on the expiration date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will seek to write call options up to (but not exceeding) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the full amount of shares of the Underlying Fund held in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the short position in the call option is offset, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the long position the Fund holds in shares of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund). In certain circumstances, the Fund may not write any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options, primarily if the option is far &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;out of the money&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strike price exceeds the price of the Underlying Fund) and would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generate minimal premium income. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By writing a call option, the Fund receives a premium and gives &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchaser of the option the right to purchase shares of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund at the strike price of the option at expiration. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the Fund does not expect to physically settle &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding option positions as it will generally purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;offsetting call options on the roll date as necessary to close out &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the open call position(s). By writing the call option(s), the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will not participate in market gains of the Underlying Fund above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the strike price but will fully participate in any market losses if the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund declines in value. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may write options on different dates than the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index's roll date and may use strike prices, contract sizes, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity dates that are different than those for the options used in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. In addition, the Fund may write options that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are not on the Underlying Fund but that have investment and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics, in the aggregate, similar to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options used in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, a significant portion of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is indirectly represented through its holdings in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund by publicly-issued U.S. Treasury securities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments selected are expected to have, in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate, investment characteristics (based on factors such as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market value and industry weightings), fundamental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (such as return variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security's price sensitivity to a change in interest rates), maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or credit ratings and yield) and liquidity measures similar to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of an applicable underlying index. The Fund&#160;and the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund may not hold all of the securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or other instruments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and may hold certain securities or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments that are not included in the applicable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Cboe and is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and BFA. The Index Provider determines the composition &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and relative weightings of the securities in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities) and repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered to be issued by members of any industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000076777Member"
      id="t_25_3a81615e_62ef_70fd_8840_1c518b035a39"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000076777Member"
      id="t_8_a7a6c694_8e41_46e5_9cc1_a93e4753c8a5"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000076777Member_RiskLoseMoneyMember"
      id="t_26_7b59cb87_3e2f_f47b_0ad8_8c71558ba004">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_CoveredCallOptionRiskMember"
      id="t_27_f97e8a32_3719_fd57_1d9b_012d2e9f3c97"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Covered Call Option Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By writing covered call options in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return for the receipt of premiums, the Fund will give up the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;opportunity to benefit from potential increases in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund above the exercise prices of the written options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but will continue to bear the risk of declines in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund. The premiums received from the options may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not be sufficient to offset any losses sustained from the volatility &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund over time. In addition, the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell shares of the Underlying Fund will be limited while the option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is in effect unless the Fund extinguishes the option position &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the purchase of an offsetting identical option prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expiration of the written option.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The covered call strategy may be subject to imperfect matching or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price correlation between the written options and the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could reduce the Fund&#x2019;s returns. Exchanges may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspend the trading of options (for example due to volatile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets or if trading in the Underlying Fund is halted). If trading is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, the Fund may be unable to write or purchase options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at times that may be desirable or advantageous to the Fund to do &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;so. If the Fund is unable to extinguish the option position before &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exercise, the Fund may be required to deliver the corresponding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of the Underlying Fund, resulting in increased transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs, tracking error, underinvestment, and potentially the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;realization of capital gains. Further, this could lead to re-purchasing&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; shares of the Underlying Fund or selling the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corresponding options at a less favorable price than the fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;might have received had the options been extinguished. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;uses options which are struck once per month, and the timing of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the price of the Underlying Fund may affect the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. For example, if the Underlying Fund experiences a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;drop in price followed by a quick rebound, the Fund may be &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unable to fully participate in the rebound if the rebound occurs &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;immediately after the Fund&#x2019;s roll date. In addition, if trading is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, the Fund may be unable to purchase an offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option for purposes of closing out an existing written option at the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally scheduled time and date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will be affected by movements in interest rates and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond yields and the resulting share price of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In a falling interest rate environment and other environments in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which credit spreads narrow, the Underlying Fund is generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to appreciate in price, and the Fund may underperform &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund as price appreciation for the Fund is limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the exercise prices of the options written by the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_USTreasuryObligationsRiskMember"
      id="t_28_28c2ddcb_75be_96cc_8afe_1311160d29b1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_InterestRateRisksMember"
      id="t_29_4b6f0747_85af_c8b8_63b0_442dd034229d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_MarketRiskMember"
      id="t_30_ad7691cc_5fb3_628c_7936_2827f110f2be"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_IndexRelatedRiskMember"
      id="t_31_753034fc_f9a5_1c4d_05a6_7564b332f8dd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Because the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider is relatively new to the creation of indexes, these risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be greater with respect to the Underlying Index than in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;case of an index maintained by a long-standing index provider. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Unusual market conditions or other unforeseen circumstances &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(such as natural disasters, political unrest or war) may impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider or a third-party data provider and could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider to postpone a scheduled rebalance. This could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the Underlying Index to vary from its normal or expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_AssetClassRiskMember"
      id="t_32_affe9e4f_ebb6_cbc8_f1b6_08b32498148f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_33_74179fc4_50e3_c796_9db2_084429916eb9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_ConcentrationRiskMember"
      id="t_34_505718c1_77a7_66ca_2508_83dba301b3be"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_CybersecurityRiskMember"
      id="t_35_75e20918_8c44_0c10_4dbf_9eea03d2f7bb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_DerivativesRisksMember"
      id="t_36_5a4c7b77_6427_9fda_2313_81c8a995e9fd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s use of derivatives (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., futures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forwards, swaps, options) may be riskier than other types of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments and may not have the intended effect on the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. Derivatives can be sensitive to changes in economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and market conditions, and they may increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility. The Fund also may experience reduced returns as a &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of transaction costs and losses on derivatives positions. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is the risk of imperfect correlation between the value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative and that of the asset underlying the derivative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives may create investment leverage, which could result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;losses that significantly exceed the Fund&#x2019;s original investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives are subject to the risk of mispricing or improper &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation, particularly if there is not a liquid secondary market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the instrument. Certain derivatives are subject to counterparty &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk, which is the risk that the other party in the transaction will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not fulfill its contractual obligations. The use of derivatives also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposes the Fund to additional operational and legal risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_DistributionTaxRiskMember"
      id="t_37_f03779c3_963c_30ee_ca6d_e0aece7c5d25"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Distribution Tax Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund currently expects to make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions on a regular basis. While the Fund will normally pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;its income as distributions, the Fund's distributions may exceed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's income and gains for the Fund's taxable year. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be required to reduce its distributions if it has insufficient &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income. Distributions in excess of the Fund's current and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;accumulated earnings and profits will be treated as a return of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital. Distributions in excess of the Fund's minimum distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, but not in excess of the Fund's earnings and profits, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be taxable to Fund shareholders and will not constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nontaxable returns of capital. A return of capital distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally will not be taxable but will reduce the shareholder's cost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis and will result in a higher capital gain or lower capital loss &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when those Fund shares on which the distribution was received &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are sold. Once a Fund shareholder's cost basis is reduced to zero, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;further distributions will be treated as capital gain, if the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholder holds shares of the Fund as capital assets. Because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's distributions may consist of return of capital, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may not be an appropriate investment for investors who do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;want their principal investment in the Fund to decrease over time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or who do not wish to receive return of capital in a given period.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_IncomeRiskMember"
      id="t_38_2dde8e4f_bee4_6deb_24ea_6b66fa82799c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline when yields fall or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;written option premiums decline. This decline can occur because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund may subsequently invest in lower-yielding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds as bonds in its portfolio mature, are near maturity or are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;called, bonds in the Underlying Fund's index are substituted, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund otherwise needs to purchase additional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds. Option premiums may fall due to changes in market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_InvestmentInUnderlyingFundRiskMember"
      id="t_39_b36e686c_fa8d_1143_d1d7_d86003ae132f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, so the Fund&#x2019;s investment performance and risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are likely to be directly related to those of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s NAV will change with changes in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund and other assets that the Fund holds. The shares &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund may trade at a premium or discount to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly bear &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the expenses charged by the Underlying Fund, and an investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Fund may entail more expenses than a direct investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_IssuerRiskMember"
      id="t_40_b056b6cf_fdfa_f317_cb0b_0f976785110f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_41_5b1abbf1_cbd8_b77d_8e55_c508ec2d24fc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_ManagementRiskMember"
      id="t_42_812d549a_4abb_19e0_860a_f6c8ab27de83"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_MarketTradingRiskMember"
      id="t_43_ed1b9136_fb49_1321_845b_f78dc57c3694"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_OperationalRiskMember"
      id="t_44_a6560548_309f_f8b4_c9f5_6e39c6d8ff36"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_RiskOfInvestingInTheUSMember"
      id="t_45_6cd5af13_9c2a_71b1_5c22_d137182a0ffb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_TaxRiskMember"
      id="t_46_3b100487_e598_e906_e0a9_c65b4ba2ef4d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The tax rules and limitations that apply to the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause some or all of its income and gain to be taxable as ordinary &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 9.50pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income or at ordinary income rates, may accelerate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of income and gain, and may defer its use of losses, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;all of which are expected to have negative tax consequences for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and Fund investors. Because the assets comprising the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and held by the Underlying Fund will not consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of stock, ordinary dividends from the Fund will not be eligible for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the reduced rates applicable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified dividend income&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for the dividends-received deduction. The Fund expects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that its ownership of shares of the Underlying Fund and sale of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call options thereon generally will constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;straddles&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 9.50pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(offsetting positions with respect to personal property) under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;section 1092 of the Internal Revenue Code (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The straddle &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rules generally do not apply if all the straddle&#x2019;s offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions consist of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call options&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and the stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to be purchased under the options, and the straddle is not part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a larger straddle. Unlike certain other funds that utilize covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call strategies, the Fund does not anticipate that this exception &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be available because, as a general matter, the call options it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;writes are not expected to be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The straddle rules usually will terminate the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holding periods for its shares of the Underlying Fund that become &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;part of a straddle before the long-term capital gain holding period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(more than one year) has been reached, which is expected to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eliminate the Fund&#x2019;s ability to recognize long-term capital gains &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a sale or other disposition of such shares. The straddle rules &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also usually will defer recognition of realized losses and require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the capitalization of certain interest expenses and carrying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;charges. Similarly, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wash sale&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; rules may apply to defer the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of loss by the Fund from the disposition of stock or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities at a loss in a case in which identical or substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;identical stock or securities (or an option to acquire such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property) is or has been acquired within a prescribed period. As a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of the foregoing, an investor may be subject to significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater amounts of tax as a result of the investment than would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;apply to an investment in a fund engaged in a different investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076777Member_TrackingErrorRiskMember"
      id="t_47_cf0fb0ea_4e80_ec9e_7d6c_2c9839cc51dc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 9.50pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. To the extent that the Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;achieve its investment objective through investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, the Fund may experience increased tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error as compared to investing directly in the securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets included in the underlying index of the Underlying Fund.&#160;A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund that tracks an index with exposure to swaps, options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures and/or other derivatives may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000076777Member"
      id="t_9_08bf1c70_0656_4484_a8f4_bbd70fa314e7"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000076777Member"
      id="t_48_9ab49b1d_2edc_94e4_e0a4_35437da6f7c7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000076777Member"
      id="t_49_b6e85b40_b56c_a1ff_c697_a37a833cb0a4">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000076777Member"
      id="t_50_befcd254_00da_e59d_cad4_5c630a06970e">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000076777Member"
      id="t_60_8f5dafcb_189e_8632_3074_9daafb92aa53">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000076777Member"
      id="t_59_a6c924be_98c9_4fe1_4bff_d0ef5c036bc7">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000076777Member"
      id="t_51_1595aeee_fff3_c81d_493f_106ab6845409"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000076777Member"
      id="t_52_2e43e0a8_19b5_a973_30ef_a3391d728e43"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.7pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 7.76pt;"&gt;9.11%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.7pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-10.84%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000076777Member_C000236812Member"
      id="h_14_cc2c428a_826c_4dbd_938b_034bf6dc996f">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_15_3f651b38_b95c_46b5_bb14_88660d557a6c"
      unitRef="pure">0.0911</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000076777Member_C000236812Member"
      id="h_16_e570023b_7a50_444a_8255_233645d61f6f">2023-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000076777Member_C000236812Member"
      id="h_17_8667c3c6_784b_435d_a4d7_2c528635a804">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_18_bff4d783_4bc4_4317_82a2_f49e02227e56"
      unitRef="pure">-0.1084</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000076777Member_C000236812Member"
      id="h_19_8f5d2d41_6762_41c9_a151_00ae662610fe">2023-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000076777Member"
      id="t_11_73c51d3e_e7bb_4dae_9f1a_d3d1991a4b9d">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000076777Member_C000236812Member"
      id="t_53_e3f029ac_34dc_06e3_fd3b_5c7d5c82b65f">2022-08-18</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_20_fc901f11_f64d_4449_a0ce_e9dc59d5eb46"
      unitRef="pure">-0.0212</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076777Member_C000236812Member"
      decimals="4"
      id="h_21_e51c1764_3fdb_4c01_9c76_50891f79c904"
      unitRef="pure">-0.0597</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076777Member_C000236812Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_22_dd9aed79_32fa_40ad_8af0_3e80868cd02c"
      unitRef="pure">-0.0266</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076777Member_C000236812Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_23_adbbcaf7_6343_4fa5_b4fc_96da1420ba76"
      unitRef="pure">-0.0998</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076777Member_C000236812Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_24_86765396_f98b_4bd9_bcaf_3835c671dde9"
      unitRef="pure">-0.0125</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076777Member_C000236812Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_25_3df1d14a_5b11_4d00_90c4_f6250a3937f8"
      unitRef="pure">-0.0601</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076777Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_26_4e1f3a5a_a98d_4ab3_b2c4_c5de9e78545d"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076777Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_27_fa048ecc_3ee0_47c2_9315_9bb33eaa313e"
      unitRef="pure">0.0105</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076777Member_CboeTLT2OTMBuyWriteIndexMember"
      decimals="4"
      id="h_28_61c79b1c_152b_4b38_aa34_cf0ff1c73e21"
      unitRef="pure">-0.0112</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076777Member_CboeTLT2OTMBuyWriteIndexMember"
      decimals="4"
      id="h_29_2c8bef8d_c6d1_486d_b51f_57ef8f3e092e"
      unitRef="pure">-0.0519</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000076777Member"
      id="t_61_32c74dc4_c6ea_26e8_9c75_d7e6ce8a8876">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000076777Member"
      id="t_54_487976bd_94f5_e740_7a05_b0b54ab2cacd">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000076777Member"
      id="t_55_149c9252_4a35_6901_d5ae_e979702fd146">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000076777Member"
      id="t_56_e8d85572_6208_7d66_c508_9c1ef6ff239f">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000076779Member"
      id="t_49_a4a53552_a3bd_1257_b35a_e40d1dbd9553"> iSHARES&#xae; HIGH YIELD CORPORATE BOND BUYWRITE STRATEGY ETF  Ticker: HYGWStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000076779Member"
      id="t_12_027264f8_e98a_445b_bde4_1ac6b91fddf5">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000076779Member"
      id="t_13_09dd32d2_ef3e_4af8_8650_211e368c821e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares High Yield Corporate Bond BuyWrite Strategy ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index that reflects a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy of holding the iShares iBoxx $ High Yield Corporate Bond ETF while writing (selling) one-month call options to generate income.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000076779Member"
      id="t_14_ab9a1a9b_3d4b_41ab_a3dd_168a2fd6a1ca">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000076779Member"
      id="t_15_9e2a72c2_cadc_475e_91e6_41186f4c9704"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000076779Member"
      id="t_50_df687cae_eaba_efd1_55cc_a3149ee28b6c">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000076779Member"
      id="t_101_d9362133_3856_9273_eec8_f58da8b5d3d7">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_30_5e851096_b65d_4033_aab2_6fffaf670ba7"
      unitRef="pure">0.0020</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_31_c3417d67_71e1_4d91_80de_68cf516f887a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_32_b236de3a_4f7f_4c33_bb8d_e45c16ea80e0"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_33_c0c1f84b_78e2_495a_892b_d76bc7ffc2c0"
      unitRef="pure">0.0049</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_34_772df04b_cc84_46f1_a456_72737bb0eb46"
      unitRef="pure">0.0069</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000076779Member"
      id="t_51_59142f52_1f34_d740_9752_488e45713f94">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000076779Member"
      id="t_52_5e476536_80c0_deb4_2760_b3a68b87c503"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000076779Member_C000236814Member"
      decimals="INF"
      id="h_35_00096434_dbeb_426d_a6ff_717c4070de4f"
      unitRef="USD">70</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000076779Member_C000236814Member"
      decimals="INF"
      id="h_36_3f19737c_e86a_47e0_b23e_100ee8fbe2ee"
      unitRef="USD">221</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000076779Member_C000236814Member"
      decimals="INF"
      id="h_37_ec4df9e3_91a0_4935_9ba9_36505dadf1ca"
      unitRef="USD">384</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000076779Member_C000236814Member"
      decimals="INF"
      id="h_38_132b9494_b07b_449a_8a58_f1202433c822"
      unitRef="USD">859</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000076779Member"
      id="t_53_e55bede8_f306_a849_3bf9_c5447e733929">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000076779Member"
      id="t_54_e75f3a2c_ae9f_bba0_9561_3bffca246aab">The Fund or the iShares iBoxx $ High Yield Corporate Bond ETF (&#x201c;HYG&#x201d; or the &#x201c;Underlying Fund&#x201d;) may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate for the Fund or the Underlying Fund may indicate higher transaction costs and may cause the Fund or the Underlying Fund to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to the Underlying Fund included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio. To the extent the Underlying Fund incurs costs from high portfolio turnover, such costs may have a negative effect on the performance of the Fund.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000076779Member"
      decimals="4"
      id="h_39_fdad59d9_9042_4aa3_aed7_03e4b7139c6c"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000076779Member"
      id="t_17_e9548e7c_1251_40cb_91b6_94d83595913e"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000076779Member"
      id="t_18_08f1586b_f655_4632_838d_faab9f149710"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Cboe HYG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BuyWrite Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is provided by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Cboe Global Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Cboe&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to measure the performance of a strategy of holding the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund while writing (selling) one-month call options on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund to generate income. A strategy of holding a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;stock or basket of stocks and selling call options that reference &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the stock or basket of stocks is commonly known as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;buy-write&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; strategy.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund seeks to track the investment results of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit iBoxx &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; USD Liquid High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's underlying index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; high yield (as determined by Markit Indices Limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds for sale in the U.S. The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's underlying Iidex is designed to provide a broad &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representation of the U.S. dollar-denominated liquid high yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate bond market, as summarized below.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index utilizes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;European-style&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; call options. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call option in the Underlying Index has a strike price closest to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;100% of the closing value of the Underlying Fund one day prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;roll date. The roll date is the day that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;closes out open call option positions by purchasing the offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call option positions and subsequently writes new call options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that will expire the following month.&#160;&#160;The roll date is the business &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;day preceding the expiration date of the options in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. The Fund will write options that trade on national securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges. Unlike American-style options, European-style options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can only be exercised on the expiration date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will seek to write call options up to (but not exceeding) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the full amount of shares of the Underlying Fund held in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the short position in the call option is offset, or &#x201c;covered,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the long position the Fund holds in shares of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund). In certain circumstances, the Fund may not write any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options, primarily if the option is far &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;out of the money&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strike price exceeds the price of the Underlying Fund) and would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generate minimal premium income. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By writing a call option, the Fund receives a premium and gives &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchaser of the option the right to purchase shares of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund at the strike price of the option at expiration. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the Fund does not expect to physically settle &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding option positions as it will generally purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;offsetting call options on the roll date as necessary to close out &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the open call position(s). By writing the call option(s), the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will not participate in market gains of the Underlying Fund above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the strike price but will fully participate in any market losses if the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund declines in value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may write options on different dates than the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index's roll date and may use strike prices, contract sizes, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity dates that are different than those for the options used in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. In addition, the Fund may write options that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are not on the Underlying Fund but that have investment and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics, in the aggregate, similar to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options used in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, a significant portion of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is indirectly represented through its holdings in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund by securities of companies in the consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services industry or sector.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund's underlying index is a modified market-value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted index with a 3% cap on each issuer. It is a subset of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit iBoxx USD Corporate Bond Index. Eligible components of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund's underlying index consist of U.S. dollar-denominated&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; high yield corporate bonds that: (i) are issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies domiciled in countries classified as developed markets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Markit; (ii) have an average rating of sub-investment grade &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(ratings from Fitch Ratings, Inc., Moody's Investors Service, Inc. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or Standard &amp;amp; Poor's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a subsidiary of S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are considered; if more than one agency provides a rating, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;average rating is attached to the bond); (iii) are from issuers with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at least $1 billion outstanding face value; (iv) have at least $400 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;million of outstanding face value; (v) have an original maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date of less than 15 years; (vi) have at least one year to maturity; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and (vii) have at least one year and 6 months to maturity for new &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index constituents.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments selected are expected to have, in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate, investment characteristics (based on factors such as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market value and industry weightings), fundamental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (such as return variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security's price sensitivity to a change in interest rates), maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or credit ratings and yield) and liquidity measures similar to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of an applicable underlying index. The Fund&#160;and the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund may not hold all of the securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or other instruments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and may hold certain securities or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments that are not included in the applicable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Cboe and is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and BFA. The Index Provider determines the composition &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and relative weightings of the securities in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities) and repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered to be issued by members of any industry.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000076779Member"
      id="t_55_03a34a36_d1eb_f1d7_3c2f_e8639307ec54">Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.</rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000076779Member"
      id="t_19_031f93c2_80f9_4af0_bf17_c1c3e1f25644"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000076779Member_RiskLoseMoneyMember"
      id="t_56_ead6dbbd_180b_e1fc_1e87_b179a93df80a">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_CoveredCallOptionRiskMember"
      id="t_70_4d0ef2c7_6e70_4c6c_f372_58d5fad63713">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Covered Call Option Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By writing covered call options in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return for the receipt of premiums, the Fund will give up the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;opportunity to benefit from potential increases in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund above the exercise prices of the written options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but will continue to bear the risk of declines in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund. The premiums received from the options may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not be sufficient to offset any losses sustained from the volatility &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund over time. In addition, the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell shares of the Underlying Fund will be limited while the option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is in effect unless the Fund extinguishes the option position &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the purchase of an offsetting identical option prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expiration of the written option.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The covered call strategy may be subject to imperfect matching or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price correlation between the written options and the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could reduce the Fund&#x2019;s returns. Exchanges may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspend the trading of options (for example due to volatile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets or if trading in the Underlying Fund is halted). If trading is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, the Fund may be unable to write or purchase options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at times that may be desirable or advantageous to the Fund to do &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;so. If the Fund is unable to extinguish the option position before &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exercise, the Fund may be required to deliver the corresponding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of the Underlying Fund, resulting in increased transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs, tracking error, underinvestment, and potentially the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;realization of capital gains. Further, this could lead to re-purchasing&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; shares of the Underlying Fund or selling the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corresponding options at a less favorable price than the fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;might have received had the options been extinguished. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;uses options which are struck once per month, and the timing of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the price of the Underlying Fund may affect the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. For example, if the Underlying Fund experiences a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;drop in price followed by a quick rebound, the Fund may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unable to fully participate in the rebound if the rebound occurs &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;immediately after the Fund&#x2019;s roll date. In addition, if trading is &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, the Fund may be unable to purchase an offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option for purposes of closing out an existing written option at the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally scheduled time and date.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will be affected by movements in interest rates and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond yields and the resulting share price of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In a falling interest rate environment and other environments in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which credit spreads narrow, the Underlying Fund is generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to appreciate in price, and the Fund may underperform &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund as price appreciation for the Fund is limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the exercise prices of the options written by the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_HighYieldSecuritiesRiskMember"
      id="t_71_d304d61a_4086_187d_f977_11fd24214b89">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_CreditRisksMember"
      id="t_72_478dc64a_b93d_4655_d784_8038cafe5cf3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or Underlying Fund's investment in that issuer. The degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit risk depends on an issuer's or counterparty's financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;condition and on the terms of an obligation.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_MarketRiskMember"
      id="t_73_b73bda11_8433_9fd5_7345_822340549443">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_IndexRelatedRiskMember"
      id="t_74_5c512a58_ec38_837a_e8c7_9669520250f7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Because the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider is relatively new to the creation of indexes, these risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be greater with respect to the Underlying Index than in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;case of an index maintained by a long-standing index provider. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Unusual market conditions or other unforeseen circumstances &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(such as natural disasters, political unrest or war) may impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider or a third-party data provider and could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider to postpone a scheduled rebalance. This could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the Underlying Index to vary from its normal or expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_AssetClassRiskMember"
      id="t_75_e3479e5f_8ca8_bbfe_16d4_1aa60d4776d2">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000076779Member_AssetsUnderManagementAUMRiskMember"
      id="t_76_04238919_2058_c8b5_d53d_9c5315518b43">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000076779Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_77_74933941_a22a_3a7a_12f3_f1d5e75cc30c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000076779Member_CallRiskMember"
      id="t_78_0062f5c0_023b_20ca_b0d7_eeee1c0aba13">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Underlying Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security before its stated maturity, and the Underlying Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have to reinvest the proceeds in securities with lower yields, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which would result in a decline in the Fund's or Underlying Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, or in securities with greater risks or with other less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;favorable features.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000076779Member_ConcentrationRiskMember"
      id="t_79_8873f8b0_7867_0d07_d11d_40d7861082ed">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000076779Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_80_c707a47c_4540_297c_6645_985ae99e2ccf">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_CurrencyRiskMember"
      id="t_81_7e79e99e_cfde_c5ab_4638_86704369639a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_CybersecurityRiskMember"
      id="t_82_a9892500_db79_9219_06b1_adaecb2e0421">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_DerivativesRisksMember"
      id="t_83_ee0e5ed0_1ec1_a6e0_f691_480ac16d60d5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s use of derivatives (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., futures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forwards, swaps, options) may be riskier than other types of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments and may not have the intended effect on the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. Derivatives can be sensitive to changes in economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and market conditions, and they may increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility. The Fund also may experience reduced returns as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of transaction costs and losses on derivatives positions. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is the risk of imperfect correlation between the value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative and that of the asset underlying the derivative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives may create investment leverage, which could result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;losses that significantly exceed the Fund&#x2019;s original investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives are subject to the risk of mispricing or improper &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation, particularly if there is not a liquid secondary market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the instrument. Certain derivatives are subject to counterparty &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk, which is the risk that the other party in the transaction will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not fulfill its contractual obligations. The use of derivatives also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposes the Fund to additional operational and legal risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_DistributionTaxRiskMember"
      id="t_84_aafa0871_9b3d_8aac_4e61_8007ae143a89">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Distribution Tax Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund currently expects to make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions on a regular basis. While the Fund will normally pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;its income as distributions, the Fund's distributions may exceed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's income and gains for the Fund's taxable year. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be required to reduce its distributions if it has insufficient &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income. Distributions in excess of the Fund's current and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;accumulated earnings and profits will be treated as a return of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital. Distributions in excess of the Fund's minimum distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, but not in excess of the Fund's earnings and profits, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be taxable to Fund shareholders and will not constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nontaxable returns of capital. A return of capital distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally will not be taxable but will reduce the shareholder's cost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis and will result in a higher capital gain or lower capital loss &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when those Fund shares on which the distribution was received &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are sold. Once a Fund shareholder's cost basis is reduced to zero, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;further distributions will be treated as capital gain, if the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholder holds shares of the Fund as capital assets. Because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's distributions may consist of return of capital, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may not be an appropriate investment for investors who do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;want their principal investment in the Fund to decrease over time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or who do not wish to receive return of capital in a given period.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_IncomeRiskMember"
      id="t_85_162abfc3_dd98_fadd_7f86_8fe551cabbf8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline when yields fall or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;written option premiums decline. This decline can occur because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund may subsequently invest in lower-yielding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds as bonds in its portfolio mature, are near maturity or are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;called, bonds in the Underlying Fund's index are substituted, or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund otherwise needs to purchase additional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds. Option premiums may fall due to changes in market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_InterestRateRisksMember"
      id="t_86_156e4f8b_c574_8ab9_e047_d13a7e79da5e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_InvestmentInUnderlyingFundRiskMember"
      id="t_87_8c329b83_33bb_efbf_53f3_541f4bfef8aa">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, so the Fund&#x2019;s investment performance and risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are likely to be directly related to those of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s NAV will change with changes in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund and other assets that the Fund holds. The shares &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund may trade at a premium or discount to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly bear &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the expenses charged by the Underlying Fund, and an investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Fund may entail more expenses than a direct investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_IssuerRiskMember"
      id="t_88_ca4e5729_8d00_8097_7671_6661c9a498dc">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_89_eea800c1_03b1_b542_f15c_a4b74a72d7fb">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_ManagementRiskMember"
      id="t_90_db6a6d0c_aae1_d867_480a_c1322d52e861">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_MarketTradingRiskMember"
      id="t_91_c99f3235_bfbb_3707_298b_65e9ed9f89af">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_NationalClosedMarketTradingRiskMember"
      id="t_92_19c289da_efe0_fc33_022c_4a77acfd2261">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_NonUSSecuritiesRiskMember"
      id="t_93_8d7ac5a5_9b1a_5c6c_d321_5710af6d2dbd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_OperationalRiskMember"
      id="t_94_e93c080b_2192_35c4_8dd5_30923f6951b5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_95_98a5a2e3_32b0_ee41_6ea2_73110479952f">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_RiskOfInvestingInDevelopedCountriesMember"
      id="t_96_b3f2a172_dd34_8513_d7bc_270d74b42d42">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Developed Countries&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund's investment in developed country issuers will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to legal, regulatory, political, currency, security, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic and other risks associated with developed countries. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Developed countries tend to represent a significant portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;global economy and have generally experienced slower economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;growth than some less developed countries. Certain developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries have experienced security concerns, such as war, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terrorism and strained international relations. Incidents involving &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a country&#x2019;s or region&#x2019;s security may cause uncertainty in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and may adversely affect its economy and the Fund&#x2019;s or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund's investments. In addition, developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries may be adversely impacted by changes to the economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions of certain key trading partners, regulatory burdens, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt burdens and the price or availability of certain commodities.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_RiskOfInvestingInTheUSMember"
      id="t_97_a16d725d_075d_72f7_cd4a_5b2480e94ed0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_TaxRiskMember"
      id="t_98_215565eb_7745_c63f_928e_3b1bbd557536">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The tax rules and limitations that apply to the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause some or all of its income and gain to be taxable as ordinary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income or at ordinary income rates, may accelerate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of income and gain, and may defer its use of losses, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;all of which are expected to have negative tax consequences for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and Fund investors. Because the assets comprising the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and held by the Underlying Fund will not consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of stock, ordinary dividends from the Fund will not be eligible for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the reduced rates applicable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified dividend income&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for the dividends-received deduction. The Fund expects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that its ownership of shares of the Underlying Fund and sale of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call options thereon generally will constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;straddles&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(offsetting positions with respect to personal property) under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;section 1092 of the Internal Revenue Code (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The straddle &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rules generally do not apply if all the straddle&#x2019;s offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions consist of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call options&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and the stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to be purchased under the options, and the straddle is not part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a larger straddle. Unlike certain other funds that utilize covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call strategies, the Fund does not anticipate that this exception &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be available because, as a general matter, the call options it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;writes are not expected to be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The straddle rules usually will terminate the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holding periods for its shares of the Underlying Fund that become &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;part of a straddle before the long-term capital gain holding period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(more than one year) has been reached, which is expected to &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eliminate the Fund&#x2019;s ability to recognize long-term capital gains &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a sale or other disposition of such shares. The straddle rules &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also usually will defer recognition of realized losses and require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the capitalization of certain interest expenses and carrying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;charges. Similarly, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wash sale&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; rules may apply to defer the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of loss by the Fund from the disposition of stock or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities at a loss in a case in which identical or substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;identical stock or securities (or an option to acquire such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property) is or has been acquired within a prescribed period. As a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of the foregoing, an investor may be subject to significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater amounts of tax as a result of the investment than would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;apply to an investment in a fund engaged in a different investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_TrackingErrorRiskMember"
      id="t_99_22069b53_4ef5_3a55_5ff0_519c580e37a8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. To the extent that the Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;achieve its investment objective through investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, the Fund may experience increased tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error as compared to investing directly in the securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets included in the underlying index of the Underlying Fund.&#160;A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund that tracks an index with exposure to swaps, options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures and/or other derivatives may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076779Member_ValuationRiskMember"
      id="t_100_d9e9dc51_9a3f_34f2_c4e7_a27709fb0c61">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000076779Member"
      id="t_20_c676ff15_ad2a_4e64_b76d_364073a8012b"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000076779Member"
      id="t_59_1d490874_5652_2199_378d_89b536c5e8e9">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000076779Member"
      id="t_64_3cb41f0f_ec9b_c5f0_b4b8_81ff33eef40e">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000076779Member"
      id="t_61_3b13faff_81d3_425d_fc95_d7cc594ef105">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000076779Member"
      id="t_58_3b44beb7_537a_980b_4a04_07c7d6e8b7b9">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000076779Member"
      id="t_57_cf6c1d32_6ad3_d5b9_2bd5_ad75092759a4">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000076779Member"
      id="t_62_82c7f7ed_af67_9341_6d5d_82d557b4222a">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000076779Member"
      id="t_63_8a9d710c_4251_7413_0865_895d858eeb31">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;3.94%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-0.26%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000076779Member_C000236814Member"
      id="h_43_e77fc1af_0a3f_4a68_a1fa_51a63304d995">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_44_aa8fcac1_937e_4dc4_ba5a_fbcdea98d96b"
      unitRef="pure">0.0394</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000076779Member_C000236814Member"
      id="h_45_3369b3ca_25f6_4759_a689_cd362683af94">2023-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000076779Member_C000236814Member"
      id="h_46_a85b8062_ee0f_4418_bb96_ffb8f20f9e26">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_47_b2ad0726_0878_437f_85f9_0224b56716ad"
      unitRef="pure">-0.0026</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000076779Member_C000236814Member"
      id="h_48_2ec05622_97c6_45cd_a8c0_b99827369afb">2023-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000076779Member"
      id="t_22_7c236a35_8218_47e3_8a47_3cdb0873defb">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000076779Member_C000236814Member"
      id="t_65_5ba3f646_959a_a57b_1aa3_369760275626">2022-08-18</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_49_0d6c6170_875b_41b2_b96f_aa5dccb62c5b"
      unitRef="pure">0.0710</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076779Member_C000236814Member"
      decimals="4"
      id="h_50_3a1fe0b7_ddfe_43f1_8d5f_c47788af139d"
      unitRef="pure">0.0533</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076779Member_C000236814Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_51_637e5e7f_e747_473d_b115_254b9df377b8"
      unitRef="pure">0.0493</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076779Member_C000236814Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_52_5a5c1a9d_f3d5_46c9_808a_b197bcd11e61"
      unitRef="pure">0.0163</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076779Member_C000236814Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_53_2c43e59d_2ddd_4b40_89cc_ab8f10033bce"
      unitRef="pure">0.0417</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076779Member_C000236814Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_54_58dc5844_8723_4970_91ff_993ff6d52cc5"
      unitRef="pure">0.0243</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076779Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_55_4db17d60_9110_438e_873f_5d3cfeb02747"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076779Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_56_ce7289a4_b5f0_4c95_8b3a_da89c36c2599"
      unitRef="pure">0.0171</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076779Member_CboeHYGBuyWriteIndexMember"
      decimals="4"
      id="h_57_845af784_a7ec_49e6_aa24_1412e41805f4"
      unitRef="pure">0.0730</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076779Member_CboeHYGBuyWriteIndexMember"
      decimals="4"
      id="h_58_7ed15628_3011_42ad_bc1e_cdb39034b625"
      unitRef="pure">0.0570</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000076779Member"
      id="t_66_1b9f3e81_1bb8_27bd_f8c7_81ea93cf2ea8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000076779Member"
      id="t_67_c10a2ae7_c14c_ea4d_e4ba_74e3c639b005">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000076779Member"
      id="t_68_5b643ba8_3d45_01ea_1d3e_285f328e4f3f">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000076779Member"
      id="t_69_fb8adfd7_b631_d458_7208_9a9746f6dfe0">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000076781Member"
      id="t_78_1aac6886_8ad7_37a9_0669_70bce839b3a3"> iSHARES&#xae; INVESTMENT GRADE CORPORATE  BOND BUYWRITE STRATEGY ETF  Ticker: LQDWStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000076781Member"
      id="t_23_66f02d62_95df_48c7_ba4a_d722f9e0022f">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000076781Member"
      id="t_24_d3854a08_e8d1_4917_bbcc_c60748c1af69"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Investment Grade Corporate Bond BuyWrite Strategy ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflects a strategy of holding the iShares iBoxx $ Investment Grade Corporate Bond ETF while writing (selling) one-month call options to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generate income.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000076781Member"
      id="t_25_6c982be2_f928_43a0_8663_d3a8ed85828b">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000076781Member"
      id="t_26_d7b32411_a3b1_4e56_9d93_12eedbd2496a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000076781Member"
      id="t_81_b7875d36_bea0_7d38_a941_c17b7e8a3484">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000076781Member"
      id="t_127_bc3188c6_79fe_78f0_1f68_42cf43551f86">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_59_2e20af61_808b_46d3_a31e_ee37db5cf361"
      unitRef="pure">0.0020</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_60_0f37a921_e62a_4dbb_a8ea_cb13b29490ff"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_61_fb946aef_a188_4a6b_901d_ec6cadc19ae0"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_62_ccefa0ab_7ba5_4e37_9219_130d5949fe85"
      unitRef="pure">0.0014</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_63_8050f25c_712c_4c08_9fd5_c5cda64d960f"
      unitRef="pure">0.0034</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000076781Member"
      id="t_79_3f685663_92d0_b226_91dd_acdb34074497">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000076781Member"
      id="t_80_f8b68233_6387_2dfb_b696_3b8701d3beba">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000076781Member_C000236816Member"
      decimals="INF"
      id="h_64_381cf353_3731_4b20_9d19_b2011da4afca"
      unitRef="USD">35</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000076781Member_C000236816Member"
      decimals="INF"
      id="h_65_2c8e1081_9219_4935_a8b2_97706ab87b6a"
      unitRef="USD">109</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000076781Member_C000236816Member"
      decimals="INF"
      id="h_66_194dbae3_3c9c_4a0a_b939_0631d45f9f11"
      unitRef="USD">191</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000076781Member_C000236816Member"
      decimals="INF"
      id="h_67_9524fdfe_a201_4ea0_8f0d_a2250c0fe342"
      unitRef="USD">431</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000076781Member"
      id="t_82_b98f6682_7635_eb75_4220_c2c4e0f8be3b">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000076781Member"
      id="t_83_a897238e_2160_3f93_c07c_3e88b888d711">The Fund or the iShares iBoxx $ Investment Grade Corporate Bond ETF (&#x201c;LQD&#x201d; or the &#x201c;Underlying Fund&#x201d;) may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate for the Fund or the Underlying Fund may indicate higher transaction costs and may cause the Fund or the Underlying Fund to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to the Underlying Fund included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio. To the extent the Underlying Fund incurs costs from high portfolio turnover, such costs may have a negative effect on the performance of the Fund.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000076781Member"
      decimals="4"
      id="h_68_5cb258ad_2a40_479a_9771_11926f8172bf"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000076781Member"
      id="t_28_a123298b_39d3_42f2_a19b_572ff4984793"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000076781Member"
      id="t_84_99a04b11_fe81_8f1b_4507_1d61e1d7560b">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Cboe LQD &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BuyWrite Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is provided by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Cboe Global Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Cboe&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to measure the performance of a strategy of holding the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund while writing (selling) one-month call options on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund to generate income. A strategy of holding a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;stock or basket of stocks and selling call options that reference &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the stock or basket of stocks is commonly known as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;buy-write&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; strategy.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund seeks to track the investment results of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit iBoxx &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; USD Liquid Investment Grade Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund's underlying index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, investment-grade (as determined by Markit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indices Limited (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds for sale in the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund's underlying index is designed to provide a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;broad representation of the U.S. dollar-denominated liquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade corporate bond market, as summarized below.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index utilizes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;European-style&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; call options. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call option in the Underlying Index has a strike price closest to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;100% of the closing value of the Underlying Fund one day prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;roll date. The roll date is the day that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;closes out open call option positions by purchasing the offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call option positions and subsequently writes new call options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that will expire the following month.&#160;&#160;The roll date is the business &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;day preceding the expiration date of the options in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. The Fund will write options that trade on national securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges. Unlike American-style options, European-style options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can only be exercised on the expiration date.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will seek to write call options up to (but not exceeding) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the full amount of shares of the Underlying Fund held in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the short position in the call option is offset, or &#x201c;covered,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the long position the Fund holds in shares of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund). In certain circumstances, the Fund may not write any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options, primarily if the option is far &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;out of the money&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strike price exceeds the price of the Underlying Fund) and would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generate minimal premium income.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By writing a call option, the Fund receives a premium and gives &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchaser of the option the right to purchase shares of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund at the strike price of the option at expiration. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the Fund does not expect to physically settle &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding option positions as it will generally purchase &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;offsetting call options on the roll date as necessary to close out &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the open call position(s). By writing the call option(s), the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will not participate in market gains of the Underlying Fund above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the strike price but will fully participate in any market losses if the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund declines in value.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may write options on different dates than the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index's roll date and may use strike prices, contract sizes, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity dates that are different than those for the options used in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. In addition, the Fund may write options that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are not on the Underlying Fund but that have investment and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics, in the aggregate, similar to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options used in the Underlying Index.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#xb6;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant portion of the Underlying Index is indirectly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented through its holdings in the Underlying Fund by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of companies in the financials industry or sector.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund's underlying index is a modified market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value-weighted index with a 3% cap on each issuer. There is no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limit to the number of issues in the Underlying Fund's underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index. It is a subset of the Markit iBoxx USD Corporate Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. Eligible components of the Underlying Fund's underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index consist of U.S. dollar-denominated corporate bonds that: (i) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are issued by companies domiciled in countries classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets by Markit; (ii) have an average rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment grade (ratings from Fitch Ratings, Inc., Moody's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investors Service, Inc. or Standard &amp;amp; Poor's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global are considered; if more than one agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides a rating, the average rating is attached to the bond); (iii) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are from issuers with at least $2 billion outstanding face value; (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have at least $750 million of outstanding face value; (v) have at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least three years to maturity; and (vi) have at least three years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and 6 months to maturity for new index constituents.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments selected are expected to have, in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate, investment characteristics (based on factors such as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market value and industry weightings), fundamental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (such as return variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security's price sensitivity to a change in interest rates), maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or credit ratings and yield) and liquidity measures similar to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of an applicable underlying index. The Fund&#160;and the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund may not hold all of the securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or other instruments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and may hold certain securities or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments that are not included in the applicable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Cboe and is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and BFA. The Index Provider determines the composition &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and relative weightings of the securities in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities) and repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered to be issued by members of any industry.&lt;/span&gt;&lt;/div&gt;</rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000076781Member"
      id="t_128_d7aa25d0_023e_9ed2_950d_a2139f4b17ff">Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.</rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000076781Member"
      id="t_30_ae6a85f9_53dc_4c64_9f73_41a29f859f42"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000076781Member_RiskLoseMoneyMember"
      id="t_96_4d49ad82_c999_ad8b_2968_6e3659a5e5b9">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_CoveredCallOptionRiskMember"
      id="t_97_c7050837_f777_1fc8_e429_4950a9a254b2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Covered Call Option Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By writing covered call options in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return for the receipt of premiums, the Fund will give up the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;opportunity to benefit from potential increases in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund above the exercise prices of the written options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but will continue to bear the risk of declines in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund. The premiums received from the options may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not be sufficient to offset any losses sustained from the volatility &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund over time. In addition, the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell shares of the Underlying Fund will be limited while the option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is in effect unless the Fund extinguishes the option position &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the purchase of an offsetting identical option prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expiration of the written option.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The covered call strategy may be subject to imperfect matching or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price correlation between the written options and the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could reduce the Fund&#x2019;s returns. Exchanges may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspend the trading of options (for example due to volatile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets or if trading in the Underlying Fund is halted). If trading is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, the Fund may be unable to write or purchase options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at times that may be desirable or advantageous to the Fund to do &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;so. If the Fund is unable to extinguish the option position before &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exercise, the Fund may be required to deliver the corresponding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of the Underlying Fund, resulting in increased transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs, tracking error, underinvestment, and potentially the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;realization of capital gains. Further, this could lead to re-purchasing&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; shares of the Underlying Fund or selling the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corresponding options at a less favorable price than the fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;might have received had the options been extinguished. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;uses options which are struck once per month, and the timing of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the price of the Underlying Fund may affect the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. For example, if the Underlying Fund experiences a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;drop in price followed by a quick rebound, the Fund may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unable to fully participate in the rebound if the rebound occurs &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;immediately after the Fund&#x2019;s roll date. In addition, if trading is &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, the Fund may be unable to purchase an offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option for purposes of closing out an existing written option at the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally scheduled time and date.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will be affected by movements in interest rates and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond yields and the resulting share price of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In a falling interest rate environment and other environments in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which credit spreads narrow, the Underlying Fund is generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to appreciate in price, and the Fund may underperform &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund as price appreciation for the Fund is limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the exercise prices of the options written by the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_InterestRateRisksMember"
      id="t_98_5684a20a_eb4d_b9cb_1241_b54c0bcc03db">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_CreditRisksMember"
      id="t_99_542fe04e_0a23_ad79_918d_dedd1864d85b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or Underlying Fund's investment in that issuer. The degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit risk depends on an issuer's or counterparty's financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;condition and on the terms of an obligation.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_MarketRiskMember"
      id="t_100_a7501987_8c5a_7301_8f36_77073b6bd979">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_IndexRelatedRiskMember"
      id="t_101_0c85cb95_1107_c960_e35e_103b4613c36e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Because the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider is relatively new to the creation of indexes, these risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be greater with respect to the Underlying Index than in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;case of an index maintained by a long-standing index provider. &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Unusual market conditions or other unforeseen circumstances &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(such as natural disasters, political unrest or war) may impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider or a third-party data provider and could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider to postpone a scheduled rebalance. This could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the Underlying Index to vary from its normal or expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_AssetClassRiskMember"
      id="t_102_5a0ad1c0_1f49_1f87_61f7_cf5ab63b56ed">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_103_e8b65494_4ef6_6ff2_4c38_cd9b2b4a473f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_CallRiskMember"
      id="t_104_aae928f4_06bf_c7f6_1e12_c85ce1e2f9e0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Underlying Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security before its stated maturity, and the Underlying Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have to reinvest the proceeds in securities with lower yields, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which would result in a decline in the Fund's or Underlying Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, or in securities with greater risks or with other less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;favorable features.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_ConcentrationRiskMember"
      id="t_105_d7ff5db5_1300_64f8_c57c_fab8ae50b2dc">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_CybersecurityRiskMember"
      id="t_106_2102d379_f8fc_fded_04f6_d0f25aeb34d6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_DerivativesRisksMember"
      id="t_107_efa0f018_241f_6ec5_f4f4_b613c43a7271">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s use of derivatives (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., futures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forwards, swaps, options) may be riskier than other types of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments and may not have the intended effect on the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. Derivatives can be sensitive to changes in economic &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and market conditions, and they may increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility. The Fund also may experience reduced returns as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of transaction costs and losses on derivatives positions. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is the risk of imperfect correlation between the value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative and that of the asset underlying the derivative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives may create investment leverage, which could result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;losses that significantly exceed the Fund&#x2019;s original investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives are subject to the risk of mispricing or improper &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation, particularly if there is not a liquid secondary market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the instrument. Certain derivatives are subject to counterparty &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk, which is the risk that the other party in the transaction will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not fulfill its contractual obligations. The use of derivatives also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposes the Fund to additional operational and legal risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_DistributionTaxRiskMember"
      id="t_108_596be9e2_0500_08f2_a30b_8f99ae7dbcc3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Distribution Tax Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund currently expects to make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions on a regular basis. While the Fund will normally pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;its income as distributions, the Fund's distributions may exceed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's income and gains for the Fund's taxable year. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be required to reduce its distributions if it has insufficient &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income. Distributions in excess of the Fund's current and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;accumulated earnings and profits will be treated as a return of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital. Distributions in excess of the Fund's minimum distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, but not in excess of the Fund's earnings and profits, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be taxable to Fund shareholders and will not constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nontaxable returns of capital. A return of capital distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally will not be taxable but will reduce the shareholder's cost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis and will result in a higher capital gain or lower capital loss &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when those Fund shares on which the distribution was received &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are sold. Once a Fund shareholder's cost basis is reduced to zero, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;further distributions will be treated as capital gain, if the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholder holds shares of the Fund as capital assets. Because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's distributions may consist of return of capital, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may not be an appropriate investment for investors who do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;want their principal investment in the Fund to decrease over time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or who do not wish to receive return of capital in a given period.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_FinancialCompaniesRiskMember"
      id="t_109_3a298d4c_86f4_30eb_5ca3_b673cd2f7e87">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_IncomeRiskMember"
      id="t_110_21693544_83f0_0425_b5d5_75ed636dd35d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline when yields fall or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;written option premiums decline. This decline can occur because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund may subsequently invest in lower-yielding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds as bonds in its portfolio mature, are near maturity or are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;called, bonds in the Underlying Fund's index are substituted, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund otherwise needs to purchase additional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds. Option premiums may fall due to changes in market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_InvestmentInUnderlyingFundRiskMember"
      id="t_111_d1f443be_08d1_7254_a1fd_0d5ad5274662">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, so the Fund&#x2019;s investment performance and risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are likely to be directly related to those of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s NAV will change with changes in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund and other assets that the Fund holds. The shares &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund may trade at a premium or discount to the &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly bear &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the expenses charged by the Underlying Fund, and an investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Fund may entail more expenses than a direct investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_IssuerRiskMember"
      id="t_112_6867944c_ca5a_c933_77c1_1aef5fd34fee">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_113_760abe62_7425_92eb_f176_fcfc4a62e37b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_ManagementRiskMember"
      id="t_114_809bfbf6_5e52_629e_c8b2_4b428da8aec9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_MarketTradingRiskMember"
      id="t_115_52fbc87e_f58e_3279_45b7_ac043c25121d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_OperationalRiskMember"
      id="t_116_06b4eb91_f95f_c4a9_81c9_859f648796fb">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_RelianceOnTradingPartnersRiskMember"
      id="t_117_af175f57_9949_ccb0_6569_219d983df2b6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund or Underlying Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in countries or regions whose economies are heavily &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dependent upon trading with key partners. Any reduction in this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading may have an adverse impact on the Fund's or Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's investments.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_RiskOfInvestingInTheUSMember"
      id="t_118_9044b606_714a_cc8d_b369_dd308752a6b6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_TaxRiskMember"
      id="t_119_a82f5ea8_da98_93ea_37d4_4d8022453a2f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The tax rules and limitations that apply to the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause some or all of its income and gain to be taxable as ordinary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income or at ordinary income rates, may accelerate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of income and gain, and may defer its use of losses, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;all of which are expected to have negative tax consequences for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and Fund investors. Because the assets comprising the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and held by the Underlying Fund will not consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of stock, ordinary dividends from the Fund will not be eligible for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the reduced rates applicable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified dividend income&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for the dividends-received deduction. The Fund expects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that its ownership of shares of the Underlying Fund and sale of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call options thereon generally will constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;straddles&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(offsetting positions with respect to personal property) under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;section 1092 of the Internal Revenue Code (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The straddle &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rules generally do not apply if all the straddle&#x2019;s offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions consist of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call options&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and the stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to be purchased under the options, and the straddle is not part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a larger straddle. Unlike certain other funds that utilize covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call strategies, the Fund does not anticipate that this exception &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be available because, as a general matter, the call options it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;writes are not expected to be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The straddle rules usually will terminate the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holding periods for its shares of the Underlying Fund that become &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;part of a straddle before the long-term capital gain holding period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(more than one year) has been reached, which is expected to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eliminate the Fund&#x2019;s ability to recognize long-term capital gains &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a sale or other disposition of such shares. The straddle rules &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also usually will defer recognition of realized losses and require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the capitalization of certain interest expenses and carrying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;charges. Similarly, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wash sale&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; rules may apply to defer the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of loss by the Fund from the disposition of stock or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities at a loss in a case in which identical or substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;identical stock or securities (or an option to acquire such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property) is or has been acquired within a prescribed period. As a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of the foregoing, an investor may be subject to significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater amounts of tax as a result of the investment than would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;apply to an investment in a fund engaged in a different investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_TrackingErrorRiskMember"
      id="t_120_6f80c01d_c34d_19df_b683_af9984466c3d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. To the extent that the Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;achieve its investment objective through investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, the Fund may experience increased tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error as compared to investing directly in the securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets included in the underlying index of the Underlying Fund.&#160;A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund that tracks an index with exposure to swaps, options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures and/or other derivatives may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076781Member_ValuationRiskMember"
      id="t_121_a1e66c97_1338_55e4_c9a6_fa52726fca1d">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000076781Member"
      id="t_31_eb628d29_fb4c_4b76_b59c_18e43ec29e06"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000076781Member"
      id="t_85_9434a184_8ee4_a6eb_e087_93bc21b4e0e3">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000076781Member"
      id="t_95_05be7323_2c06_d367_74c5_95d950cb54d4">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000076781Member"
      id="t_86_d9d5c3b8_ccbf_1d1b_b221_b9395df0bee4">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000076781Member"
      id="t_87_4a02193f_13d2_7b41_c5c5_af05f65b8b9d">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000076781Member"
      id="t_88_c9ec8a81_fd71_f779_bbab_08e133c879f6">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000076781Member"
      id="t_89_df9efde3_4633_a50b_f0a9_983d653d4c0b">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000076781Member"
      id="t_90_9a5d8065_6af1_8a2d_8089_7f81b77c91de">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.38pt;"&gt;4.66%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-2.95%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000076781Member_C000236816Member"
      id="h_72_96f8e595_558e_4ae7_a640_e1423727c318">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_73_6aed5def_1a37_49b2_8540_a73126f81a5c"
      unitRef="pure">0.0466</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000076781Member_C000236816Member"
      id="h_74_2b6d2cb4_5f37_4074_a499_7ae4a4ac5803">2023-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000076781Member_C000236816Member"
      id="h_75_b3e14c52_c4d8_4b5d_a100_dd2b3b6f05ef">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_76_904aac61_9270_442d_be9c_ebcafdf93b2d"
      unitRef="pure">-0.0295</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000076781Member_C000236816Member"
      id="h_77_91ed0a1f_d83b_477d_af0d_706aa0e7b95d">2023-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000076781Member"
      id="t_33_142b8152_a9d8_4c86_8ff2_16944ccd67c4">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000076781Member_C000236816Member"
      id="t_122_d4b32896_e8b9_d163_7d9c_1c76719d9cd6">2022-08-18</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_78_3746cca5_6c50_4da4_adb9_ce2c4da0f814"
      unitRef="pure">0.0284</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076781Member_C000236816Member"
      decimals="4"
      id="h_79_2c037f98_8d7b_4af1_8a93_69ea2f240732"
      unitRef="pure">-0.0064</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076781Member_C000236816Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_80_e1a38d0f_7229_4e6b_b4b1_3bf5f4067c41"
      unitRef="pure">0.0227</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076781Member_C000236816Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_81_189f71e8_a222_4641_b00c_1a05bba3c5ed"
      unitRef="pure">-0.0419</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076781Member_C000236816Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_82_b209aada_79d1_4d87_a2b4_f1fcd83595d5"
      unitRef="pure">0.0168</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076781Member_C000236816Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_83_d36978c3_7e9e_4a37_95b9_e6d11a908087"
      unitRef="pure">-0.0198</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076781Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_84_14698703_082e_4539_a488_9c2ca4afeeab"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076781Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_85_ff8f1969_5185_460f_a164_94593e356ac5"
      unitRef="pure">0.0171</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076781Member_CboeLQDBuyWriteIndexMember"
      decimals="4"
      id="h_86_1c767778_3f62_432b_82b4_ba7559b6713a"
      unitRef="pure">0.0314</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076781Member_CboeLQDBuyWriteIndexMember"
      decimals="4"
      id="h_87_36e8bfdf_cea1_4bf3_90b4_e2f9956a3e02"
      unitRef="pure">-0.0022</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000076781Member"
      id="t_91_9a648e4c_890d_4e4e_bc7d_9ede25bb035e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000076781Member"
      id="t_92_a17d0231_9468_0544_0d6f_a3a4e4490ddc">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000076781Member"
      id="t_93_4906f67a_20dd_e0f4_5edc_d49532a927e8">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000076781Member"
      id="t_94_52801c0f_09a0_9859_9025_8cd88c3995fb">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000083814Member"
      id="t_44_a4e8fe8a_f79e_fbdd_4540_89ec27470933"> iSHARES&#xae; RUSSELL 2000 BUYWRITE ETF  Ticker: IWMWStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000083814Member"
      id="t_34_edf2ad2b_3907_4b8b_833c_71ce00f51449">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000083814Member"
      id="t_35_219a643f_1aca_4c2d_96e9_bdc31d188eb9"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Russell 2000 BuyWrite ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index that reflects a strategy of holding the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iShares Russell 2000 ETF while writing (selling) one-month call options to generate income.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000083814Member"
      id="t_36_3770774c_660e_4469_adae_dbbe7f05ada6">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000083814Member"
      id="t_37_34cbe626_4ef1_4dfa_b09c_2c5d9ddbfa3c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000083814Member"
      id="t_77_fd20045c_1bce_5765_012c_b3f0e71e086d">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000083814Member"
      id="t_79_2d20bbf6_3f27_c9fb_e94e_e197605dae62">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000083814Member_C000247831Member"
      decimals="4"
      id="h_88_bcf01ab7_9971_4557_8445_4b2031f37c5f"
      unitRef="pure">0.0020</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000083814Member_C000247831Member"
      decimals="4"
      id="h_89_8827b2f1_cbf0_4921_85cf_88ad1f1c6d10"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000083814Member_C000247831Member"
      decimals="4"
      id="h_90_0bd80928_7113_4d59_8d91_4bf7303f4be1"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000083814Member_C000247831Member"
      decimals="4"
      id="h_91_0a5cee03_4bd4_49a2_b477_faf8e23a6d16"
      unitRef="pure">0.0019</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000083814Member_C000247831Member"
      decimals="4"
      id="h_92_32e73a75_ef61_472a_a293_1e5324a26bf4"
      unitRef="pure">0.0039</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000083814Member"
      id="t_78_3c5bf046_28eb_e7a7_d62b_260b5ef70c13">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000083814Member"
      id="t_46_70761ec7_a738_46c1_9f34_cd04e760300e">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000083814Member_C000247831Member"
      decimals="INF"
      id="h_93_35433380_7e28_49d2_90ca_e2b867677dd4"
      unitRef="USD">40</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000083814Member_C000247831Member"
      decimals="INF"
      id="h_94_bd517f1e_a676_4a5c_b474_05a7a76c1db0"
      unitRef="USD">125</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000083814Member_C000247831Member"
      decimals="INF"
      id="h_95_532e508e_ae17_4502_aa28_a26c52e43fe4"
      unitRef="USD">219</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000083814Member_C000247831Member"
      decimals="INF"
      id="h_96_a1b1af01_c17e_471b_a083_52f16063a020"
      unitRef="USD">493</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000083814Member"
      id="t_47_1e56bcf6_ce47_8c8b_a8e4_eb44753ace80">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000083814Member"
      id="t_48_05a893bd_bcbb_44df_c6fa_670ff50dc5f9">The Fund or the Underlying Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate for the Fund or the Underlying Fund may indicate higher transaction costs and may cause the Fund or the Underlying Fund to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to the Underlying Fund included as part of acquired fund fees and expenses), affect the Fund&#x2019;s performance. From inception (March 14, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 3% of the average value of its portfolio. To the extent the Underlying Fund incurs costs from high portfolio turnover, such costs may have a negative effect on the performance of the Fund.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000083814Member"
      decimals="4"
      id="h_97_cd02f083_77b8_4b3a_b3cc_bfb6a5bfc505"
      unitRef="pure">0.03</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000083814Member"
      id="t_39_16701c4c_e70b_4bcb_8a53_97e4e08716c4"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000083814Member"
      id="t_40_dbe1f116_56e9_4588_8eca_b6c2274288d2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Cboe FTSE &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Russell IWM 2% OTM BuyWrite Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is designed to measure the performance of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy of holding the iShares Russell 2000 ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) while writing (selling) one-month call options primarily on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Russell 2000 Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) to generate income. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to achieve its investment objective by investing a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantial portion of its assets in the Underlying Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options on the Option Index. A strategy of holding a stock or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basket of stocks and selling call options that reference the stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or basket of stocks is commonly known as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;buy-write&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; strategy. The Underlying Index is a product of Cboe &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Indices, LLC or its affiliates (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CGI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and FTSE Russell or its affiliates (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Russell&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), the index provider for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund seeks to track the investment results of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index, which measures the performance of the small-capitalization&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; sector of the U.S. equity market, as defined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Russell. The Option Index is a float-adjusted capitalization-weighted&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; index of equity securities issued by the approximately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1,921 smallest issuers in the Russell 3000 Index. The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Option Index represent a broad range of industries. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index uses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;European-style&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; call options, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can be exercised only on their expiration date. The options trade &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on national securities exchanges. In writing a call option, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receives a premium, and the purchaser of the option has the right &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to buy the value of the Option Index at the option&#x2019;s strike price at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expiration. However, the Fund does not expect to settle the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding option positions; generally, it purchases offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call options on the roll date (as defined below) as necessary to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;close out the open call position(s). Although the Fund receives &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option premiums, it does not participate in any market gains of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund that exceed the equivalent strike price of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option on the Option Index. The Fund fully participates in any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declines in the value of the Underlying Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to write call options equal to the full notional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of shares of the Underlying Fund. In other words, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund aims for its short option position in the Option Index to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fully offset, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by the long position that the Fund holds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in shares of the Underlying Fund. At times, however, there may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a notional mismatch due to differences between the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and the Option Index with respect to pricing, tracking error, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends, and other factors. In addition, the Fund may opt not to &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;write any options in certain circumstances, primarily if the option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is far &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;out of the money&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the strike price exceeds the price of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Option Index) and would generate minimal premium income.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Each call option used in the Underlying Index has a strike price &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;closest to 102% of the closing value of the Option Index one day &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prior to the roll date. The roll date is the day that open call option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions are closed out by purchasing the offsetting call option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions and subsequently writing new call options that expire &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following month. The roll date is the business day preceding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the expiration date of the options in the Underlying Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is rebalanced monthly at the close of trading on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the roll date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;If, on the day prior to the roll date, the premium that an option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;writer would hypothetically receive on the new 102% call option is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than five basis points of the closing value of the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on that day, the Underlying Index will instead select the call option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with the strike price closest to 100% of the closing value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index. Selecting an option with a strike price closest to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;100% (rather than 102%) in these circumstances is designed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;avoid writing an option whose potential trading costs would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exceed the option&#x2019;s premium.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may write options on different dates than the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&#x2019;s roll date and may use strike prices, contract sizes, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity dates that are different than those for the options used in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. In addition, the Fund may write options that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are not on the Option Index but that have investment and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics, in the aggregate, similar to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options used in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund makes monthly distributions consisting of the option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;premium received and any dividends received from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, subject to a cap of 2% of the Fund&#x2019;s NAV per month. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is likely to distribute an amount greater than its earnings and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;profits, resulting in a return of capital.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, a significant portion of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is represented, through its holdings in the Underlying Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by securities of companies in the financials, healthcare and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industrials sectors.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments selected are expected to have, in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate, investment characteristics (based on factors such as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market value and industry weightings), fundamental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (such as return variability and yield) and liquidity &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures similar to those of an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#160;and the Underlying Fund may not hold all of the securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments in the applicable Underlying Index and may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain securities or other instruments that are not included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is provided by the Index Provider and Russell &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and other instruments in the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities) and repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered to be issued by members of any industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000083814Member"
      id="t_49_29b1bba9_c97e_8238_e213_66fcd61c3500"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000083814Member"
      id="t_41_1f52ea7c_f63f_4991_a718_14f0fc133f4b"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000083814Member_RiskLoseMoneyMember"
      id="t_50_fe36fea5_a927_002f_eda6_829016de18ba">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_CoveredCallOptionRiskMember"
      id="t_51_a8aa548f_427e_a0fc_ca4f_ed275acfff9b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Covered Call Option Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to tracks the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of the Underlying Index in part by writing covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call options on the Option Index in return for the receipt of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;premiums. In so doing, the Fund gives up the opportunity to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;benefit from potential increases in the value of the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above the exercise price of the options. The Fund also continues &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to bear the risk of declines in the value of the Underlying Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is closely correlated to the value of the Option Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;premiums received from the options may not be sufficient to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;offset any losses sustained from the volatility of the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the Underlying Fund over time. In addition, the Fund&#x2019;s ability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to sell shares of the Underlying Fund is limited while the option is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in effect unless the Fund extinguishes the option position through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchase of an offsetting identical option prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expiration of the written option.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The covered call strategy may be subject to imperfect matching or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price correlation between the written options on the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the Underlying Fund, which could reduce the Fund&#x2019;s returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Exchanges may suspend the trading of options (for example, due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to volatile markets or if trading in other index-related instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is halted). If trading is suspended, the Fund may be unable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;write or purchase options at times that may be desirable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advantageous to the Fund to do so. If the Fund is unable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extinguish the option position before exercise, the Fund may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;required to sell shares of the Underlying Fund, which may result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased transaction costs, tracking error, over- or under-investment,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and potentially the realization of capital gains. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Further, this could lead to selling the corresponding options at a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less favorable price than the Fund might have received had the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options been extinguished.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund uses options that are struck once per month, and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timing of changes in the price of the Underlying Fund and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index may affect the Fund&#x2019;s performance. For example, if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund or the Option Index experiences a drop in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price followed by a quick rebound, the Fund may be unable to fully &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;participate in the rebound if the rebound occurs immediately after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s roll date. In addition, if trading is suspended, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be unable to purchase an offsetting option for purposes of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;closing out an existing written option at the originally scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time and date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The options written by the Fund are not expected to be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as defined under FINRA Rule 2360, in part due to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nature of the underlier (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the Option Index). Instead, the Fund is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to post margin with a clearing broker to satisfy &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory margin requirements with respect to the written &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options. The Fund is subject to the risk that the clearing broker &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could default on its obligation to return the margin posted in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;connection with the options written by the Fund. In the event of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such a default, the Fund could experience lengthy delays in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recovering its assets or obtain no recovery at all, and the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an investment in Fund shares would likely decrease.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_RiskOfInvestingInTheUSMember"
      id="t_52_59c52186_3933_1028_bf84_ddf3c3068cac"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_SmallCapitalizationCompaniesRiskMember"
      id="t_53_3e9c9bba_6746_f07d_ac5d_d7e00718629b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small-Capitalization Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Compared to mid- and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;large-capitalization companies, small-capitalization companies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less stable and more susceptible to adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments. The securities of small-capitalization companies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more volatile and less liquid than those of mid- and large-capitalization&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; companies. As a result, the Fund&#x2019;s share price may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be more volatile than that of a fund with a greater investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;large- or mid-capitalization stocks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_MarketRiskMember"
      id="t_54_e4398f1b_8833_c77b_1ea0_0c6ae601536b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_IndexRelatedRiskMember"
      id="t_55_56369f84_80c3_ab19_bf2d_c2f3d329eba8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_AssetClassRiskMember"
      id="t_56_b5311373_6ac8_07b2_64ed_b801573fd57c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_AssetsUnderManagementAUMRiskMember"
      id="t_57_68df2e79_4779_38e6_97b9_da78cdccf0f2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_58_a662aa62_408d_53bc_bc95_d617db1db070"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_ConcentrationRiskMember"
      id="t_59_20005c74_bc3c_8c45_44f3_f05f4f4ea452"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_CybersecurityRiskMember"
      id="t_60_d9db8f56_92e9_225b_c8d3_9bf1bbff5bdb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_DerivativesRisksMember"
      id="t_61_55806b99_8973_8565_f06c_fc29160a9fda"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s use of derivatives (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., futures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forwards, swaps, options) may be riskier than other types of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments and may not have the intended effect on the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. Derivatives can be sensitive to changes in economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and market conditions, and they may increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility. The Fund also may experience reduced returns as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of transaction costs and losses on derivatives positions. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is the risk of imperfect correlation between the value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative and that of the asset underlying the derivative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives may create investment leverage, which could result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;losses that significantly exceed the Fund&#x2019;s original investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives are subject to the risk of mispricing or improper &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation, particularly if there is not a liquid secondary market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the instrument. Certain derivatives are subject to counterparty &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk, which is the risk that the other party in the transaction will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not fulfill its contractual obligations. The use of derivatives also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposes the Fund to additional operational and legal risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_DistributionTaxRiskMember"
      id="t_62_e1b1fb39_efb6_e90e_7df5_984a10a7a56c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Distribution Tax Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund currently expects to make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions on a regular basis. While the Fund will normally pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;its income as distributions, the Fund's distributions may exceed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's income and gains for the Fund's taxable year. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be required to reduce its distributions if it has insufficient &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income. Distributions in excess of the Fund's current and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;accumulated earnings and profits will be treated as a return of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital. Distributions in excess of the Fund's minimum distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, but not in excess of the Fund's earnings and profits, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be taxable to Fund shareholders and will not constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nontaxable returns of capital. A return of capital distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally will not be taxable but will reduce the shareholder's cost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis and will result in a higher capital gain or lower capital loss &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when those Fund shares on which the distribution was received &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are sold. Once a Fund shareholder's cost basis is reduced to zero, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;further distributions will be treated as capital gain, if the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholder holds shares of the Fund as capital assets. Because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's distributions may consist of return of capital, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may not be an appropriate investment for investors who do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;want their principal investment in the Fund to decrease over time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or who do not wish to receive return of capital in a given period.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_EquitySecuritiesRiskMember"
      id="t_63_d2912a72_0ebf_48cb_04c9_3e20631de8f4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Equity securities are subject to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in value, and their values may be more volatile than those of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes. The value of a security may decline for a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reasons that may directly relate to the issuer as well as due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;general industry or market conditions. Common stock is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subordinated to preferred securities and debt in a company&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital structure. Common stock has the lowest priority, and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greatest risk, with respect to dividends and any liquidation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments in the event of an issuer&#x2019;s bankruptcy.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_FinancialCompaniesRiskMember"
      id="t_64_6d8deb87_3d44_d35c_52ac_edfcf9185a95"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_HealthcareCompaniesRiskMember"
      id="t_65_44b1363a_4cc6_4c25_61e7_6886acf4794e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Healthcare Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The profitability of healthcare &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies may be adversely affected by extensive government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations, restrictions on government reimbursement for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;medical expenses, rising costs of medical products and services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pricing pressure, the protection and expiration of patents, limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;product lines, supply chain issues, labor shortages and product &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liability claims, among other factors.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_IndustrialCompaniesRiskMember"
      id="t_66_b6601219_49e3_66c6_6d70_61208cfa128a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000083814Member_InvestmentInUnderlyingFundRiskMember"
      id="t_67_ce904729_5b11_ad75_416c_99dcd615a336"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, so the Fund&#x2019;s investment performance and risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are likely to be directly related to those of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s NAV will change with changes in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund and other assets that the Fund holds. The shares &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund may trade at a premium or discount to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly bear &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the expenses charged by the Underlying Fund, and an investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Fund may entail more expenses than a direct investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_IssuerRiskMember"
      id="t_68_c7b2315f_d5e0_5f21_6567_26259e6a7d48"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_69_279baeb0_44f2_7cff_f07f_4fe4783b9ca0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_ManagementRiskMember"
      id="t_70_c275db68_5165_8403_97b7_7cd8d0400461"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_MarketTradingRiskMember"
      id="t_71_4a67b874_2b61_95d6_5f35_596793469b19"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_OperationalRiskMember"
      id="t_72_87313d2f_ddea_4580_e350_29f1857169c3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_SmallFundRiskMember"
      id="t_73_bf853f13_b86d_6e16_0912_701ab0d4d1b9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_TaxRiskMember"
      id="t_74_ddde8c14_310a_2f56_70e1_acf3bbbcbaca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The tax rules and limitations that apply to the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause some or all of its income and gain to be taxable as ordinary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income or at ordinary income rates, may accelerate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of income and gain, and may defer its use of losses, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;all of which are expected to have negative tax consequences for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and Fund investors. The Fund expects that its ownership &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of shares of the Underlying Fund and sale of call options on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index generally will constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;straddles&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions with respect to personal property) under section 1092 of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Internal Revenue Code (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The straddle rules generally do &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not apply if all the straddle&#x2019;s offsetting positions consist of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call options&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(as defined under the IRC) and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;stock to be purchased under the options, and the straddle is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;part of a larger straddle. Unlike certain other funds that utilize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered call strategies, the Fund does not anticipate that this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exception will be available because, as a general matter, the call &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options it writes are not expected to be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered call options.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The straddle rules usually will terminate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s holding periods for its shares of the Underlying Fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;become part of a straddle before the long-term capital gain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holding period (more than one year) has been reached, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to eliminate the Fund&#x2019;s ability to recognize long-term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital gains from a sale or other disposition of such shares. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;straddle rules also usually will defer recognition of realized losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and require the capitalization of certain interest expenses and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carrying charges. Similarly, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wash sale&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; rules may apply to defer &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the recognition of loss by the Fund from the disposition of stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or securities at a loss in a case in which identical or substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;identical stock or securities (or an option to acquire such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property) is or has been acquired within a prescribed period. As a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of the foregoing, an investor may be subject to significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater amounts of tax as a result of the investment than would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;apply to an investment in a fund engaged in a different investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083814Member_TrackingErrorRiskMember"
      id="t_75_51518e3f_f3cf_195f_80d7_e99c570b245f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. To the extent that the Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;achieve its investment objective through investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, the Fund may experience increased tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error as compared to investing directly in the securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets included in the underlying index of the Underlying Fund.&#160;A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund that tracks an index with exposure to swaps, options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures and/or other derivatives may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;Until the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reaches greater scale, it may experience higher tracking error &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than is typical for similar index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000083814Member"
      id="t_42_9f6189b7_468a_43cc_b9d6_a08b38124207"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000083814Member"
      id="t_43_ec9aba74_0e5b_469d_8e03_a8f7a4e696d3">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000083814Member"
      id="t_76_18e1ee5e_597f_3eda_63db_3c25f293ffa1"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000083815Member"
      id="t_54_9fd6a493_a92d_7287_5bef_375c3946019e"> iSHARES&#xae; S&amp;P 500 BUYWRITE ETF  Ticker: IVVWStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000083815Member"
      id="t_44_5f5a5a58_5274_4e15_89f4_163383b8e32d">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000083815Member"
      id="t_45_a6c9e446_abc5_4870_8e0e_a7ccc11fbc48"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares S&amp;amp;P 500 BuyWrite ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index that reflects a strategy of holding the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iShares Core S&amp;amp;P 500 ETF while writing (selling) one-month call options to generate income.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000083815Member"
      id="t_46_9a5001d0_1808_4e01_bd14_01e62f656de1">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000083815Member"
      id="t_47_807ced1a_1078_4ee1_9942_bfd297674b4e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000083815Member"
      id="t_59_7635e2e5_2a55_73af_f101_123491a8c5c8">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000083815Member"
      id="t_87_861dfd2e_1f41_6a83_0753_b3fc2f4bcf37">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000083815Member_C000247832Member"
      decimals="4"
      id="h_98_ab38996a_77eb_4686_b572_4150ecddeeb8"
      unitRef="pure">0.0022</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000083815Member_C000247832Member"
      decimals="4"
      id="h_99_16ae3b32_7657_48f1_8760_66da42549196"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000083815Member_C000247832Member"
      decimals="4"
      id="h_100_3220034c_6558_4c20_88d7_392dfe49cfae"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000083815Member_C000247832Member"
      decimals="4"
      id="h_101_689bbb05_3a9d_4184_94c7_182ca111a9e5"
      unitRef="pure">0.0003</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000083815Member_C000247832Member"
      decimals="4"
      id="h_102_6ace4e9f_3274_4617_96fc_f9039c823d90"
      unitRef="pure">0.0025</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000083815Member"
      id="t_57_b270baa3_d54e_a027_79ec_697e2cafc1e2">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000083815Member"
      id="t_86_faa5d933_8f15_269a_2fb2_b3a48f3e84cb">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000083815Member_C000247832Member"
      decimals="INF"
      id="h_103_a828dd24_0821_4a80_ae22_7699849fb3d9"
      unitRef="USD">26</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000083815Member_C000247832Member"
      decimals="INF"
      id="h_104_3beecf40_13fb_42a2_993c_f301df9ff0ea"
      unitRef="USD">80</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000083815Member_C000247832Member"
      decimals="INF"
      id="h_105_8d30c4de_a075_4624_ab16_d57a2257fe0d"
      unitRef="USD">141</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000083815Member_C000247832Member"
      decimals="INF"
      id="h_106_eae87aea_30d5_4a55_874f_0e163f182773"
      unitRef="USD">318</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000083815Member"
      id="t_55_42336f00_0b1c_be60_1ef1_2017b8e8b6b1">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000083815Member"
      id="t_56_f3e09fc7_a9b1_acaa_cde7_933edd9a43ee">The Fund or the Underlying Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate for the Fund or the Underlying Fund may indicate higher transaction costs and may cause the Fund or the Underlying Fund to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to the Underlying Fund included as part of acquired fund fees and expenses), affect the Fund&#x2019;s performance. From inception (March 14, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 1% of the average value of its portfolio. To the extent the Underlying Fund incurs costs from high portfolio turnover, such costs may have a negative effect on the performance of the Fund.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000083815Member"
      decimals="4"
      id="h_107_eb36d2ea_aec3_42f5_ae36_5638af292d2a"
      unitRef="pure">0.01</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000083815Member"
      id="t_49_c5f86d69_87a5_4959_94dd_3db6d832e051"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000083815Member"
      id="t_50_fa7cffe5_065a_4a5e_adcd_128b41db01b2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Cboe S&amp;amp;P &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;500 Enhanced 1% OTM BuyWrite Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is designed to measure the performance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a strategy of holding the iShares Core S&amp;amp;P 500 ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) while writing (selling) one-month call options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily on the S&amp;amp;P 500 Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) to generate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income. The Fund seeks to achieve its investment objective by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing a substantial portion of its assets in the Underlying Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and options on the Option Index. A strategy of holding a stock or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basket of stocks and selling call options that reference the stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or basket of stocks is commonly known as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;buy-write&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; strategy. The Underlying Index is a product of Cboe &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Indices, LLC or its affiliates (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CGI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and S&amp;amp;P Dow Jones Indices LLC or its affiliates (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index provider for the Underlying Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Fund seeks to track the investment results of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index, which measures the performance of the large-capitalization&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; sector of the U.S. equity market, as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI. The securities in the Option Index represent a broad range &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of industries and are weighted based on the float-adjusted market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of their outstanding shares.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index uses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;European-style&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; call options, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can be exercised only on their expiration date. The options trade &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on national securities exchanges. In writing a call option, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receives a premium, and the purchaser of the option has the right &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to buy the value of the Option Index at the option&#x2019;s strike price at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expiration. However, the Fund does not expect to settle the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding option positions; generally, it purchases offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call options on the roll date (as defined below) as necessary to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;close out the open call position(s). Although the Fund receives &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option premiums, it does not participate in any market gains of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund that exceed the equivalent strike price of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;option on the Option Index. The Fund fully participates in any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declines in the value of the Underlying Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to write call options equal to the full notional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of shares of the Underlying Fund. In other words, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund aims for its short option position in the Option Index to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fully offset, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by the long position that the Fund holds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in shares of the Underlying Fund. At times, however, there may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a notional mismatch due to differences between the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and the Option Index with respect to pricing, tracking error, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends, and other factors. In addition, the Fund may opt not to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;write any options in certain circumstances, primarily if the option &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is far &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;out of the money&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the strike price exceeds the price of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Option Index) and would generate minimal premium income.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Each call option used in the Underlying Index has a strike price &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;closest to 101% of the closing value of the Option Index one day &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prior to the roll date. The roll date is the day that open call option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions are closed out by purchasing the offsetting call option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions and subsequently writing new call options that expire &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following month. The roll date is the business day preceding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the expiration date of the options in the Underlying Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is rebalanced monthly at the close of trading on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the roll date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;If, on the day prior to the roll date, the premium that an option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;writer would hypothetically receive on the new 101% call option is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than five basis points of the closing value of the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on that day, the Underlying Index will instead select the call option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with the strike price closest to 100% of the closing value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index. Selecting an option with a strike price closest to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;100% (rather than 101%) in these circumstances is designed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;avoid writing an option whose potential trading costs would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exceed the option&#x2019;s premium.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may write options on different dates than the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&#x2019;s roll date and may use strike prices, contract sizes, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity dates that are different than those for the options used in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. In addition, the Fund may write options that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are not on the Option Index but that have investment and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics, in the aggregate, similar to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options used in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund makes monthly distributions consisting of the option &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;premium received and any dividends received from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, subject to a cap of 2% of the Fund&#x2019;s NAV per month. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is likely to distribute an amount greater than its earnings and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;profits, resulting in a return of capital.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, a significant portion of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is represented, through its holdings in the Underlying Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by securities of companies in the technology sector.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments selected are expected to have, in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate, investment characteristics (based on factors such as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market value and industry weightings), fundamental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (such as return variability and yield) and liquidity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures similar to those of an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#160;and the Underlying Fund may not hold all of the securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other instruments in the applicable Underlying Index and may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain securities or other instruments that are not included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is provided by the Index Provider and SPDJI &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and other instruments in the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities) and repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered to be issued by members of any industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000083815Member"
      id="t_60_709e4ba6_48f2_d0d5_b124_ca0929084321"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000083815Member"
      id="t_51_5db6724b_f29c_4028_bbee_c55c8ee1b815"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000083815Member_RiskLoseMoneyMember"
      id="t_61_07a7f693_4d30_1a8f_caee_29177cf904b0">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_CoveredCallOptionRiskMember"
      id="t_63_bee172e6_a835_c0c9_2957_57e64d1dc876"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Covered Call Option Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to tracks the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of the Underlying Index in part by writing covered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call options on the Option Index in return for the receipt of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;premiums. In so doing, the Fund gives up the opportunity to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;benefit from potential increases in the value of the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above the exercise price of the options. The Fund also continues &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to bear the risk of declines in the value of the Underlying Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is closely correlated to the value of the Option Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;premiums received from the options may not be sufficient to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;offset any losses sustained from the volatility of the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the Underlying Fund over time. In addition, the Fund&#x2019;s ability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to sell shares of the Underlying Fund is limited while the option is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in effect unless the Fund extinguishes the option position through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchase of an offsetting identical option prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expiration of the written option.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The covered call strategy may be subject to imperfect matching or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price correlation between the written options on the Option Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the Underlying Fund, which could reduce the Fund&#x2019;s returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Exchanges may suspend the trading of options (for example, due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to volatile markets or if trading in other index-related instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is halted). If trading is suspended, the Fund may be unable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;write or purchase options at times that may be desirable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advantageous to the Fund to do so. If the Fund is unable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extinguish the option position before exercise, the Fund may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;required to sell shares of the Underlying Fund, which may result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased transaction costs, tracking error, over- or under-investment,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and potentially the realization of capital gains. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Further, this could lead to selling the corresponding options at a &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less favorable price than the Fund might have received had the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options been extinguished.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund uses options that are struck once per month, and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timing of changes in the price of the Underlying Fund and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index may affect the Fund&#x2019;s performance. For example, if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund or the Option Index experiences a drop in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price followed by a quick rebound, the Fund may be unable to fully &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;participate in the rebound if the rebound occurs immediately after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s roll date. In addition, if trading is suspended, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be unable to purchase an offsetting option for purposes of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;closing out an existing written option at the originally scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time and date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The options written by the Fund are not expected to be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as defined under FINRA Rule 2360, in part due to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nature of the underlier (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the Option Index). Instead, the Fund is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to post margin with a clearing broker to satisfy &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory margin requirements with respect to the written &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options. The Fund is subject to the risk that the clearing broker &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could default on its obligation to return the margin posted in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;connection with the options written by the Fund. In the event of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such a default, the Fund could experience lengthy delays in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recovering its assets or obtain no recovery at all, and the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an investment in Fund shares would likely decrease.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_RiskOfInvestingInTheUSMember"
      id="t_64_32c42bd0_58d1_df1b_6d59_a98f08fb5879"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_LargeCapitalizationCompaniesRiskMember"
      id="t_65_a4af968c_2166_4df6_8123_13fc0b4b5455"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large-Capitalization Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Large-capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies may be less able than smaller-capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies to adapt to changing market conditions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;competitive challenges. Large-capitalization companies may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more mature and subject to more limited growth potential &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared with smaller-capitalization companies. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of large-capitalization companies could trail the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;overall performance of the broader securities markets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_MarketRiskMember"
      id="t_66_20bac4bc_bd27_c891_b715_6b5ac4dc0fb9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_IndexRelatedRiskMember"
      id="t_67_57165194_f130_dcb1_1f4c_e31453703210"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_AssetClassRiskMember"
      id="t_68_5534766f_8db1_9a4b_31f4_6df36ac95c2c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_AssetsUnderManagementAUMRiskMember"
      id="t_69_522832d5_b75d_664c_4187_13a78fe55c6e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_70_4b92ac70_f3d5_2812_807d_af25b0c89438"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_ConcentrationRiskMember"
      id="t_71_c2e0c5d0_5b76_71b9_6197_987d7ad53b75"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_CybersecurityRiskMember"
      id="t_72_7f1d2f68_df99_f613_f6eb_3832e072cc22"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_DerivativesRisksMember"
      id="t_73_c84af813_810b_1437_b2e5_ebb628048b5f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s use of derivatives (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., futures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forwards, swaps, options) may be riskier than other types of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments and may not have the intended effect on the Fund&#x2019;s &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. Derivatives can be sensitive to changes in economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and market conditions, and they may increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility. The Fund also may experience reduced returns as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of transaction costs and losses on derivatives positions. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is the risk of imperfect correlation between the value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative and that of the asset underlying the derivative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives may create investment leverage, which could result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;losses that significantly exceed the Fund&#x2019;s original investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives are subject to the risk of mispricing or improper &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation, particularly if there is not a liquid secondary market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the instrument. Certain derivatives are subject to counterparty &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk, which is the risk that the other party in the transaction will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not fulfill its contractual obligations. The use of derivatives also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposes the Fund to additional operational and legal risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_DistributionTaxRiskMember"
      id="t_74_dc61afb4_8a3d_c3d0_09c0_ce26aa9ef964"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Distribution Tax Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund currently expects to make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions on a regular basis. While the Fund will normally pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;its income as distributions, the Fund's distributions may exceed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's income and gains for the Fund's taxable year. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be required to reduce its distributions if it has insufficient &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income. Distributions in excess of the Fund's current and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;accumulated earnings and profits will be treated as a return of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital. Distributions in excess of the Fund's minimum distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, but not in excess of the Fund's earnings and profits, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be taxable to Fund shareholders and will not constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nontaxable returns of capital. A return of capital distribution &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally will not be taxable but will reduce the shareholder's cost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis and will result in a higher capital gain or lower capital loss &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when those Fund shares on which the distribution was received &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are sold. Once a Fund shareholder's cost basis is reduced to zero, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;further distributions will be treated as capital gain, if the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholder holds shares of the Fund as capital assets. Because &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund's distributions may consist of return of capital, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may not be an appropriate investment for investors who do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;want their principal investment in the Fund to decrease over time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or who do not wish to receive return of capital in a given period.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_EquitySecuritiesRiskMember"
      id="t_75_795fca7a_743d_1c88_60a1_8eb93a4a40ee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Equity securities are subject to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in value, and their values may be more volatile than those of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes. The value of a security may decline for a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reasons that may directly relate to the issuer as well as due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;general industry or market conditions. Common stock is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subordinated to preferred securities and debt in a company&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital structure. Common stock has the lowest priority, and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greatest risk, with respect to dividends and any liquidation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments in the event of an issuer&#x2019;s bankruptcy.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_InvestmentInUnderlyingFundRiskMember"
      id="t_76_1c4c0b2d_b47a_1de8_a60d_c08e978234cb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, so the Fund&#x2019;s investment performance and risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are likely to be directly related to those of the Underlying Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s NAV will change with changes in the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund and other assets that the Fund holds. The shares &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Fund may trade at a premium or discount to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly bear &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the expenses charged by the Underlying Fund, and an investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Fund may entail more expenses than a direct investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_IssuerRiskMember"
      id="t_77_ed410342_b5a3_eb1a_9d17_ac5547cd7a05"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_78_2cc771c4_c2f9_537d_3899_f81f75c31ca3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_ManagementRiskMember"
      id="t_79_14a1e1e4_ccad_7434_f6d7_0f9a0252471f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_MarketTradingRiskMember"
      id="t_80_765f0e8f_9721_776a_2119_4997c94358e8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_OperationalRiskMember"
      id="t_81_593bcfa5_e745_c111_788e_034f7c36daab"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_SmallFundRiskMember"
      id="t_82_aab085d8_86cc_52ca_b7e8_392c25194480"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_TaxRiskMember"
      id="t_83_6cc704c4_58ed_ca29_8b0c_f9e9c986a415"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The tax rules and limitations that apply to the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause some or all of its income and gain to be taxable as ordinary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income or at ordinary income rates, may accelerate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognition of income and gain, and may defer its use of losses, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;all of which are expected to have negative tax consequences for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and Fund investors. The Fund expects that its ownership &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of shares of the Underlying Fund and sale of call options on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Option Index generally will constitute &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;straddles&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (offsetting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions with respect to personal property) under section 1092 of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Internal Revenue Code (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The straddle rules generally do &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not apply if all the straddle&#x2019;s offsetting positions consist of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified covered call options&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(as defined under the IRC) and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;stock to be purchased under the options, and the straddle is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;part of a larger straddle. Unlike certain other funds that utilize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered call strategies, the Fund does not anticipate that this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exception will be available because, as a general matter, the call &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;options it writes are not expected to be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;qualified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;covered call options.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The straddle rules usually will terminate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s holding periods for its shares of the Underlying Fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;become part of a straddle before the long-term capital gain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holding period (more than one year) has been reached, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to eliminate the Fund&#x2019;s ability to recognize long-term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital gains from a sale or other disposition of such shares. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;straddle rules also usually will defer recognition of realized losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and require the capitalization of certain interest expenses and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carrying charges. Similarly, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wash sale&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; rules may apply to defer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the recognition of loss by the Fund from the disposition of stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or securities at a loss in a case in which identical or substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;identical stock or securities (or an option to acquire such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property) is or has been acquired within a prescribed period. As a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of the foregoing, an investor may be subject to significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater amounts of tax as a result of the investment than would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;apply to an investment in a fund engaged in a different investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_TechnologyCompaniesRiskMember"
      id="t_84_eee0641f_cfd4_291c_aeb1_b87c26270a03"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Technology Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Technology companies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies that rely heavily on technological advances may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited product lines, markets, financial resources, supply chains &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and personnel. These companies typically face intense &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;competition, potentially rapid product obsolescence and changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in product cycles and customer preferences. They may face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unexpected risks and costs associated with technological &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, such as artificial intelligence and machine learning. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Technology companies also depend heavily on intellectual &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property rights and may be adversely affected by the loss or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impairment of those rights. Technology companies may face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased government scrutiny and may be subject to adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government or legal action.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000083815Member_TrackingErrorRiskMember"
      id="t_85_640d5438_d66c_1b19_99fc_ca1bc278f74e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. To the extent that the Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;achieve its investment objective through investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund, the Fund may experience increased tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error as compared to investing directly in the securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets included in the underlying index of the Underlying Fund.&#160;A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund that tracks an index with exposure to swaps, options, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures and/or other derivatives may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;Until the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reaches greater scale, it may experience higher tracking error &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than is typical for similar index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000083815Member"
      id="t_52_9c057637_9548_4070_92c2_8365d1ccd10c"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000083815Member"
      id="t_53_dc1761ad_8388_43bf_bec8_864deaabc3c4">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000083815Member"
      id="t_62_ebaabb4a_86e3_420a_ae29_9a2863640b16"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000044409Member"
      id="t_163_e357e60f_78ba_d867_fdab_9e7c078f088c"> iSHARES&#xae; YIELD OPTIMIZED BOND ETF  Ticker: BYLDStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000044409Member"
      id="t_54_39fd70d7_2df6_457b_8f08_96a221f080a1">  Investment Objective  </rr:ObjectiveHeading>
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      contextRef="S000044409Member"
      id="t_55_86b9fc0a_bf28_4bb0_8b44_221ef495be7b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Yield Optimized Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of underlying fixed income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds that collectively seek to deliver current income.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000044409Member"
      id="t_56_2c684d1f_f741_4750_b45d_b6e438b185bd">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000044409Member"
      id="t_57_9dd6b087_fa2f_45d6_9714_5ddf2aab2c57"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive its management fees through February 28, 2026. The contractual waiver may be terminated prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;February 28, 2026 only upon written agreement of the Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000044409Member"
      id="t_164_e1b42d22_a36f_749a_f56b_d567c33cff7e">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000044409Member"
      id="t_182_db508eee_dd05_0f65_5024_2737b3f8f9b2">February 28, 2026</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000044409Member"
      id="t_181_20854741_3e4c_8d14_6510_5b4a4d743d06">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_108_f0ae9ae8_7df0_41fa_b3ac_b9f6cdfb67d3"
      unitRef="pure">0.0028</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_109_a1dd4918_4b32_4eba_ab00_26029993a3f0"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_110_e1a68bf8_df2c_4c29_8b5f_536998656435"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_111_72e92a89_88bf_4092_8df2_814da9edb158"
      unitRef="pure">0.0017</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_112_9e0b8034_e34a_4f34_858b_7267ca184921"
      unitRef="pure">0.0045</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_113_4249cee8_63e3_4eaf_a0b6_b00db47e9752"
      unitRef="pure">-0.0028</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_114_9381807b_7d1a_448c_be7c_b976b64e0003"
      unitRef="pure">0.0017</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000044409Member"
      id="t_165_6f696734_7b5e_1f0c_4023_37e28298865b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000044409Member"
      id="t_166_424c5bb0_5388_5922_76a0_5a62084cb9a1">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000044409Member_C000138243Member"
      decimals="INF"
      id="h_115_a1df7ea1_fc69_4790_b39a_e8cb8b6fd37a"
      unitRef="USD">17</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000044409Member_C000138243Member"
      decimals="INF"
      id="h_116_286cda65_4bb0_430c_822d_64d6c64e796d"
      unitRef="USD">116</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000044409Member_C000138243Member"
      decimals="INF"
      id="h_117_31c9235e_6558_492b_8006_272ea07b94d3"
      unitRef="USD">224</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000044409Member_C000138243Member"
      decimals="INF"
      id="h_118_c614c446_f7de_4410_84d4_def915239f47"
      unitRef="USD">540</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000044409Member"
      id="t_167_6f0ab228_0fc6_a9ea_bd50_77ec9a26e83d">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000044409Member"
      id="t_168_7d1e1cae_3193_0326_c6dc_b94a55eb8786">The Fund and the underlying funds in which the Fund invests (each, an &#x201c;Underlying Fund&#x201d; and collectively, the &#x201c;Underlying Funds&#x201d;) may pay transaction costs, such as commissions, when they buy and sell securities (or &#x201c;turn over&#x201d;their portfolios). A higher portfolio turnover rate for the Fund or Underlying Funds may indicate higher transaction costs and may cause the Fund or the Underlying Funds to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to Underlying Funds included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 96% of the average value of its portfolio. To the extent the Underlying Funds incur costs from high portfolio turnover, such costs may have a negative effect on the performance of the Fund.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000044409Member"
      decimals="4"
      id="h_119_03bf9c6e_ba8e_475e_8c22_444cfa274acc"
      unitRef="pure">0.96</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000044409Member"
      id="t_59_e124df75_b0b6_4ddb_b5b0_2db26002b717"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000044409Member"
      id="t_60_52831ad4_372f_41ce_96e7_053a6d8e7b75"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a fund of funds and seeks to track the investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;results of the Morningstar&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. Bond Market Yield-Optimized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5.5pt; position: relative; top: -3.75pt;"&gt;SM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying Index consists &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exclusively of underlying iShares exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that themselves seek investment results corresponding to their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own underlying indexes. The Fund invests primarily in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds and cash and cash equivalents, including shares &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of money market funds advised by BFA or its affiliates (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Cash Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is a broadly diversified fixed-income index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that seeks to deliver current income while maintaining long-term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital appreciation. The Underlying Index is composed of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds within fixed-income sectors that collectively &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have demonstrated relatively high risk-adjusted income on a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consistent basis and meet liquidity characteristics as determined &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Morningstar, Inc.&#x2019;s (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Morningstar&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proprietary index methodology. The goal of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to represent an allocation to five distinct fixed-income sectors, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with the exposure to each sector capped at a specified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of the Underlying Index. The five sectors currently &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, and each sector&#x2019;s respective &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current caps, are: between 10% to 50%&#160;U.S. government and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government-related fixed-income securities, between 10% to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;50%&#160;U.S. securitized fixed-income securities, between 10% to 50% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. investment-grade (as determined by Morningstar) credit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, no more than 20% U.S. non-investment-grade credit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities and no more than 10% emerging market debt. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;five sectors are represented by Underlying Funds that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Morningstar considers to deliver higher risk-adjusted yields. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income sector has its own return and risk profile. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;combined allocation percentages of the five represented sectors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will equal 100%. The Underlying Index is rebalanced and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reconstituted quarterly.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, the Underlying Index included the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;following Underlying Funds within (i) the U.S. government related &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector: iShares 0-3 Month Treasury Bond ETF; (ii) the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securitized sector: iShares CMBS ETF; (iii) the U.S. investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; credit sector: iShares 10+ Year Investment Grade Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bond ETF and iShares Floating Rate Bond ETF; (iv) the U.S. non-investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; sector: iShares Broad USD High Yield Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bond ETF; and (v) the emerging market debt sector: iShares J.P. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Morgan EM High Yield Bond ETF. The Underlying Index may add, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eliminate or replace Underlying Funds at reconstitution. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying&#160;Index may indirectly include securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign entities. As of October 31, 2024, a significant portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Funds' Underlying Indexes is represented by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign and quasi-sovereign obligations. The components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;To the extent that BFA uses a representative sampling indexing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy to manage the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;selected are expected to have, in the aggregate, investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (based on factors such as market value and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry weightings), fundamental characteristics (such as return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;variability and yield) and liquidity measures similar to those of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The Fund&#160;or each Underlying Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may or may not hold all of the securities in the applicable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index and to-be-announced &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that have economic characteristics that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantially identical to the economic characteristics of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities of the Underlying Index, and the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest at least 90% of its assets in fixed income securities of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;types included in the Underlying Index that BFA believes will help &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a TBA position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for purposes of calculating investments in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index. Cash and cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments associated with a derivative position will be treated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as part of that position for the purposes of calculating the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of investments included in the Underlying Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Morningstar, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities) and repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered to be issued by members of any industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000044409Member"
      id="t_169_19dfdf1b_4fb1_9e3e_af63_6361890f9cf3"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000044409Member"
      id="t_61_621ff459_35d5_471f_9e7a_be9b3379ccbc"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000044409Member_RiskLoseMoneyMember"
      id="t_129_ada6ea49_3760_7c91_64a5_914c19111e4f">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_InterestRateRisksMember"
      id="t_130_a1957a12_b365_18fd_dd28_86fa52a0ba89"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_CreditRisksMember"
      id="t_131_82bee67b_e99a_4b67_487d_6f1f3eeb0540"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_InvestmentInUnderlyingFundRiskMember"
      id="t_132_b85cfdce_588e_5c0d_943b_adad722e40a7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds, so the Fund&#x2019;s investment performance and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks are likely to be directly related to those of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds. The Fund&#x2019;s NAV will change with changes in the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Funds and other assets that the Fund holds. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of an Underlying Fund may trade at a premium or discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bear the expenses charged by the Underlying Funds, and an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund may entail more expenses than a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Underlying Funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_MarketRiskMember"
      id="t_133_cbc1d467_1446_3d1a_6417_2aef9317a695"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_IndexRelatedRiskMember"
      id="t_134_9e34e29b_adba_fac2_06dc_1e9bcf25b467"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_AffiliatedFundRiskMember"
      id="t_135_620d9a19_68e4_6ec1_2670_fab6e75003a0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Affiliated Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; In managing the Fund, BFA has the ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;select Underlying Funds and substitute Underlying Funds with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that it believes will achieve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s investment objective. BFA may be subject to conflicts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of interest in selecting Underlying Funds and substituting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds with other ETFs because the fees paid to BFA by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;some Underlying Funds and other ETFs managed by BFA may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher than the fees paid by other Underlying Funds. Additionally, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an Underlying Fund may benefit from being selected in terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;enhanced liquidity and accumulation of assets. If an Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or other ETF holds interests in an affiliated fund in excess of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a certain amount, the Fund may be prohibited from purchasing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of that Underlying Fund or other ETF.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000044409Member_AllocationRiskMember"
      id="t_136_b6443412_5e62_ad39_96e8_44b986bf7a26"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Allocation Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s ability to achieve its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective depends, in part, on the Index Provider&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;develop a model that accurately assesses the appropriate asset &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;class allocation for the Fund and selects the best mix of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds and other assets. There is no guarantee that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;these allocation techniques and decisions will produce the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;desired results for the Fund. There is a risk that the evaluations &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and assumptions about asset classes or Underlying Funds, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are used as inputs in the model, may be incorrect. This could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the Fund to be invested, under-invested or not invested in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;one or more asset classes or Underlying Funds at an inopportune &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time, which could adversely affect the Fund&#x2019;s performance.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000044409Member_AssetClassRiskMember"
      id="t_137_1ff92a12_ea3b_f026_b560_582079a91ad1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_187_8de8f103_7c3a_a8dd_8b78_13e0df8ddff4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000044409Member_CallRiskMember"
      id="t_188_4920e0d0_89b2_2c2a_d83f_15ebdd2f4b6e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund or an Underlying Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or repay the security before its stated maturity, and the Fund or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an Underlying Fund may have to reinvest the proceeds in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities with lower yields, which would result in a decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's income, or in securities with greater risks or with other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less favorable features.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000044409Member_ConcentrationRiskMember"
      id="t_189_9cfa3dbe_0250_96ab_c3fb_d6888850ff9b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_CurrencyRiskMember"
      id="t_190_66d6f020_c10c_8fe4_6af3_c5e5bf37138d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_CybersecurityRiskMember"
      id="t_191_79fca307_54f4_a0f1_4572_ad78df34dec7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000044409Member_ExtensionRiskMember"
      id="t_192_b88e6e97_d6e4_00e7_b317_803df43f95f7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s or the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds' income and potentially in the value of the Fund&#x2019;s or an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund's investments.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000044409Member_HighYieldSecuritiesRiskMember"
      id="t_193_23b27a6d_abda_222f_8c54_379704835d44">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_IlliquidInvestmentsRiskMember"
      id="t_194_d43ca619_1477_d3a5_dbf3_798f9c3f7b47">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_IncomeRiskMember"
      id="t_195_7e7b8870_1e1f_5cd7_d53e_6f8cf019097a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline due to a decline in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation, deflation or changes in inflation expectations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_IssuerRiskMember"
      id="t_196_7b0d6cad_3445_250e_b41f_15bc9baaa738">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_ManagementRiskMember"
      id="t_197_f81799c5_e608_d2fd_b10f_ef354ae88f04">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_MarketTradingRiskMember"
      id="t_198_4aea7066_0c56_0f37_3240_a07368c41c00">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_NationalClosedMarketTradingRiskMember"
      id="t_199_96aece3c_08ba_cc64_d1cb_53b0c06bee53">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_NonUSSecuritiesRiskMember"
      id="t_200_83b1a17f_d798_2b32_5967_857c57977e6e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_OperationalRiskMember"
      id="t_201_c3805beb_6c42_0d52_eee7_49f20591c2ff">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_202_54b3f069_d8fc_71a6_16a8_3da6cb2935a7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_ReinvestmentRiskMember"
      id="t_203_9574bb02_fe7f_b993_dd09_d188708d3936">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund &#160;or an Underlying Fund may invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a portion of its assets in short-term fixed-income instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and, as a result, may be adversely affected if interest rates fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because they may have to invest in lower-yielding bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index are substituted.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_RiskOfInvestingInChinaMember"
      id="t_204_96e29d70_2e79_8217_e0bf_3b6f04d5bc27">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund or the Underlying Funds to risks specific to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China. China may be subject to considerable degrees of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic, political and social instability. China is an emerging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market and demonstrates significantly higher volatility from time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to time in comparison to developed markets. Over the last few &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decades, the Chinese government has undertaken reform of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic and market practices and has expanded the sphere of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;private ownership of property in China. However, Chinese markets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally continue to experience inefficiency, volatility and pricing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anomalies resulting from governmental influence, a lack of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information and/or political and social &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. Chinese companies are also subject to the risk that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese authorities can intervene in their operations and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;structure. Internal social unrest or confrontations with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;neighboring countries, including military conflicts in response to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such events, may also disrupt economic development in China &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and result in a greater risk of currency fluctuations, currency non-convertibility,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; interest rate fluctuations and higher rates of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_205_9861b62e_7f54_246b_d472_5136305bffa8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_RiskOfInvestingInDevelopedCountriesMember"
      id="t_206_fbc076a5_8fc8_5115_2c77_c98f947eba6e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Developed Countries&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Fund's investment in&#160;&#160;developed country issuers will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to legal, regulatory, political, currency, security, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic and other risks associated with developed countries. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Developed countries tend to represent a significant portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;global economy and have generally experienced slower economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;growth than some less developed countries. Certain developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries have experienced security concerns, such as war, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terrorism and strained international relations. Incidents involving &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a country&#x2019;s or region&#x2019;s security may cause uncertainty in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and may adversely affect its economy and the Fund&#x2019;s or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an Underlying Fund's investments. In addition, developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries may be adversely impacted by changes to the economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions of certain key trading partners, regulatory burdens, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt burdens and the price or availability of certain commodities.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_RiskOfInvestingInSaudiArabiaMember"
      id="t_207_f1b84cb4_03b8_4e0a_e052_103190e53a9a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Saudi Arabia&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers subjects the Fund to legal, regulatory, political, currency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, and economic risks that are specific to Saudi Arabia. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economy of Saudi Arabia is dominated by petroleum exports. A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sustained decrease in petroleum prices could have a negative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on all aspects of the economy. Investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of Saudi Arabian issuers involve risks not typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with investments in securities of issuers in more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries, which may negatively affect the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s investments. Such heightened risks may include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, the expropriation and/or nationalization of assets, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on and government intervention in international trade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;confiscatory taxation, political instability, including authoritarian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or military involvement in governmental decision-making, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;armed conflict, crime and instability as a result of religious, ethnic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or socioeconomic unrest. Instability in the Middle East region &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could adversely impact the economy of Saudi Arabia, and there is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no assurance of political stability in Saudi Arabia.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The ability of foreign investors to invest in the securities of Saudi &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arabian companies could be restricted by the Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government at any time, and unforeseen risks could materialize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to foreign ownership of such securities. There are a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;number of ways to conduct transactions in equity securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Saudi Arabian market. The Fund generally expects to transact in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;manner so that it is not limited by Saudi Arabian regulations to a &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;single broker. However, there may be a limited number of brokers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;who can provide services to the Fund, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the prices, quantity or timing of Fund transactions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_RiskOfInvestingInTheUSMember"
      id="t_208_f7750066_6e38_9627_d747_65b49cc51961">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_SecuritiesLendingRiskMember"
      id="t_209_900e2a68_392d_d3d5_ee0e_cbff29406fdc">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_SovereignAndQuasiSovereignObligationsRiskMember"
      id="t_210_819f0980_1d96_2035_c178_4cf46f2ecfa2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Sovereign and Quasi-Sovereign Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in securities issued by or guaranteed by non-U.S. sovereign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;governments&#160;and by entities affiliated with or backed by non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign governments, which may be unable or unwilling to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repay principal or interest when due. In times of economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;uncertainty, the prices of these securities may be more volatile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than those of corporate debt obligations&#160;or of other government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000044409Member_TrackingErrorRiskMember"
      id="t_211_e4799b82_7004_4500_95b3_7bb265918fba">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. To the extent that the Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;achieve its investment objective through investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds, the Fund may experience increased tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error as compared to investing directly in the securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets included in the underlying indexes of the Underlying Funds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044409Member_ValuationRiskMember"
      id="t_212_e83d51d4_61f4_4143_50c6_db23a34ea3ab">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000044409Member"
      id="t_62_963a00a2_5a1e_4ee5_9e3a_e622e03e4492"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000044409Member"
      id="t_170_14facc13_a6fb_3349_7099_9b483d2b9dc2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000044409Member"
      id="t_171_9d4ba3d3_41b4_9224_ae37_2e6bbb752350">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000044409Member"
      id="t_174_0c8b49fd_2e86_7037_878c_d76813597254">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000044409Member"
      id="t_173_386570dd_3ea1_e261_021b_19c171299c5a">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000044409Member"
      id="t_172_e4f6f43f_a635_307d_f577_55b6ad9dd8a1">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000044409Member"
      id="t_175_268f2a03_44a6_8d17_58e1_f1bb10b6b2c2"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000044409Member"
      id="t_176_98dccc5e_51f1_f040_c924_9c8a3a01ab1e"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.38pt;"&gt;6.54%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.50%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000044409Member_C000138243Member"
      id="h_123_8a1cc9a8_c34a_4769_9cec_b71d77bbd55a">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_124_f1100166_4f58_4568_aeb1_d5500ff96d74"
      unitRef="pure">0.0654</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000044409Member_C000138243Member"
      id="h_125_c778f93e_4c33_4ac9_b98b_74fb520a6ef5">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000044409Member_C000138243Member"
      id="h_126_ddb69906_dea3_459a_8be5_36aa2a302508">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_127_d0b3634d_e535_42cf_94a7_ca994ff613b7"
      unitRef="pure">-0.0550</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000044409Member_C000138243Member"
      id="h_128_cc5b8a1d_ede9_4e08_aa5a_0637c48d5b34">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000044409Member"
      id="t_64_c9160121_bedb_4610_bcb1_7d9b885b45d2">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000044409Member_C000138243Member"
      id="t_177_39ec4db9_7bc8_fe8b_2a50_13b719772925">2014-04-22</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_129_ff0d646f_0d51_4cb8_9ff9_d331c3182b8a"
      unitRef="pure">0.0432</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_130_b50c1d7f_6178_46ba_9e47_f55b034392ed"
      unitRef="pure">0.0084</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044409Member_C000138243Member"
      decimals="4"
      id="h_131_5218fed8_4f19_4c52_b8b8_9fc0dd6ea23d"
      unitRef="pure">0.0239</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044409Member_C000138243Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_132_a79334d9_f3fd_4c10_af0c_7785eb521524"
      unitRef="pure">0.0210</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044409Member_C000138243Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_133_c03f2f17_e721_438e_8d88_8fd6268f57d1"
      unitRef="pure">-0.0069</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044409Member_C000138243Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_134_414ef3d3_f20c_4f1c_bd2a_b67173f5132d"
      unitRef="pure">0.0087</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044409Member_C000138243Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_135_ccf35963_fa23_460f_8628_9ac76e4c8c83"
      unitRef="pure">0.0253</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044409Member_C000138243Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_136_09449b79_2417_4aaf_bfed_75f755475fb9"
      unitRef="pure">-0.0001</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044409Member_C000138243Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_137_67e9a85f_226b_49b6_b1a3_a53feeeefa80"
      unitRef="pure">0.0116</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044409Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_138_9c1df98d_3e8c_45e2_b383_ccb851c3de2b"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044409Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_139_9fa14810_2c34_4ecb_b45f_0c807fdd6d9b"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044409Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_140_912b4ea5_f7d2_4433_a1e6_1002af480936"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044409Member_MorningstarUSBondMarketYieldOptimizedIndexMember"
      decimals="4"
      id="h_141_85afae62_e7b7_403c_b2e3_83cd5e978a45"
      unitRef="pure">0.0429</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044409Member_MorningstarUSBondMarketYieldOptimizedIndexMember"
      decimals="4"
      id="h_142_0c93fde0_16a1_40fb_bd16_4041de687168"
      unitRef="pure">0.0068</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044409Member_MorningstarUSBondMarketYieldOptimizedIndexMember"
      decimals="4"
      id="h_143_72f8a490_ea1b_4626_9f88_e2da1a2f2115"
      unitRef="pure">0.0225</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000044409Member"
      id="t_183_66675629_f627_d4c4_cedc_7960fe70c8ca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000044409Member"
      id="t_184_3b3a6a26_10b7_7f31_9196_3292a3a785f8">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000044409Member"
      id="t_185_01e8e7d5_1a40_75b4_46ec_db3d2c1b9bb2">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000044409Member"
      id="t_186_099a0984_622c_0aba_07cb_70b33f587ca9">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000065345Member"
      id="t_162_332e8551_22e6_7864_5c82_41a864309c4a"> iSHARES&#xae; iBONDS&#xae; 2025 TERM HIGH YIELD AND INCOME ETF  Ticker: IBHEStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000065345Member"
      id="t_65_be0185eb_83ac_4f23_8df9_3b1c3c3c4831">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000065345Member"
      id="t_66_7add0734_7cca_439c_9945_7386ed9cbb09"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 2025 Term High Yield and Income ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield and other income generating corporate bonds maturing in 2025.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000065345Member"
      id="t_67_b968ab57_7202_4fa2_aa2d_5b5c953bc2f3">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000065345Member"
      id="t_68_ca03ec87_8b73_43f7_9b40_2a10551733a4"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2025. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000065345Member"
      id="t_206_3ae38fd6_14b8_ea1a_610c_c65225db0478">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000065345Member"
      id="t_163_855a0102_ede8_8928_62b5_df686f098de8">December 15, 2025</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000065345Member"
      id="t_212_bd3de1c0_67ad_ac20_4976_4d06f4e9416b">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_144_f21c7c6c_7484_4a2c_8dd9_452c6bddc0e1"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_145_5c5fc1fd_298a_4040_958c_a878014ae878"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_146_4a96e4f0_f42a_4e45_8843_69f39f2175f0"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_147_149fed2a_55c0_4bc3_89d2_2d025ed67e1d"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_148_5c81d853_11cd_4777_89ae_c8c04aeb3b91"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_149_835212a3_fe73_4cdb_aa82_794db8863459"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_150_089cddec_a546_47c3_b5db_a9a9b0233527"
      unitRef="pure">0.0035</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000065345Member"
      id="t_164_1961d069_e41f_9317_ee6f_717cbeb9c92d">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000065345Member"
      id="t_165_0c6b4774_3450_bd1c_b568_0a511fcf7a42">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2025 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <ist:ExpenseExampleMaturity
      contextRef="S000065345Member_C000211404Member"
      decimals="INF"
      id="h_151_de398e6b_bd19_4a0b_b1f0_4d63defb2cd7"
      unitRef="USD">28</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000065345Member"
      id="t_166_e87ce437_e019_d34d_1fd3_e32d2a1af079">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000065345Member"
      id="t_167_97978e3b_4ec7_72f3_e562_f7080291617a">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 80% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000065345Member"
      decimals="4"
      id="h_152_1e1389f8_a08e_4a6e_b2a5_5ce24aa6db4a"
      unitRef="pure">0.80</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000065345Member"
      id="t_70_52c0b6f7_bf9d_4e22_933b_cdb4ed6f267d"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000065345Member"
      id="t_71_4b6eb6bb_1eff_46ae_bec6_37b43e49ea64"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg 2025 Term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield and Income Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2025, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, fixed-rate, high yield (which are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered below investment-grade) and BBB or equivalently &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated (as determined by Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature between January 1, 2025 and December 15, 2025, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. Securities eligible for inclusion in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are selected from a universe of corporate issuers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;industrial, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial institutions, utilities) determined by Bloomberg. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and financials industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds in the Underlying Index have $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value at the time of inclusion. The non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers included in the Underlying Index consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily of corporate bonds issued by companies domiciled in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries. The Fund will invest in non-U.S. issuers to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent necessary for it to track the Underlying Index. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond included in the Underlying Index must be registered with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SEC, have been exempt from registration at issuance, or have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been offered pursuant to Rule 144A under the Securities Act of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Subject to the methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index discussed below, the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index may carry a coupon that steps-up according to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined schedule (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e., &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the interest rate paid on such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities will increase over time). Securities are market-cap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted within the Underlying Index, with a&#160;&#160;3% cap typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed on any one issuer, and a pro rata distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months before maturity, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last rebalance date on June 30, 2025.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of bonds chosen from two sub-indices,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Bloomberg U.S. High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and the Bloomberg U.S. Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), both of which are stripped of securities maturing outside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the maturity range defined above. BBB-rated bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index will be introduced to the Underlying Index under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following conditions: (1) in the last 1.5 years but before the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last 6 months of the Underlying Index&#x2019;s term, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will introduce BBB-rated bonds (which are considered investment-grade)&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as constituent high yield bonds (which are considered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;below&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;investment-grade) are called, no longer qualify for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(due to, among other factors, sector reclassifications of issuers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the credit rating of bonds included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index or rebalances to maintain issuer limits), or decline in value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to a reference point set at 1.5 years from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&#x2019;s term or (2) if, prior to the last 1.5 years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining in the Underlying Index&#x2019;s term, the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield bonds in the Underlying Index declines below $30 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion, the Underlying Index will add BBB-rated bonds to maintain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a $30 billion minimum market value for the Underlying Index. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final year of the Underlying Index&#x2019;s term, any principal and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest paid by index constituents is treated as follows: (1) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the first six months of the final year, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reinvests proceeds pro-rata into the remaining bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and (2) during the last six months of the final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year, principal is not reinvested and is presumed to be held in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash while earning no interest.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds with a clean price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the price does not include accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest between coupon payments) below $60 are excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index and subject to a 3 month lock-out period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before they are eligible for inclusion again at rebalance. During &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final 1.5 years of the maturity of the index, bonds that fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below $60 at rebalance will be permanently ineligible for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the High Yield Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the Corporate Index. The bonds from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the High Yield Index must have a rating equal to or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ba1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;/&#x201d;BB+&#x201d;/&#x201d;BB+&#x201d; and above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index must have a rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (or equivalent). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider will use the middle rating of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Standard &amp;amp; Poor's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;); when a rating from only two agencies is available, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the lower is used; when only one agency rates a bond, that rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is used. In cases where ratings are not available, other sources &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be used to classify bonds by investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000065345Member"
      id="t_210_fb323351_4446_d450_1b72_ab888cd4ca61"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000065345Member"
      id="t_72_4684f12e_cb82_480f_91c5_61f99f68321c"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000065345Member_RiskLoseMoneyMember"
      id="t_168_a0d03459_1ce7_893d_ee5a_0e6e8791a824">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_HighYieldSecuritiesRiskMember"
      id="t_169_0112d5ce_b486_ae04_d172_79f40a013494"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_CreditRisksMember"
      id="t_170_151a2ab4_0f2b_2a33_3437_c30e3519b4f4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_IncomeRiskMember"
      id="t_171_ab5cbf68_0a7b_64ef_12de_a7e1913ec1ac"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt; &lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_MarketRiskMember"
      id="t_172_395a013d_ba6f_e48c_8864_cf2c2d7efbcd"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_IndexRelatedRiskMember"
      id="t_173_4af785b1_f6da_1a11_6e91_5a004c203a66"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_AssetClassRiskMember"
      id="t_174_dc0bef18_28d0_67df_9d6f_8a5c52f8b2c6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_175_06311ff1_b4da_2649_ff79_003aca526c25"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_CallRiskMember"
      id="t_176_6c7168a8_f240_db2d_4606_22e37a7f31f1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_CashManagementRiskMember"
      id="t_177_fc8e98d9_1ca0_54ce_d177_a58e0ab8c891"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cash Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;If a significant amount of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets is invested in cash and cash equivalents, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform other funds that do not similarly invest in cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents for investment purposes and/or to collateralize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative instruments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_ConcentrationRiskMember"
      id="t_178_0e0e1702_08c3_2f8b_6d3b_181bcd022d00"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_179_0c5c0b78_ce1d_5966_c4d0_7122e79feee1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_CybersecurityRiskMember"
      id="t_180_93101b20_dcb6_d6e9_f386_79773ca5a101"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_DecliningYieldRiskMember"
      id="t_181_423e8cea_c70e_c175_a47a_70552473a1c4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_FinancialCompaniesRiskMember"
      id="t_219_7dfd3c69_6164_6046_5db2_0e0fce7fd110">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_220_87cd53e9_d46b_99e6_96f3_f7e05ea188dd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_IlliquidInvestmentsRiskMember"
      id="t_221_749d3e01_7f58_20a9_7556_ea212e6078d2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_InterestRateRisksMember"
      id="t_222_0d84db12_287d_2e71_78df_dfb5968e7299">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_IssuerRiskMember"
      id="t_223_8e392e2d_5a74_079b_1cf7_f1a7ba907c9e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_ManagementRiskMember"
      id="t_224_2fa5bd10_5e06_4c5d_18ee_137471edb3c4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_MarketTradingRiskMember"
      id="t_225_33fe1625_9410_979f_9fca_f565fb1fdec5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_OperationalRiskMember"
      id="t_226_6babd55e_13ee_ffa5_7ebf_26b7d3d7f2d6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_227_475730b4_6d55_85ca_3a62_214b628d91a8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the 1933 Act. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities typically are subject to legal restrictions on resale and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally are not traded in established public markets. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately issued securities may be deemed to be illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, may be more difficult to value than publicly traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, may be subject to wide fluctuations in value and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have higher transaction costs. There can be no assurance that a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading market will exist at any time for any particular privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued security. Difficulty in selling such securities at a desirable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time or price may result in a loss to the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_ReinvestmentRiskMember"
      id="t_228_13c677ba_b440_7ecd_fd61_d130346eca5f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_RelianceOnTradingPartnersRiskMember"
      id="t_229_c8bf8b2f_ab6d_c021_b76e_450b5f9a3c9e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments. Through its holdings of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of certain issuers, the Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;North American Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_RiskOfInvestingInChinaMember"
      id="t_230_98be13c4_f115_cdb8_64e9_cd9b40d2987c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_231_8699119c_2304_6464_bca5_89dea7f78f3a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_RiskOfInvestingInTheUSMember"
      id="t_232_3ae874a0_177f_5cd9_4d1b_5abbb764f4ed">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_SecuritiesLendingRiskMember"
      id="t_233_0a7dabfa_aa71_7cfb_9edb_b0041c0cab05">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_TrackingErrorRiskMember"
      id="t_234_4944ec87_ded2_78c3_dda0_cecb1c88297e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 9.50pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield securities are an investment focus may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065345Member_ValuationRiskMember"
      id="t_235_b8121703_bba2_72e7_0eab_29dfb5fb3a45">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000065345Member"
      id="t_73_32748252_66d3_460e_91e8_01874367d270"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000065345Member"
      id="t_213_a9c881bb_6515_47b3_039c_a178855790f3"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000065345Member"
      id="t_214_9f1d4e62_1788_a332_ca88_74989d47ed5a">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000065345Member"
      id="t_215_f4501d8d_e4b6_0d87_673f_28dad21d0784">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000065345Member"
      id="t_202_743909ef_560f_e1fc_1b78_3d5f7df6a361">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000065345Member"
      id="t_217_fd7db28c_5a15_10a3_3219_a422067a634e"> 1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000065345Member"
      id="t_205_c223d676_9fd5_bf92_7d3d_5206fa569b86"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000065345Member"
      id="t_218_86767e0b_2e1d_21fa_0d13_01e4ec64b808"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.24pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.24pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 5.99pt;"&gt;8.74%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.24pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.24pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-12.97%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000065345Member_C000211404Member"
      id="h_156_cf819584_58db_41c6_bce3_c060324c70bd">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_157_db600cce_5e86_4f69_a2e0_d04c39e47f80"
      unitRef="pure">0.0874</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000065345Member_C000211404Member"
      id="h_158_36888585_f92e_4bb6_998c_3d03c08f9ffd">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000065345Member_C000211404Member"
      id="h_159_c219eb2a_6ede_498f_9e33_ce7f47372f44">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_160_1a644324_5e61_4e97_9e61_7fb09e419575"
      unitRef="pure">-0.1297</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000065345Member_C000211404Member"
      id="h_161_88fe3c5d_d1df_4dba_a532_11c320c4b9e2">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000065345Member"
      id="t_75_6fa182fa_6a3b_4ea5_b44b_d15047ad4d53">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000065345Member_C000211404Member"
      id="t_204_46e16c6f_69fb_d011_db7d_d0e7ac8b58ff">2019-05-07</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_162_9ca9b815_f7c0_474a_af81_d6507312b41f"
      unitRef="pure">0.0752</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_163_f2e24be1_b220_4c30_b762_dc5a2be643fc"
      unitRef="pure">0.0435</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065345Member_C000211404Member"
      decimals="4"
      id="h_164_03f2824c_750e_43ec_9ea3_a253705a46d6"
      unitRef="pure">0.0482</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065345Member_C000211404Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_165_78cc6358_140d_4f83_958e_cd4e2e05221d"
      unitRef="pure">0.0453</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065345Member_C000211404Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_166_9cda588a_0ac9_4aaf_89a5_fd9d0ec8a0c4"
      unitRef="pure">0.0178</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065345Member_C000211404Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_167_bfae8f29_c9f3_49d3_9030_843f826ad0fb"
      unitRef="pure">0.0226</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065345Member_C000211404Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_168_6fd76816_56fd_4bc6_a5e0_afbea28f8159"
      unitRef="pure">0.0439</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065345Member_C000211404Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_169_305b3f85_a676_49b7_be27_b1ee58911b95"
      unitRef="pure">0.0218</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065345Member_C000211404Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_170_8a2fee2f_43a5_41e3_b71f_e245c6f4f572"
      unitRef="pure">0.0255</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065345Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_171_cc673510_c3f9_42f1_a59b_bd88e8a6b642"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065345Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_172_4fea1678_61d0_4062_8840_48d4e900e380"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065345Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_173_1d8a9f3d_7bbc_4d55_8e62_7550c042aa02"
      unitRef="pure">0.0098</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065345Member_Bloomberg2025TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_174_cfe1b29c_253b_4131_b715_0c024b9b2ec6"
      unitRef="pure">0.0766</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065345Member_Bloomberg2025TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_175_5a6b5350_b77c_4568_b255_6233a73d50a3"
      unitRef="pure">0.0478</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065345Member_Bloomberg2025TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_176_9093ebd3_1c49_4ad3_bda8_c85e6fe3469d"
      unitRef="pure">0.0523</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000065345Member"
      id="t_216_16882135_933b_90a3_28ed_656b93db97a8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000065345Member"
      id="t_207_eb9f8f49_1401_fdca_cbf6_29f03363aecc">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000065345Member"
      id="t_208_bdd91021_948f_5001_2a4d_8708b3eeac25">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000065345Member"
      id="t_209_22205b83_1260_d1db_ee27_74606b5386a4">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000069852Member"
      id="t_196_7b092edf_bdd1_fd6c_59e4_7f059c58ae19"> iSHARES&#xae; iBONDS&#xae; 2026 TERM HIGH YIELD AND INCOME ETF  Ticker: IBHFStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000069852Member"
      id="t_76_dd5f8442_1a16_4c81_adcd_afc19a17803f">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000069852Member"
      id="t_77_0683c717_4248_4b7f_ba0c_0fab0976cfdc"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 2026 Term High Yield and Income ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield and other income generating corporate bonds maturing in 2026.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000069852Member"
      id="t_78_947abbd1_55ed_4ac0_93f7_cf6b972b73f3">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000069852Member"
      id="t_79_e50ad3e8_71ee_4234_8ca6_908cf4862871"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2026. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000069852Member"
      id="t_197_1a1851c4_e14b_3981_a7a5_a1fdb1d611be">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000069852Member"
      id="t_198_f70f63e0_b68b_4002_c923_fec999ba930d">December 15, 2026</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000069852Member"
      id="t_243_74a8bbee_5f66_a46c_e7e7_36d7a09fc60c">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_177_15b37fea_6f24_4e86_b299_514e32c9fb1f"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_178_519619ed_0796_48ca_b4e1_a9f322bd3fcf"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_179_0603de52_cd66_4c80_8076_d32f06e1ccdf"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_180_1cf17c53_1766_4542_85e6_5e9849ef4d18"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_181_c37c9e89_2b19_4894_9df8_185b8490bfd8"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_182_edfa4e84_64c7_4049_af31_8eb9b87d314f"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_183_935485e1_48c8_40c8_9b3f_c77eaad91a66"
      unitRef="pure">0.0035</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000069852Member"
      id="t_199_a74d8eea_a09b_5b93_2f3d_471d24558c89">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000069852Member"
      id="t_200_da5fce4a_d01d_00b4_c42e_56a964d1703a">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2026 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000069852Member_C000222633Member"
      decimals="INF"
      id="h_184_6b70a745_3a2f_4e1b_8176_10f45bf2c33e"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000069852Member_C000222633Member"
      decimals="INF"
      id="h_185_e64c18e9_7ccc_4103_ba86_c82224a0a7d5"
      unitRef="USD">65</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000069852Member"
      id="t_201_fea42f33_0d7e_1c6a_a10a_6787fc931464">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000069852Member"
      id="t_202_aea559ba_922e_0b18_e10f_628ebecc7c18">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 53% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000069852Member"
      decimals="4"
      id="h_186_bfd5f9ec_77a2_4085_9292_f9b8f2afbfbd"
      unitRef="pure">0.53</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000069852Member"
      id="t_81_12e3b23d_e2c9_42d2_b8c3_da4346265d07"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000069852Member"
      id="t_82_fd0128b5_0761_469b_ad7b_fbe48382c420"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg 2026 Term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield and Income Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2026, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, fixed-rate, high yield (which are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered below investment-grade) and BBB or equivalently &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated (as determined by Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature between January 1, 2026 and December 15, 2026, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. Securities eligible for inclusion in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are selected from a universe of corporate issuers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;industrial, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial institutions, utilities) determined by Bloomberg. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and industrial industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds in the Underlying Index have $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value at the time of inclusion. The non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers included in the Underlying Index consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily of corporate bonds issued by companies domiciled in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries. The Fund will invest in non-U.S. issuers to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent necessary for it to track the Underlying Index. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond included in the Underlying Index must be registered with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SEC, have been exempt from registration at issuance, or have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been offered pursuant to Rule 144A under the Securities Act of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Subject to the methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index discussed below, the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index may carry a coupon that steps-up according to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined schedule (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e., &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the interest rate paid on such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities will increase over time). Securities are market-cap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted within the Underlying Index, with a&#160;&#160;3% cap typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed on any one issuer, and a pro rata distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months before maturity, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last rebalance date on June 30, 2026.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of bonds chosen from two sub-indices,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Bloomberg U.S. High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and the Bloomberg U.S. Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), both of which are stripped of securities maturing outside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the maturity range defined above.&#160;&#160;BBB-rated bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index will be introduced to the Underlying Index under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following conditions: (1) in the last 1.5 years but before the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last 6 months of the Underlying Index&#x2019;s term, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will introduce BBB-rated bonds (which are considered investment-grade)&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as constituent high yield bonds (which are considered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;below&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;investment-grade) are called, no longer qualify for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(due to, among other factors, sector reclassifications of issuers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the credit rating of bonds included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index or rebalances to maintain issuer limits), or decline in value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to a reference point set at 1.5 years from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&#x2019;s term or (2) if, prior to the last 1.5 years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining in the Underlying Index&#x2019;s term, the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield bonds in the Underlying Index declines below $30 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion, the Underlying Index will add BBB-rated bonds to maintain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a $30 billion minimum market value for the Underlying Index. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final year of the Underlying Index&#x2019;s term, any principal and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest paid by index constituents is treated as follows: (1) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the first six months of the final year, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reinvests proceeds pro-rata into the remaining bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and (2) during the last six months of the final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year, principal is not reinvested and is presumed to be held in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash while earning no interest.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds with a clean price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the price does not include accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest between coupon payments) below $60 are excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index and subject to a 3 month lock-out period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before they are eligible for inclusion again at rebalance. During &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final 1.5 years of the maturity of the index, bonds that fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below $60 at rebalance will be permanently ineligible for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the High Yield Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the Corporate Index. The bonds from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the High Yield Index must have a rating equal to or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ba1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;/&#x201d;BB+&#x201d;/&#x201d;BB+&#x201d; and above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index must have a rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (or equivalent). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider will use the middle rating of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Standard &amp;amp; Poor's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;); when a rating from only two agencies is available, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the lower is used; when only one agency rates a bond, that rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is used. In cases where ratings are not available, other sources &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be used to classify bonds by investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000069852Member"
      id="t_204_d524cf38_8f10_6b7a_f1cb_bbab7d4f0af9"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000069852Member"
      id="t_83_227ae2de_f45f_4724_95dc_1a833912d939"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000069852Member_RiskLoseMoneyMember"
      id="t_203_e71507b5_faea_c8bc_816b_8a4f57d8834e">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_HighYieldSecuritiesRiskMember"
      id="t_205_456c9686_9722_665e_e006_65e1f475024c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_CreditRisksMember"
      id="t_206_a8c58577_271b_2e54_c6dd_ed2ace42969d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_IncomeRiskMember"
      id="t_207_b57e9d73_27b5_8f2c_127c_805d7d03ba69"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_MarketRiskMember"
      id="t_208_1c2f82a0_b806_cbdb_c816_cef0cdbef9e2"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_IndexRelatedRiskMember"
      id="t_209_e08f5958_0dc6_eafc_1ec0_14677b2297cf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_AssetClassRiskMember"
      id="t_210_d3f46e46_9f82_ced2_e873_a836e86fcf6d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_211_68d33446_ad2e_3186_802d_577cbe57220b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_CallRiskMember"
      id="t_212_f71ad808_3b45_771a_4f70_9f01496d0894"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_ConcentrationRiskMember"
      id="t_213_e1ed1cbb_834a_d3d2_43de_98d96c33152e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_214_dc4fa4de_147b_3a37_da42_cc0df0680594"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_CybersecurityRiskMember"
      id="t_215_e79be848_a5c4_73a3_cb8e_a1d5d93fcd35"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000069852Member_DecliningYieldRiskMember"
      id="t_216_8317deca_916a_01fb_e84c_c6e9c9ae1e79"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_217_d0eecb8c_8971_4e86_b81c_7b3c92812a46"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_IlliquidInvestmentsRiskMember"
      id="t_218_7aa45d2e_c432_b52c_f988_9ec699a8dac0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_IndustrialCompaniesRiskMember"
      id="t_219_a5ef5c7d_257b_97ac_43bb_c17c75b8a4ca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_InterestRateRisksMember"
      id="t_220_fd1609ae_8e46_c725_c611_b3b62add0eca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_IssuerRiskMember"
      id="t_221_6199b3d7_4d9b_298d_d85f_2fa83a260e68"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_ManagementRiskMember"
      id="t_222_05696d52_e25e_9230_fb4b_02c434642543"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_MarketTradingRiskMember"
      id="t_223_68aea902_cd69_5568_ad14_6569e1690abf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_OperationalRiskMember"
      id="t_224_c5539d03_4786_3850_b4ea_2393a76f353e"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_225_0983bdbb_f1ec_d0c7_9184_5bee08db8858"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the 1933 Act. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities typically are subject to legal restrictions on resale and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally are not traded in established public markets. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately issued securities may be deemed to be illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, may be more difficult to value than publicly traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, may be subject to wide fluctuations in value and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have higher transaction costs. There can be no assurance that a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading market will exist at any time for any particular privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued security. Difficulty in selling such securities at a desirable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time or price may result in a loss to the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_ReinvestmentRiskMember"
      id="t_226_50fe80c1_a77c_6bd7_8de2_9f38f6e683d8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_RelianceOnTradingPartnersRiskMember"
      id="t_227_aff509b6_a650_36ca_450a_9739e554535d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments. Through its holdings of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of certain issuers, the Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;North American Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_RiskOfInvestingInTheUSMember"
      id="t_228_df0c913e_f344_4180_d873_511a2fb44bc9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_SecuritiesLendingRiskMember"
      id="t_229_29f5efd7_6a76_79d1_f444_c0b21e03059f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_TrackingErrorRiskMember"
      id="t_230_ae167c28_cfcd_ea2c_35dc_b4b869df94bd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield securities are an investment focus may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000069852Member_ValuationRiskMember"
      id="t_231_4049640b_3ff5_2329_89cc_7783a622408c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000069852Member"
      id="t_84_fdd4c9c2_b9ce_4ef4_ad1e_a6acea9280ee"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000069852Member"
      id="t_236_ef275ff8_20a5_5f52_f4d3_f5e0685c450a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000069852Member"
      id="t_232_032d8c8c_e1c2_e089_a074_9326e5a8ae89">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000069852Member"
      id="t_233_a3fdfa7c_4a77_7502_71b4_73aa0f69a37c"> Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000069852Member"
      id="t_235_e343d78e_139c_4ba6_6cf3_15ced9b4fcba">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000069852Member"
      id="t_245_69342987_5b2f_966a_5426_06fac8e5b627">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000069852Member"
      id="t_237_08bc5683_5c81_f22f_fbd4_2de70f255501"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000069852Member"
      id="t_238_d9a08d1c_1b2d_c6d4_af26_5fa49419b56b"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.2pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.59pt;"&gt;4.26%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.2pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-8.13%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000069852Member_C000222633Member"
      id="h_190_8200f8c2_df32_4762_96b6_706e6994a229">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_191_802ccb27_5dbb_43df_9a00_b8d3b2fc557b"
      unitRef="pure">0.0426</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000069852Member_C000222633Member"
      id="h_192_60229637_24b5_4e2b_b8b5_a291eeb96c82">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000069852Member_C000222633Member"
      id="h_193_f991e439_2f4c_49e6_9a65_9a8270d4c05c">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_194_3dbc612f_6db3_48f4_a1ea_9c21b34c2798"
      unitRef="pure">-0.0813</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000069852Member_C000222633Member"
      id="h_195_9b7d6524_5949_41e1_bcf1_4bbc3df41153">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000069852Member"
      id="t_86_e39d769e_02bb_49d7_b759_8889f2230922">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000069852Member_C000222633Member"
      id="t_239_11984d93_2e3c_edbf_ab1b_f8458e117b79">2020-11-10</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_196_66bba083_919a_4afd_b902_c8c240d7e093"
      unitRef="pure">0.0845</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000069852Member_C000222633Member"
      decimals="4"
      id="h_197_25ec3e6a_a7ea_442c_ac5a_5f590016a740"
      unitRef="pure">0.0438</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000069852Member_C000222633Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_198_ce0254bb_e24b_47d1_ba20_58e624d2f967"
      unitRef="pure">0.0530</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000069852Member_C000222633Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_199_1691a4f5_b2ff_4008_9fc7_b237f94c764d"
      unitRef="pure">0.0178</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000069852Member_C000222633Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_200_2f64b347_a01b_4595_8a46_7961f8df143d"
      unitRef="pure">0.0493</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000069852Member_C000222633Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_201_bcf17504_ca63_4131_9ee5_cf0bc556ca2f"
      unitRef="pure">0.0220</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000069852Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_202_6bd682a9_76c8_4a0e_a3f5_c578d4255024"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000069852Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_203_d9491868_0115_4ff9_8c33_ac76f6867bb5"
      unitRef="pure">-0.0135</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000069852Member_Bloomberg2026TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_204_3a9007e1_a8e4_4818_8ac0_50cf696c4e13"
      unitRef="pure">0.0872</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000069852Member_Bloomberg2026TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_205_760761c8_c763_4ed5_ae09_586b92123cf6"
      unitRef="pure">0.0474</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000069852Member"
      id="t_244_42fc99c5_bc50_8b17_6c28_371f1838f1cf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000069852Member"
      id="t_240_8351d55b_97bf_4cee_4ea3_810e1599f3bd">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000069852Member"
      id="t_241_d5e30576_660a_4eea_ea91_49b1bb2a95e2">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000069852Member"
      id="t_242_996205f3_34ca_1b7e_31aa_a4f88858a0b9">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000072335Member"
      id="t_225_63e40c7e_33ee_fb49_784c_6c7c3f60eb35"> iSHARES&#xae; iBONDS&#xae; 2027 TERM HIGH YIELD AND INCOME ETF  Ticker: IBHGStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000072335Member"
      id="t_87_131c8739_0654_4b6d_afbe_55e442411a5f">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000072335Member"
      id="t_88_e2185443_e921_4e5a_b571_08245922a1f4"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 2027 Term High Yield and Income ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield and other income generating corporate bonds maturing in 2027.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000072335Member"
      id="t_89_b38a56da_93f6_49f9_b1ca_e82c80303aa9">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000072335Member"
      id="t_90_1400e6b8_332f_4064_986d_cc9cc6a3e22e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2027. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000072335Member"
      id="t_275_34321374_026a_1a5c_a9d2_f3a3a260739d">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000072335Member"
      id="t_227_a6fc7f5c_15ed_afcf_0537_09c53404ec78">December 15, 2027</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000072335Member"
      id="t_272_74e8c857_49e2_6f62_105b_7f51735754a5">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_206_ded513b6_065b_4118_bef9_65884a09bf00"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_207_1e70194b_8ef3_41d2_b1af_254f4ad175eb"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_208_4a35c480_edb3_41e9_b4c1_de171dfef959"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_209_3a717da8_53c6_4b64_b4f8_5ff3f8cd5b44"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_210_146ad4fa_4335_4900_8ddd_1cbaca465582"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_211_6eb4f8b3_eca9_452d_a759_eef4881f8a5e"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_212_d997d8a3_171d_4907_8811_d60e9410fdb5"
      unitRef="pure">0.0035</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000072335Member"
      id="t_228_a380aa8b_1d5b_4d9a_e4ae_04bdb3ff7f0e">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000072335Member"
      id="t_229_d5d3db4a_2058_18e6_2e7c_995d11934594">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2027 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000072335Member_C000228465Member"
      decimals="INF"
      id="h_213_eeaa3efb_662f_4c25_ab93_129276be58d1"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000072335Member_C000228465Member"
      decimals="INF"
      id="h_214_854d1826_dca7_497b_b4a9_3b1f647ffaf3"
      unitRef="USD">104</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000072335Member"
      id="t_230_c91f343f_0728_33ae_67d4_ae396a5878cd">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000072335Member"
      id="t_231_87b26a4d_8e5c_e459_bfce_ca256d67971f">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 17% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000072335Member"
      decimals="4"
      id="h_215_ecaf856a_c219_4789_93e1_caf255501b45"
      unitRef="pure">0.17</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000072335Member"
      id="t_92_db5f7613_bd8e_4601_b118_88e197cb4a4f"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000072335Member"
      id="t_93_a539f8ab_9814_4d9d_b2ca_b5136cfeeb41"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg 2027 Term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield and Income Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2027, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, fixed-rate, high yield (which are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered below investment-grade and commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BBB or equivalently rated (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2027 and December 15, 2027, inclusive. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index are selected from a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;universe of corporate issuers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;industrial, financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;institutions, utilities) determined by Bloomberg. As of October 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2024, a significant portion of the Underlying Index is represented &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by securities of companies in the communication services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer goods and services and industrial industries or sectors. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The components of the Underlying Index are likely to change over &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds in the Underlying Index have $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value at the time of inclusion. The non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers included in the Underlying Index consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily of corporate bonds issued by companies domiciled in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries. The Fund will invest in non-U.S. issuers to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent necessary for it to track the Underlying Index. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond included in the Underlying Index must be registered with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SEC, have been exempt from registration at issuance, or have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been offered pursuant to Rule 144A under the Securities Act of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Subject to the methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index discussed below, the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index may carry a coupon that steps-up according to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined schedule (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e., &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the interest rate paid on such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities will increase over time). Securities are market-cap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted within the Underlying Index, with a&#160;&#160;3% cap typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed on any one issuer, and a pro rata distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months before maturity, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last rebalance date on June 30, 2027.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of bonds chosen from two sub-indices,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Bloomberg U.S. High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and the Bloomberg U.S. Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), both of which are stripped of securities maturing outside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the maturity range defined above.&#160;&#160;BBB-rated bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index will be introduced to the Underlying Index under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following conditions: (1) in the last 1.5 years but before the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last 6 months of the Underlying Index&#x2019;s term, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will introduce BBB-rated bonds (which are considered investment-grade)&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as constituent high yield bonds (which are considered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;below&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;investment-grade) are called, no longer qualify for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(due to, among other factors, sector reclassifications of issuers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the credit rating of bonds included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index or rebalances to maintain issuer limits), or decline in value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to a reference point set at 1.5 years from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&#x2019;s term or (2) if, prior to the last 1.5 years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining in the Underlying Index&#x2019;s term, the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield bonds in the Underlying Index declines below $30 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion, the Underlying Index will add BBB-rated bonds to maintain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a $30 billion minimum market value for the Underlying Index. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final year of the Underlying Index&#x2019;s term, any principal and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest paid by index constituents is treated as follows: (1) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the first six months of the final year, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reinvests proceeds pro-rata into the remaining bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and (2) during the last six months of the final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year, principal is not reinvested and is presumed to be held in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash while earning no interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds with a clean price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the price does not include accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest between coupon payments) below $60 are excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index and subject to a 3 month lock-out period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before they are eligible for inclusion again at rebalance. During &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final 1.5 years of the maturity of the index, bonds that fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below $60 at rebalance will be permanently ineligible for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the High Yield Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the Corporate Index. The bonds from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the High Yield Index must have a rating equal to or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ba1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;/&#x201d;BB+&#x201d;/&#x201d;BB+&#x201d; and above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index must have a rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (or equivalent). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider will use the middle rating of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Standard &amp;amp; Poor's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;); when a rating from only two agencies is available, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the lower is used; when only one agency rates a bond, that rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is used. In cases where ratings are not available, other sources &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be used to classify bonds by investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000072335Member"
      id="t_232_b13c623f_5bfa_89b3_6249_f105e8e19f81"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000072335Member"
      id="t_94_27dfe4fc_10ee_465c_b74c_317ad7cebbaf"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000072335Member_RiskLoseMoneyMember"
      id="t_233_d79805ae_7695_39d8_ae92_b617b4bb4c8b">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_HighYieldSecuritiesRiskMember"
      id="t_234_372b47dd_fbb2_f38a_e3aa_76c5b71d788e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_CreditRisksMember"
      id="t_235_f7bab79d_769a_4f79_3704_1983265e9d79"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_IncomeRiskMember"
      id="t_236_6584c772_8de7_a9a5_2dc6_ce2d2106681f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_MarketRiskMember"
      id="t_237_44391aa5_33ef_ef47_fb57_f902bb92c15d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_IndexRelatedRiskMember"
      id="t_238_d16499f7_d924_9f48_f158_b17d5e6bbae7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_AssetClassRiskMember"
      id="t_239_1336ad1d_eabe_5c79_3896_bff5ffab3d1d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_240_9746fbfc_a0d8_67a0_7f63_153fd773e571"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_CallRiskMember"
      id="t_241_00322447_e243_9450_5643_9972f16e85b9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_CommunicationServicesSectorRiskMember"
      id="t_242_e4fad274_8424_d12a_4b9e_f9de7d608dcc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Communication Services Sector Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;communications sector may be affected by industry competition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantial capital requirements, government regulation, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyclicality of revenues and earnings, obsolescence of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;communications products and services due to technological &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advancement, a potential decrease in the discretionary income of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;targeted individuals and changing consumer tastes and interests.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_ConcentrationRiskMember"
      id="t_243_f97075eb_5da0_8fd4_acbb_05d410aa9416"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_244_d03d8f9d_c0f9_ca68_5c53_69b6c7b7fd7b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_CybersecurityRiskMember"
      id="t_245_26016d9f_b775_ce18_f9fc_27d96e28a00d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_DecliningYieldRiskMember"
      id="t_246_3687b94d_88ca_c19d_e3f4_34ae12387e80"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_247_5bcfc828_eb6a_b08c_8f46_b118f10e905b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_IlliquidInvestmentsRiskMember"
      id="t_248_04a59df9_1a35_142b_cfe6_e595d3c7c83b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_IndustrialCompaniesRiskMember"
      id="t_249_449ce984_6302_9296_795c_84f8d57d9283"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_InterestRateRisksMember"
      id="t_250_34a84e59_0c2a_89ba_5e9d_d60379bcfd64"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_IssuerRiskMember"
      id="t_251_027c8c9d_0485_fdfc_b98c_9fed2dba0e41"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_ManagementRiskMember"
      id="t_252_dc15838e_2446_33f5_c2c3_820c401c8117"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_MarketTradingRiskMember"
      id="t_253_f03cbb17_fd92_84ea_0d16_e9e0c11aae57"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_OperationalRiskMember"
      id="t_254_7a5afa1f_c924_611d_4195_9a0e740caeee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_255_2640e595_fcb6_1ecd_b4f7_4da9d339c23a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the 1933 Act. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities typically are subject to legal restrictions on resale and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally are not traded in established public markets. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately issued securities may be deemed to be illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, may be more difficult to value than publicly traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, may be subject to wide fluctuations in value and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have higher transaction costs. There can be no assurance that a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading market will exist at any time for any particular privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued security. Difficulty in selling such securities at a desirable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time or price may result in a loss to the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_ReinvestmentRiskMember"
      id="t_256_8f62e8ce_4eb6_f414_406d_a4ee2e85afd8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_RiskOfInvestingInTheUSMember"
      id="t_257_75194636_8829_a813_2384_2d9516388826"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_SecuritiesLendingRiskMember"
      id="t_258_fff4bb0a_3c1e_1712_5992_e1c5eb2dc68d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_TrackingErrorRiskMember"
      id="t_259_e58bd143_9984_42f8_345d_c82ec8f92e1b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield securities are an investment focus may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072335Member_ValuationRiskMember"
      id="t_260_4f8c7551_3e7b_a83f_6e7d_0d1aabd92084"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000072335Member"
      id="t_95_c60d7e22_5084_451d_aa41_0d9b6dd3a0bd"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000072335Member"
      id="t_265_431f3764_fdff_73b5_0c05_74dbb2b25128"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000072335Member"
      id="t_261_6cae15c3_10c9_1916_94e1_ffd5002a0933">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000072335Member"
      id="t_262_4ae0e00c_a048_6886_1270_8be890dfd232">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000072335Member"
      id="t_263_1badf0d1_6300_38b7_3e04_327b24a43024">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000072335Member"
      id="t_274_a910378c_e3f7_ddd3_41de_8128eb9480ee">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000072335Member"
      id="t_266_6df9566e_c34c_6cd3_88e8_ab382b5e1d6a"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000072335Member"
      id="t_267_9d208245_47be_8bf2_0101_47bc4220c504"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.45pt;"&gt;5.87%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-9.83%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000072335Member_C000228465Member"
      id="h_219_30c677d9_ccb2_4d89_b8bf_22f51592547f">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_220_779f76db_85a6_40ac_9722_fee1c5fce375"
      unitRef="pure">0.0587</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000072335Member_C000228465Member"
      id="h_221_97e93bfc_c9e1_42ea_b2c9_c6c188d8cd26">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000072335Member_C000228465Member"
      id="h_222_dc8c0dd2_b41b_4204_9a3e_fef474a8c57f">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_223_e1168ff8_bd57_4f09_b165_031678d851c9"
      unitRef="pure">-0.0983</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000072335Member_C000228465Member"
      id="h_224_0907533d_b5eb_4014_b3a8_cda8493065d1">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000072335Member"
      id="t_97_86af888e_6206_4c52_92e2_189b78eed011">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000072335Member_C000228465Member"
      id="t_271_e6da11aa_9bf7_2dd0_da06_bc09f5fade4d">2021-07-07</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_225_ddd9be98_fc6c_40fd_a932_f71a613e7026"
      unitRef="pure">0.0709</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072335Member_C000228465Member"
      decimals="4"
      id="h_226_2bef6635_6a98_4314_adac_e05376a34b0a"
      unitRef="pure">0.0269</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072335Member_C000228465Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_227_45d22419_c6da_45ec_8540_ae4b54d27bab"
      unitRef="pure">0.0406</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072335Member_C000228465Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_228_aaff4731_4064_4109_810b_c417f1dacf53"
      unitRef="pure">0.0016</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072335Member_C000228465Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_229_8b0dd296_639c_4195_bfdf_73273c335f68"
      unitRef="pure">0.0413</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072335Member_C000228465Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_230_bf881604_8115_4abb_9186_b1c6809355d0"
      unitRef="pure">0.0093</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072335Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_231_248fa506_dd7d_4913_9988_ad9f02500918"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072335Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_232_55aa0c9a_279c_4575_bf60_d6438bbab92e"
      unitRef="pure">-0.0184</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072335Member_Bloomberg2027TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_233_6a7f0b4e_59c8_4777_acd0_dbcab59a4768"
      unitRef="pure">0.0731</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072335Member_Bloomberg2027TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_234_09c43ddc_03b1_4ecd_a57e_a1107683979c"
      unitRef="pure">0.0295</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000072335Member"
      id="t_273_1731c224_79fb_5214_5547_80197b83dd9d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000072335Member"
      id="t_268_d2613afd_c97a_c894_106c_db9c84322794">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000072335Member"
      id="t_269_25ae39df_6cbe_2797_fb9d_e482e4b846ff">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000072335Member"
      id="t_270_1a129e13_b5c0_712f_cd6c_1cfb772b2a9b">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000075472Member"
      id="t_255_62e673f7_5105_de3a_3406_842429673b7b"> iSHARES&#xae; iBONDS&#xae; 2028 TERM HIGH YIELD AND INCOME ETF  Ticker: IBHHStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000075472Member"
      id="t_98_f0301a83_60d6_45e2_861d_0fdeca00d899">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000075472Member"
      id="t_99_15bd6381_1f6d_4494_ad4e_7aa5163f45bd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 2028 Term High Yield and Income ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield and other income generating corporate bonds maturing in 2028.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000075472Member"
      id="t_100_534fc582_8edb_4caf_bda9_890dca60656d">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000075472Member"
      id="t_101_a5eb2762_a8b8_4efa_9e7b_be7db3e6e2f0"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2028. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000075472Member"
      id="t_304_21a34605_1ff7_8298_c86a_9bab3b8e8f47">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000075472Member"
      id="t_256_68db02de_b5ae_d568_6346_e53617a70f3e">December 15, 2028</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000075472Member"
      id="t_302_772e1de7_4c64_8667_4cf2_13eb34c36f27">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_235_3a7ea509_6b26_4239_9530_b0fd709afbf8"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_236_0a7ec490_53d8_418e_92f3_d595590bdd50"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_237_de8df0fc_2149_4322_b35e_36d76726fbe2"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_238_1b2d7d29_f22e_42f5_b14c_c7e94cc9d632"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_239_b993299c_453c_49cd_ac0d_d828b35badc9"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_240_0cd24da0_7d30_409c_8d3d_74046ac4bc20"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_241_b64d770f_dc06_467e_b94d_c68b8fe2d8d9"
      unitRef="pure">0.0035</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000075472Member"
      id="t_258_49dcddad_d1d9_e3d0_1848_37aba0d4864b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000075472Member"
      id="t_257_fe6eba9a_6d96_9380_0ee9_4f3b00f68f85">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2028 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000075472Member_C000234589Member"
      decimals="INF"
      id="h_242_266e22c4_f1a8_438f_9886_e72b23c9ca24"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000075472Member_C000234589Member"
      decimals="INF"
      id="h_243_c5cf36da_ca10_4542_9be0_f77aaca389cd"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000075472Member_C000234589Member"
      decimals="INF"
      id="h_244_6d0cea98_aa34_41d3_ab27_a66b473246bb"
      unitRef="USD">145</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000075472Member"
      id="t_259_e2deace0_ea52_e8e4_f7a2_8cc8a68ff55f">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000075472Member"
      id="t_260_6ee98421_af54_0f01_ac74_c2598ae8c815">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 13% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000075472Member"
      decimals="4"
      id="h_245_cdd4b886_c345_4fe3_8c0c_9a9090fe860b"
      unitRef="pure">0.13</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000075472Member"
      id="t_103_51b2ca5c_8ead_45b3_b07d_07e43481e5e5"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000075472Member"
      id="t_104_cf912cf8_9a97_4780_8a5a_12596a38b58f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg 2028 Term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield and Income Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2028, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar denominated, taxable, fixed-rate, high yield (which are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered below investment-grade and commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BBB or equivalently rated (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2028 and December 15, 2028, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, the Underlying Index includes approximately 327 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities. Securities eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are selected from a universe of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, industrial, financial institutions, utilities) determined &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Bloomberg. As of October 31, 2024, a significant portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is represented by securities of companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer goods and services and industrial industries or sectors. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The components of the Underlying Index are likely to change over &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds in the Underlying Index have $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value at the time of inclusion. The non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers included in the Underlying Index consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily of corporate bonds issued by companies domiciled in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries. The Fund will invest in non-U.S. issuers to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent necessary for it to track the Underlying Index. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond included in the Underlying Index must be registered with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SEC, have been exempt from registration at issuance, or have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been offered pursuant to Rule 144A under the Securities Act of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Subject to the methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index discussed below, the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index may carry a coupon that steps-up according to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined schedule (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the interest rate paid on such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities will increase over time). Securities are market-cap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted within the Underlying Index, with a&#160;&#160;3% cap typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed on any one issuer, and a pro rata distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months before maturity, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last rebalance date on June 30, 2028.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of bonds chosen from two sub-indices,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Bloomberg U.S. High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and the Bloomberg U.S. Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), both of which are stripped of securities maturing outside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the maturity range defined above. BBB-rated bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index will be introduced to the Underlying Index under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following conditions: (1) in the last 1.5 years but before the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last 6 months of the Underlying Index&#x2019;s term, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will introduce BBB-rated bonds (which are considered investment-grade)&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as constituent high yield bonds (which are considered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade) are called, no longer qualify for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(due to, among other factors, sector reclassifications of issuers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the credit rating of bonds included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index or rebalances to maintain issuer limits), or decline in value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to a reference point set at 1.5 years from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&#x2019;s term or (2) if, prior to the last 1.5 years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining in the Underlying Index&#x2019;s term, the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield bonds in the Underlying Index declines below $30 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion, the Underlying Index will add BBB-rated bonds to maintain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a $30 billion minimum market value for the Underlying Index. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final year of the Underlying Index&#x2019;s term, any principal and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest paid by index constituents is treated as follows: (1) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the first six months of the final year, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reinvests proceeds pro-rata into the remaining bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and (2) during the last six months of the final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year, principal is not reinvested and is presumed to be held in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash while earning no interest.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds with a clean price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the price does not include accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest between coupon payments) below $60 are excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index and subject to a 3 month lock-out period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before they are eligible for inclusion again at rebalance. During &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final 1.5 years of the maturity of the index, bonds that fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below $60 at rebalance will be permanently ineligible for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the High Yield Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the Corporate Index. The bonds from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the High Yield Index must have a rating equal to or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ba1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;/&#x201d;BB+&#x201d;/&#x201d;BB+&#x201d; and above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index must have a rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (or equivalent). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider will use the middle rating of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Standard &amp;amp; Poor&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;); when a rating from only two agencies is available, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the lower is used; when only one agency rates a bond, that rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is used. In cases where ratings are not available, other sources &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be used to classify bonds by investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000075472Member"
      id="t_261_bb31c256_1069_6ffb_2c85_ba149115722c"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000075472Member"
      id="t_105_4e16cb5d_ae7f_4b07_81e4_af2335c948d6"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000075472Member_RiskLoseMoneyMember"
      id="t_262_b3e25dbc_7b71_87d1_6887_8c8490696e4c">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_HighYieldSecuritiesRiskMember"
      id="t_263_e3d26e3b_93bc_9324_4e32_1d6f7d7fce82"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_CreditRisksMember"
      id="t_264_407893c8_7056_87c8_06c9_67ff44dc37ca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_IncomeRiskMember"
      id="t_265_3cbf4c5d_e5a2_344f_d699_b8171432bf54"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_MarketRiskMember"
      id="t_266_3808ae37_40eb_9ec9_dd6b_7b49c4344bc3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_IndexRelatedRiskMember"
      id="t_268_bd19a88e_af97_ea60_91ca_c6b57273f3fc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_AssetClassRiskMember"
      id="t_271_115b60a8_d25c_16c9_1c32_b91d203ef152"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_273_866e6062_0a98_a6eb_c0b0_abfda3d77a65"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_CallRiskMember"
      id="t_274_c0e29718_dbc9_8829_5b94_6253b7842675"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_ConcentrationRiskMember"
      id="t_275_370418b8_ba23_8843_c885_07cb0e5153e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_267_82ce2dd4_c8b6_6185_db07_d7292f3edbdf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_CybersecurityRiskMember"
      id="t_269_2e5c024c_a76d_c536_b3c9_ba474a705096"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_DecliningYieldRiskMember"
      id="t_270_9f912b85_2ce7_83b4_c19f_7b759d306f41"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_272_c1721fa1_32b5_4504_f3be_b699eb736113"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_IlliquidInvestmentsRiskMember"
      id="t_276_1767bd26_049c_1610_ec47_8385abdf4e6d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_IndustrialCompaniesRiskMember"
      id="t_277_5740216c_25b2_c64a_48df_9ba0a7294a45"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_InterestRateRisksMember"
      id="t_278_aaa79abe_6863_ccbd_92d2_85a6f016fc0b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_IssuerRiskMember"
      id="t_279_7ff4f465_ca40_dc65_2457_42e1c8324ad6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_ManagementRiskMember"
      id="t_280_5769cbd4_cced_e52d_f4b6_35c19394cdf2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_MarketTradingRiskMember"
      id="t_281_681e4294_dda3_bd57_888c_757b969b9af9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_RiskNondiversifiedStatusMember"
      id="t_282_3ed9f368_c905_044b_13ba_5cf723726566"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_OperationalRiskMember"
      id="t_283_e604a53d_4bdd_6111_e5ac_ee5a3d6d8500"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_284_848f96af_d6c3_2d76_c3a2_f8d197b4779e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the 1933 Act. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities typically are subject to legal restrictions on resale and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally are not traded in established public markets. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately issued securities may be deemed to be illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, may be more difficult to value than publicly traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, may be subject to wide fluctuations in value and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have higher transaction costs. There can be no assurance that a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading market will exist at any time for any particular privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued security. Difficulty in selling such securities at a desirable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time or price may result in a loss to the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_ReinvestmentRiskMember"
      id="t_285_9146ae43_e1a6_d7b3_b701_887a56ca95c1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_RiskOfInvestingInTheUSMember"
      id="t_286_2363f00c_1189_90d9_91c5_cc86f35fea56"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_SecuritiesLendingRiskMember"
      id="t_287_0a6691ab_e601_b4f2_53a2_78310e4e45d8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_TrackingErrorRiskMember"
      id="t_288_3d721a90_af54_39b0_630c_02204f224b90"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield securities are an investment focus may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075472Member_ValuationRiskMember"
      id="t_289_eb67a0a3_7a3f_c47d_12a6_2fe850b74417"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000075472Member"
      id="t_106_f3bd8ce9_8bb1_4454_81e1_befa9268a85b"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000075472Member"
      id="t_290_e6458601_477b_c730_efcc_94801f38243c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000075472Member"
      id="t_291_87d5a21d_f9b1_7600_0bd1_f67396b19d34">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000075472Member"
      id="t_294_c3b1fdbc_e6d4_d1b7_242e_6f1e3fd67c73">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000075472Member"
      id="t_293_716bbb1c_4683_c3c3_66ee_61a462cbbfe8">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000075472Member"
      id="t_292_3abd1d4b_0370_7aa0_7b51_5a422c437201">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000075472Member"
      id="t_295_ffb44c08_ed11_8e79_1bf0_a689729661eb"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000075472Member"
      id="t_296_1b4ad70f_09b7_cdf0_c578_86a5a51c8b6d"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 22.66pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 22.66pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1pt;"&gt;7.38%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 22.66pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 22.66pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;0.20%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000075472Member_C000234589Member"
      id="h_249_8b425061_8102_4ab2_9ea6_74263df0c81e">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_250_893e75ad_e28a_4b28_9503_b33e4815d7d9"
      unitRef="pure">0.0738</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000075472Member_C000234589Member"
      id="h_251_a7b1f492_4578_424f_a99d_de8c0f24b5c1">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000075472Member_C000234589Member"
      id="h_252_e8315f5f_1793_442a_ba20_a0c6e736b249">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_253_3fb5d524_3301_444b_bb56_b0c32dcd3c01"
      unitRef="pure">0.0020</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000075472Member_C000234589Member"
      id="h_254_8f63fd30_26b0_4c65_ae5b_67c8390f42e3">2023-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000075472Member"
      id="t_108_c466c840_27c5_497e_938e_bc0f0e5615d6">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000075472Member_C000234589Member"
      id="t_301_851a1eb5_94bc_41e3_ec5b_cc05d4eaef7d">2022-03-08</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_255_1411da86_ef62_4c11_8992_239d81eeefb7"
      unitRef="pure">0.0756</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075472Member_C000234589Member"
      decimals="4"
      id="h_256_0e6c3b2d_bd37_4e21_830b_3b0bbb4f527f"
      unitRef="pure">0.0436</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075472Member_C000234589Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_257_f01de2f5_f2bf_415d_8a55_f733d9706393"
      unitRef="pure">0.0455</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075472Member_C000234589Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_258_b7a15c82_fee4_421a_8a49_d94895421828"
      unitRef="pure">0.0153</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075472Member_C000234589Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_259_bb104515_e001_4930_b708_f59a3ae6c084"
      unitRef="pure">0.0441</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075472Member_C000234589Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_260_d5476c0a_032e_4368_bbf6_f4c06a401d82"
      unitRef="pure">0.0206</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075472Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_261_5aa90f0e_c23b_46cf_80cf_bc180cd89abe"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075472Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_262_9583dbba_1343_4eaf_97c3_f067885abfcb"
      unitRef="pure">-0.0045</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075472Member_Bloomberg2028TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_263_6d646cec_0e42_4c03_9789_a98615f34768"
      unitRef="pure">0.0793</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075472Member_Bloomberg2028TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_264_cb353045_d6e9_4c55_ab89_ab9d3b3a5c9e"
      unitRef="pure">0.0458</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000075472Member"
      id="t_303_a6b8ef1d_30bd_69d2_c75b_811922cf05ae"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000075472Member"
      id="t_297_201371ad_8cf1_7037_7b62_da075823bbc3">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000075472Member"
      id="t_298_3d420507_3622_5046_3c5d_3f356187231c">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000075472Member"
      id="t_299_51174d71_3d77_ec1a_b6f8_da4d622bd988">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000075473Member"
      id="t_285_b37f4658_54ef_1609_2c30_942a5c4ff9fc"> iSHARES&#xae; iBONDS&#xae; 2029 TERM HIGH YIELD AND INCOME ETF  Ticker: IBHIStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000075473Member"
      id="t_109_b6155764_5e6c_4517_9543_85c312f38b6a">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000075473Member"
      id="t_110_ad731cc0_edb9_4e64_9a65_3ce44872675a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 2029 Term High Yield and Income ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield and other income generating corporate bonds maturing in 2029.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000075473Member"
      id="t_111_039cf135_a46f_42b8_8798_6405379b8467">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000075473Member"
      id="t_112_441de0de_4994_4231_89b6_84f2ecddfcb1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2029. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000075473Member"
      id="t_334_1a7527a2_b4a0_6691_25d8_63368de6325a">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000075473Member"
      id="t_286_73bc933a_d606_9ca9_ea38_c84076fc88c3">December 15, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000075473Member"
      id="t_333_e09bbd54_afb1_5ca4_51a6_05bdb38561f6">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_265_8b1eac06_66ea_4220_826c_ec8e429dfc88"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_266_1c8adc92_c651_4275_9f75_8a37b81f294d"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_267_4d48d210_9c12_4c88_a3aa_1b6da6fbf38a"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_268_01cfb772_b9f8_4326_b006_61bcafb93ca3"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_269_63a19dfd_2de2_419f_8e60_12718d72c5f3"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_270_b969bd54_d0cc_4c85_b0ee_3dc66ed8a1e6"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_271_5efb6a45_47e9_443b_8dbf_abfbb2248435"
      unitRef="pure">0.0035</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000075473Member"
      id="t_288_c2dd717b_c445_1c8d_5cfa_bf88458b7292">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000075473Member"
      id="t_289_11662094_6b75_4f12_184f_710a99b99f7e">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2029 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000075473Member_C000234590Member"
      decimals="INF"
      id="h_272_f8945a23_2cd9_4c8c_9970_6de5122431ac"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000075473Member_C000234590Member"
      decimals="INF"
      id="h_273_c1d2343a_bc3f_4ff6_8ad9_b8e3486efccc"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000075473Member_C000234590Member"
      decimals="INF"
      id="h_274_89e34833_8c5a_443e_8e5d_49b7b236804f"
      unitRef="USD">188</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000075473Member"
      id="t_290_9d4557a4_de30_96a0_8bd3_b770afbc7678">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000075473Member"
      id="t_291_c69a91eb_a67b_e15d_faed_6150056bb19f">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 20% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000075473Member"
      decimals="4"
      id="h_275_96cfe125_d0ef_42d2_983b_a6d9bdf81e63"
      unitRef="pure">0.20</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000075473Member"
      id="t_114_612fe386_dbff_418b_ae67_7fe1c3b28a59"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000075473Member"
      id="t_115_59db8832_1c7e_4915_a2cf_48c6c83ae69c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg 2029 Term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield and Income Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2029, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar denominated, taxable, fixed-rate, high yield (which are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered below investment-grade and commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BBB or equivalently rated (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2029 and December 15, 2029, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, the Underlying Index includes approximately 444 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities. Securities eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are selected from a universe of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, industrial, financial institutions, utilities) determined &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Bloomberg. As of October 31, 2024, a significant portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is represented by securities of companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer goods and services and industrial industries or sectors. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The components of the Underlying Index are likely to change over &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds in the Underlying Index have $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value at the time of inclusion. The non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers included in the Underlying Index consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily of corporate bonds issued by companies domiciled in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries. The Fund will invest in non-U.S. issuers to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent necessary for it to track the Underlying Index. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond included in the Underlying Index must be registered with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SEC, have been exempt from registration at issuance, or have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been offered pursuant to Rule 144A under the Securities Act of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Subject to the methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index discussed below, the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index may carry a coupon that steps-up according to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined schedule (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the interest rate paid on such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities will increase over time). Securities are market-cap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted within the Underlying Index, with a&#160;&#160;3% cap typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed on any one issuer, and a pro rata distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months before maturity, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last rebalance date on June 30, 2029. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of bonds chosen from two sub-indices,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Bloomberg U.S. High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and the Bloomberg U.S. Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), both of which are stripped of securities maturing outside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the maturity range defined above. BBB-rated bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index will be introduced to the Underlying Index under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following conditions: (1) in the last 1.5 years but before the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last 6 months of the Underlying Index&#x2019;s term, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will introduce BBB-rated bonds (which are considered investment-grade)&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as constituent high yield bonds (which are considered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade) are called, no longer qualify for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(due to, among other factors, sector reclassifications of issuers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the credit rating of bonds included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index or rebalances to maintain issuer limits), or decline in value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to a reference point set at 1.5 years from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&#x2019;s term or (2) if, prior to the last 1.5 years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining in the Underlying Index&#x2019;s term, the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield bonds in the Underlying Index declines below $30 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion, the Underlying Index will add BBB-rated bonds to maintain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a $30 billion minimum market value for the Underlying Index. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final year of the Underlying Index&#x2019;s term, any principal and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest paid by index constituents is treated as follows: (1) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the first six months of the final year, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reinvests proceeds pro-rata into the remaining bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and (2) during the last six months of the final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year, principal is not reinvested and is presumed to be held in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash while earning no interest.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds with a clean price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the price does not include accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest between coupon payments) below $60 are excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index and subject to a 3 month lock-out period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before they are eligible for inclusion again at rebalance. During &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final 1.5 years of the maturity of the index, bonds that fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below $60 at rebalance will be permanently ineligible for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the High Yield Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the Corporate Index. The bonds from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the High Yield Index must have a rating equal to or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ba1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;/&#x201d;BB+&#x201d;/&#x201d;BB+&#x201d; and above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index must have a rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (or equivalent). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider will use the middle rating of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Standard &amp;amp; Poor&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;); when a rating from only two agencies is available, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the lower is used; when only one agency rates a bond, that rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is used. In cases where ratings are not available, other sources &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be used to classify bonds by investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000075473Member"
      id="t_292_43b764f8_686f_5562_524e_da072b16f2e0"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000075473Member"
      id="t_116_22d06327_9d00_4bc1_beea_295eff06d432"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000075473Member_RiskLoseMoneyMember"
      id="t_293_161902d9_3c1b_c9e1_c41f_7e6d114de876">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_HighYieldSecuritiesRiskMember"
      id="t_294_645dc8e3_f040_fbdb_17d8_6dcd6bafbe6d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_CreditRisksMember"
      id="t_295_66d0d8d0_98bb_5e29_1064_103801ab6bde"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_IncomeRiskMember"
      id="t_296_cbfdef53_1dc3_9741_70c2_ab9cf89962d9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_MarketRiskMember"
      id="t_297_f65251c5_b433_60fe_014a_546f2b84c841"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_IndexRelatedRiskMember"
      id="t_298_21f1147d_9bef_b191_a40b_710dfb37637a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_AssetClassRiskMember"
      id="t_299_f80dd430_92a2_044e_64cd_de66d60ee539"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_AssetsUnderManagementAUMRiskMember"
      id="t_300_de9b4d4a_e92c_fe09_e793_07e196d700e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_301_f714121e_bdfa_7813_b38d_900cf30c5047"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_CallRiskMember"
      id="t_302_ce8282b0_cacb_d8bb_debc_b0193b2a4e29"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_ConcentrationRiskMember"
      id="t_303_9454d551_de96_ea24_ba78_1287d69793ed"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000075473Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_304_c6090cd5_6076_5b3a_dab5_4fe2d94a891e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000075473Member_CybersecurityRiskMember"
      id="t_305_0a58a670_29a7_a021_ba9f_51ebb6520128"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_DecliningYieldRiskMember"
      id="t_306_5b48db58_9f91_4c71_41e6_b00ab34c4c85"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_307_f3f13fa0_50bc_f141_17d0_7fa1a950c2fc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_IlliquidInvestmentsRiskMember"
      id="t_308_9fa71513_36f2_4a9e_b223_6277b853a59e"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_IndustrialCompaniesRiskMember"
      id="t_310_d7ad110c_1109_9f18_e7bc_b9c5f1380607"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_InterestRateRisksMember"
      id="t_312_c3c3998b_284f_7ae1_b5e4_53753216fa2b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_IssuerRiskMember"
      id="t_313_4ee13cb2_d644_dc6b_ec4e_017e87196ec3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_ManagementRiskMember"
      id="t_314_f479d7ca_9a4c_c95d_6cf5_0d43c2646697"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_MarketTradingRiskMember"
      id="t_309_b2a95d70_2823_a36c_90e0_20b45d51d957"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_RiskNondiversifiedStatusMember"
      id="t_311_98082483_9080_0113_6deb_2e0504d13867"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_OperationalRiskMember"
      id="t_315_95916252_1807_6b7d_1333_3700a8bc4c4a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_316_1f858176_9448_bbdf_b926_661f4c736b3b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the 1933 Act. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities typically are subject to legal restrictions on resale and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally are not traded in established public markets. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately issued securities may be deemed to be illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, may be more difficult to value than publicly traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, may be subject to wide fluctuations in value and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have higher transaction costs. There can be no assurance that a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading market will exist at any time for any particular privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued security. Difficulty in selling such securities at a desirable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time or price may result in a loss to the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_ReinvestmentRiskMember"
      id="t_317_1f11b086_5209_db1c_94c2_9c18ae6cccf8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_RiskOfInvestingInTheUSMember"
      id="t_318_0fdeb0ac_da87_7522_108c_73afd4e3c0a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_SecuritiesLendingRiskMember"
      id="t_319_c29b7447_6834_f257_1cc0_25b31ce481c3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_TrackingErrorRiskMember"
      id="t_320_934b8b76_b494_ff2b_799b_5c0c200e62d0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield securities are an investment focus may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000075473Member_ValuationRiskMember"
      id="t_321_17c116ac_ef54_4c54_82de_774dd7fae1e8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000075473Member"
      id="t_117_48b3e62a_4443_4bc6_9658_78dcd5667cea"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000075473Member"
      id="t_322_3ab9d375_247b_3131_636d_f9cdc6041b65"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000075473Member"
      id="t_325_8adf8e02_9fd4_273b_c453_a1e546edac0c">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000075473Member"
      id="t_326_55a6310e_af09_a68a_557e_471e13a11c6c">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000075473Member"
      id="t_324_02a3c034_47f4_7aa6_2020_68e6bbac8716">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000075473Member"
      id="t_323_33b881f8_6a16_785d_2e8f_39515f72731b">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000075473Member"
      id="t_327_036f15dd_56ed_f0e8_8120_588c5827cdda"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000075473Member"
      id="t_328_f883d62b_fc84_1e53_bc10_e2cffdb653db"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.41pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.41pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.79pt;"&gt;8.60%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.41pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.41pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-0.31%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000075473Member_C000234590Member"
      id="h_279_ac042d07_7668_418d_8093_fdb1205761b1">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_280_d29daff5_7bf6_47da_ab25_d68511515339"
      unitRef="pure">0.0860</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000075473Member_C000234590Member"
      id="h_281_4843e5e9_0672_44ca_b05c_1509d7f12dc4">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000075473Member_C000234590Member"
      id="h_282_11e207d0_5d10_4326_bc56_f155403b6447">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_283_e15309c1_0183_4acd_be40_edea6bbe046f"
      unitRef="pure">-0.0031</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000075473Member_C000234590Member"
      id="h_284_e115cd6e_ac70_4e75_a467_8c2b244bf6db">2023-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000075473Member"
      id="t_119_92801d9d_4b76_4853_8760_a558f0c6836f">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000075473Member_C000234590Member"
      id="t_332_19d9e658_7283_10e5_7fa5_ead576b769c9">2022-03-08</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_285_165012fd_bf87_4d0f_8f21_f65421fe6aa6"
      unitRef="pure">0.0802</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075473Member_C000234590Member"
      decimals="4"
      id="h_286_134eb6ed_1328_4312_a5ca_a0593c0a99a8"
      unitRef="pure">0.0426</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075473Member_C000234590Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_287_e4f8a284_e5e8_475c_99ef_0b3aaa4c1cb0"
      unitRef="pure">0.0511</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075473Member_C000234590Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_288_d25dae73_3108_4c1d_bb1c_aad78b15888f"
      unitRef="pure">0.0151</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075473Member_C000234590Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_289_5c348b77_1022_4864_8747_b9495c7b4cbc"
      unitRef="pure">0.0469</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075473Member_C000234590Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_290_e512aa9f_5287_44dd_bbc2_42ea3b1d73f1"
      unitRef="pure">0.0201</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075473Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_291_d8eaf5bd_1c82_4a72_b97c_6059933a5224"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075473Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_292_3ef365ce_9cc5_4f89_a72c_231df8066095"
      unitRef="pure">-0.0045</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000075473Member_Bloomberg2029TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_293_f4c531ef_1fc0_4603_a291_984f709c8227"
      unitRef="pure">0.0822</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000075473Member_Bloomberg2029TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_294_2f6cae72_7633_4b74_9da6_de5c2e4036e9"
      unitRef="pure">0.0438</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000075473Member"
      id="t_335_bc77f43e_a61c_37a2_7be4_45e95726f2b7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000075473Member"
      id="t_329_57a8b7b2_bfde_ef7f_247a_59f2dc1b08ab">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000075473Member"
      id="t_330_591ed85d_44b6_5b10_e292_4d34ddab3acb">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000075473Member"
      id="t_331_0b7b953e_d1de_503b_6663_c2bc60d46bd7">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080642Member"
      id="t_316_9277e357_2000_db9b_fceb_f0d75b75f47c"> iSHARES&#xae; iBONDS&#xae; 2030 TERM HIGH YIELD AND INCOME ETF  Ticker: IBHJStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080642Member"
      id="t_120_8f162898_67a1_418e_b174_444bd50fe7aa">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080642Member"
      id="t_121_3e3d9ad9_4bd5_4b88_8e2a_45f023b5f1f2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 2030 Term High Yield and Income ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield and other income generating corporate bonds maturing in 2030.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080642Member"
      id="t_122_f1e25402_104c_4dfa_b5cc_d32587cb432d">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080642Member"
      id="t_123_d350ad44_ce27_447f_8fc5_372375ad70ee"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2030. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080642Member"
      id="t_367_d69da79e_fce7_11bd_5918_456a8c37b08d">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080642Member"
      id="t_318_d2558140_6cf8_17bd_6dd0_fa9660904a16">December 15, 2030</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080642Member"
      id="t_366_ca33a6c8_fd80_2f36_35c8_a2f746402cf5">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_295_72b2ee72_4828_4e85_ab03_becc22d47864"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_296_c84299ae_bbd1_4689_8699_8e4d4db1dd59"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_297_7ddc19c8_edb5_4a07_ae37_bcf93ab7db56"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_298_43453dcc_62cf_48eb_b256_dd0104af5ea4"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_299_b8bc9770_c8a8_4030_9759_1a48e2533d46"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_300_ee93ec21_3ad3_4735_baf7_baa5ea238e49"
      unitRef="pure">-0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_301_cfeb89bc_4f8b_45a7_b687_b959eea0dea1"
      unitRef="pure">0.0035</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080642Member"
      id="t_319_9decaebc_009b_95c7_762b_caf846257129">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080642Member"
      id="t_320_4fdce4af_9419_0203_437c_cfc9eaa96b5d">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2030 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080642Member_C000243158Member"
      decimals="INF"
      id="h_302_c23ec83e_6ecc_4f46_811c_de524b5d9780"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080642Member_C000243158Member"
      decimals="INF"
      id="h_303_18ad5153_166a_4fd2_8658_7f6978b44378"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000080642Member_C000243158Member"
      decimals="INF"
      id="h_304_ff0765a9_ed66_4f46_ab98_4511fbbfee6a"
      unitRef="USD">197</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000080642Member_C000243158Member"
      decimals="INF"
      id="h_305_80b52c61_40c5_45a6_b028_71b82568a3a1"
      unitRef="USD">232</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080642Member"
      id="t_321_728d7ffe_6118_f310_105c_2bf1b4cea445">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080642Member"
      id="t_322_29520acf_a97e_55cf_0195_f27d334923f8">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 20% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080642Member"
      decimals="4"
      id="h_306_db0bb52a_122c_42a8_843f_ea4e2165fc48"
      unitRef="pure">0.20</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080642Member"
      id="t_125_017c1dfe_2f16_4278_a60b_86870bc05539"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080642Member"
      id="t_126_67843fb8_995d_48f5_97fe_183aa9ea9ccb"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg 2030 Term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield and Income Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2030, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar denominated, taxable, fixed-rate, high yield (which are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered below investment-grade and commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BBB or equivalently rated (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2030 and December 15, 2030, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, the Underlying Index includes approximately 209 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities. Securities eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are selected from a universe of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, industrial, financial institutions, utilities) determined &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Bloomberg. As of October 31, 2024, a significant portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is represented by securities of companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;communications, consumer goods and services and industrial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industries or sectors. The components of the Underlying Index are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to change over time. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds in the Underlying Index have $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value at the time of inclusion. The non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers included in the Underlying Index consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily of corporate bonds issued by companies domiciled in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries. The Fund will invest in non-U.S. issuers to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent necessary for it to track the Underlying Index. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond included in the Underlying Index must be registered with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SEC, have been exempt from registration at issuance, or have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been offered pursuant to Rule 144A under the Securities Act of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Subject to the methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index discussed below, the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index may carry a coupon that steps-up according to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined schedule (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the interest rate paid on such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities will increase over time). Securities are market-cap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted within the Underlying Index, with a 3% cap typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed on any one issuer, and a pro rata distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months before maturity, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last rebalance date on June 30, 2030. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of bonds chosen from two sub-indices,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Bloomberg U.S. High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and the Bloomberg U.S. Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), both of which are stripped of securities maturing outside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the maturity range defined above. BBB-rated bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index will be introduced to the Underlying Index under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following conditions: (1) in the last 1.5 years but before the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last 6 months of the Underlying Index&#x2019;s term, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will introduce BBB-rated bonds (which are considered investment-grade)&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as constituent high yield bonds (which are considered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade) are called, no longer qualify for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(due to, among other factors, sector reclassifications of issuers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the credit rating of bonds included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index or rebalances to maintain issuer limits), or decline in value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to a reference point set at 1.5 years from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&#x2019;s term or (2) if, prior to the last 1.5 years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining in the Underlying Index&#x2019;s term, the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield bonds in the Underlying Index declines below $30 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion, the Underlying Index will add BBB-rated bonds to maintain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a $30 billion minimum market value for the Underlying Index. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final year of the Underlying Index&#x2019;s term, any principal and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest paid by index constituents is treated as follows: (1) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the first six months of the final year, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reinvests proceeds pro-rata into the remaining bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and (2) during the last six months of the final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year, principal is not reinvested and is presumed to be held in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash while earning no interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds with a clean price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the price does not include accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest between coupon payments) below $60 are excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index and subject to a 3 month lock-out period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before they are eligible for inclusion again at rebalance. During &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final 1.5 years of the maturity of the index, bonds that fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below $60 at rebalance will be permanently ineligible for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities must &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the High Yield Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the Corporate Index. The bonds from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the High Yield Index must have a rating equal to or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ba1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;/&#x201d;BB+&#x201d;/&#x201d;BB+&#x201d; and above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index must have a rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (or equivalent). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider will use the middle rating of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Standard &amp;amp; Poor&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) when a rating from all three agencies is available; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when a rating from only two agencies is available, the lower is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used; when only one agency rates a bond, that rating is used. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cases where ratings are not available, other sources may be used &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to classify bonds by investment quality. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000080642Member"
      id="t_323_ca7dc53f_1e32_a4b8_6ca2_fa759d1ad8d5"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000080642Member"
      id="t_127_5510f393_c2ad_421c_bf42_53da191d41ff"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080642Member_RiskLoseMoneyMember"
      id="t_324_e68d9243_3b20_3467_59c3_1351a8eac0e6">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_HighYieldSecuritiesRiskMember"
      id="t_325_97a6f555_731c_23bd_c763_97f5eca0f9c7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_CreditRisksMember"
      id="t_326_0f055cb2_7169_657b_a425_5759fb1a1730"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_IncomeRiskMember"
      id="t_327_d0191234_32ef_ae6a_a7bf_bd531dac8d4d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_MarketRiskMember"
      id="t_329_2b2da4dc_7a24_e27c_d4ff_a5b788db8401"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_IndexRelatedRiskMember"
      id="t_331_3412f977_3ab8_aa4e_99b3_fb3cdd544476"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_AssetClassRiskMember"
      id="t_334_120a59f9_546a_710d_0c73_65679ce75c77"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_AssetsUnderManagementAUMRiskMember"
      id="t_335_4ff49e9c_d910_2e04_1733_6b492ff43a60"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_336_056b879d_4ef3_5a39_3414_89c6d37cfa2a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_CallRiskMember"
      id="t_328_fcdd60ed_7da8_cb45_2cd2_2ab82a713f32"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_CommunicationServicesSectorRiskMember"
      id="t_330_db1d34b6_066a_2d5e_2cc1_11a974fc7868"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Communication Services Sector Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;communications sector may be affected by industry competition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantial capital requirements, government regulation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyclicality of revenues and earnings, obsolescence of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;communications products and services due to technological &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advancement, a potential decrease in the discretionary income of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;targeted individuals and changing consumer tastes and interests.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_ConcentrationRiskMember"
      id="t_332_4b2dafa1_3c7c_154b_e38f_d8bd9cf2d99a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_333_ffdca52e_bfc0_88a3_fc95_8f20780614d3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_CybersecurityRiskMember"
      id="t_337_b58bf7a1_7331_a603_6aca_adf971e39602"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080642Member_DecliningYieldRiskMember"
      id="t_338_10b65c25_3255_1eba_7ba2_c86f4beb2d43"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_339_cde60463_1a94_cb39_2e3f_09145476ad19"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_IlliquidInvestmentsRiskMember"
      id="t_341_f689c788_8b8e_4031_ab7b_17884fb853ee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_IndustrialCompaniesRiskMember"
      id="t_343_2e42773b_bf5f_bbf0_6056_babb94e1fdad"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_InterestRateRisksMember"
      id="t_345_d9af21ed_1178_f8d4_46ab_eef312b2627a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_IssuerRiskMember"
      id="t_347_43e6fd5f_7c3a_1fb3_e576_b6a248154b99"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_ManagementRiskMember"
      id="t_349_4bddb663_a76e_3eec_985a_b34809008394"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_MarketTradingRiskMember"
      id="t_340_b182b3cb_7bf6_9b52_4d5f_d82011b21044"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_RiskNondiversifiedStatusMember"
      id="t_342_bc8d5cf0_02f8_e90c_068c_8014a0d3a945"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_OperationalRiskMember"
      id="t_344_613b0a55_0306_a4e7_f0c7_d078e7880e49"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_346_6e475307_a810_795f_d837_9ea38abacfb3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the 1933 Act. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities typically are subject to legal restrictions on resale and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally are not traded in established public markets. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately issued securities may be deemed to be illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, may be more difficult to value than publicly traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, may be subject to wide fluctuations in value and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have higher transaction costs. There can be no assurance that a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading market will exist at any time for any particular privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued security. Difficulty in selling such securities at a desirable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time or price may result in a loss to the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_ReinvestmentRiskMember"
      id="t_348_3b217d65_74b9_a016_955f_5586b3ec3f68"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_RiskOfInvestingInTheUSMember"
      id="t_350_28f9e1f3_5925_5c39_19ad_921fbb41ade7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_SecuritiesLendingRiskMember"
      id="t_351_eddae37f_b06a_5675_6db4_04132d0eeafe"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_SmallFundRiskMember"
      id="t_352_57a34fd0_4728_6b07_d1ce_9d96af27b321"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_TrackingErrorRiskMember"
      id="t_354_06c659bd_365f_e41e_7381_d60d99c631aa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield securities are an investment focus may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&#160;Until the Fund reaches greater scale, it may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than is typical for similar index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080642Member_ValuationRiskMember"
      id="t_353_d0fcd51b_1efb_ea08_66e2_dba99a8e9734"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080642Member"
      id="t_128_cbc04c00_1351_4724_b55b_89496437a46b"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080642Member"
      id="t_355_6c8513ba_10cc_9779_4bf4_3a4995a5f360"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080642Member"
      id="t_356_be036803_6f55_41c8_421e_ccf63bbb7e01">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080642Member"
      id="t_357_7a354501_6b0e_ea9c_c865_94a7c98497eb">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080642Member"
      id="t_358_b0a4039c_3cd6_0876_5867_afcd17a39023">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080642Member"
      id="t_359_b02dc18c_bc3b_3eea_0f8d_07f84de8385f">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080642Member"
      id="t_360_70885b87_42fc_0d7e_8de6_5fc087fb9413"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080642Member"
      id="t_361_7413437b_3ead_6a96_250d_d72840a05631"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;5.32%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-0.55%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080642Member_C000243158Member"
      id="h_310_882cf4e0_f683_46bb_9a55_e7818ca29923">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_311_c4b10c75_61e7_41dd_ad1d_1b565eefd5c5"
      unitRef="pure">0.0532</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080642Member_C000243158Member"
      id="h_312_81b2ee19_e357_483b_94bc_954f1bef139a">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080642Member_C000243158Member"
      id="h_313_bc3eede4_e249_4433_bd9b_d740faff2e25">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_314_4dfb8a33_2688_4223_9648_8d2266a7da4c"
      unitRef="pure">-0.0055</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080642Member_C000243158Member"
      id="h_315_6a37743f_b06d_4526_ad08_28a7ed8e29d3">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080642Member"
      id="t_130_eaad53f0_3b2b_4765_9f4a_e414cf2a6a48">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080642Member_C000243158Member"
      id="t_365_5e0ad395_1a8b_c34a_2ec9_9379eb6aca24">2023-06-21</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_316_82947069_def0_4e70_9331_d55a9e25e703"
      unitRef="pure">0.0726</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080642Member_C000243158Member"
      decimals="4"
      id="h_317_cbc420b1_a5d7_4044_b968_16c2949f93ff"
      unitRef="pure">0.1011</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080642Member_C000243158Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_318_01d044a4_fe4f_47b4_bdee_79fe474b1c18"
      unitRef="pure">0.0430</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080642Member_C000243158Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_319_f5af8e39_a38e_41c9_a4be_927bf2a1f4cc"
      unitRef="pure">0.0702</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080642Member_C000243158Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_320_34dba219_d1ed_4de1_a401_c245b5fcd3e9"
      unitRef="pure">0.0424</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080642Member_C000243158Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_321_9a05a11b_0d8f_4817_83d2_f35c2db5a046"
      unitRef="pure">0.0638</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080642Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_322_95bb1f2a_b171_4ace_9c55_03101f0766f0"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080642Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_323_c2c3d051_08c7_4ba1_bd63_26fecc6564cb"
      unitRef="pure">0.0360</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080642Member_Bloomberg2030TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_324_3a0a095e_7fdb_4106_9b06_8f9ef9d64349"
      unitRef="pure">0.0739</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080642Member_Bloomberg2030TermHighYieldAndIncomeIndexMember"
      decimals="4"
      id="h_325_7fca34b3_909c_4fce_b31b_7abadb080841"
      unitRef="pure">0.1029</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080642Member"
      id="t_368_386030d8_fcb3_b99d_85ca_6e94eec6100d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080642Member"
      id="t_362_042e1fa1_6793_3737_7ebf_a51708a873ff">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080642Member"
      id="t_363_4f8d6394_7177_a9e8_3d95_d6e98266680c">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080642Member"
      id="t_364_b0f97334_c9da_702c_2fc4_7d915871cf1a">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000085094Member"
      id="t_141_8a9771ed_eccb_87d5_352b_3012ff5fc9d0"> iSHARES&#xae; iBONDS&#xae; 2031 TERM HIGH YIELD AND INCOME ETF   Ticker: IBHKStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000085094Member"
      id="t_131_02fc237f_110d_4311_8e4d_510bad3f0a18">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000085094Member"
      id="t_132_ac62014f_d307_4f26_98fc_45953bac6e31"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 2031 Term High Yield and Income ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield and other income generating corporate bonds maturing in 2031.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000085094Member"
      id="t_133_5e9e2634_60df_41e5_81b4_514728dcf051">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000085094Member"
      id="t_134_147d4d07_111a_4359_b7e8_f2688c3f6ddb"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2031. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000085094Member"
      id="t_184_0c90e58e_814f_5691_891d_0e30d5274b75">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000085094Member"
      id="t_146_6f86d853_a68d_4be2_2089_3bbb39bed622">December 15, 2031</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000085094Member"
      id="t_183_794e7041_665c_dbf1_6659_b4350f93e61e">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000085094Member_C000249959Member"
      decimals="4"
      id="h_326_878f2bd2_0e1d_481d_8da0_eb9764cad1f7"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000085094Member_C000249959Member"
      decimals="4"
      id="h_327_4694a1ae_152b_4b0d_b562_e9c42d45134c"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000085094Member_C000249959Member"
      decimals="4"
      id="h_328_b681db89_6205_40fa_94ab_988f0b4a6a11"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000085094Member_C000249959Member"
      decimals="4"
      id="h_329_6e72dd64_9392_480d_809d_0c7b35f20e40"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000085094Member_C000249959Member"
      decimals="4"
      id="h_330_aef68817_cd12_4405_9ed4_ace62e31424c"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000085094Member_C000249959Member"
      decimals="4"
      id="h_331_09678823_7274_4514_9681_56c66de23da2"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000085094Member_C000249959Member"
      decimals="4"
      id="h_332_49f441c9_dbdd_4894_926b_c9ca74a2774d"
      unitRef="pure">0.0035</rr:NetExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000085094Member"
      id="t_147_0a9620c3_3bbb_cacb_8f01_e44d0257e081">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000085094Member"
      id="t_148_9c889595_4cc2_db58_0e45_8e2c1b0451f1">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000085094Member"
      id="t_142_b588f706_7d81_40ac_d4e2_c748d941d74a">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000085094Member"
      id="t_143_816df0c6_9b79_6e61_9356_68843f7101e9"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2031 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000085094Member_C000249959Member"
      decimals="INF"
      id="h_333_168f16e5_2d31_4946_a06f_bc85b43fcbce"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000085094Member_C000249959Member"
      decimals="INF"
      id="h_334_3515be48_d6d9_458f_a562_e743b100e96c"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000085094Member"
      id="t_144_64f798c0_84c4_3fd9_21ff_5f5181b68e41">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000085094Member"
      id="t_145_77326189_f029_c36b_7f6e_8a953bf63c8c">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. From inception (May 22, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 16% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000085094Member"
      decimals="4"
      id="h_335_42b8b0de_0f9b_436e_9728_a7faad2a7982"
      unitRef="pure">0.16</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000085094Member"
      id="t_136_ad9bdf42_8df6_4e4e_8abf_59eaa79f50fc"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000085094Member"
      id="t_137_e1360b88_1b82_4996_b66f_56775dbe34b8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg 2031 Term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield and Income Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2031, at which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar denominated, taxable, fixed-rate, high yield (which are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered below investment-grade and commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BBB or equivalently rated (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2031 and December 15, 2031, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, the Underlying Index includes approximately 187 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities. Securities eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are selected from a universe of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, industrial, financial institutions, utilities) determined &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Bloomberg. As of October 31, 2024, a significant portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is represented by securities of companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer goods and services and industrials industries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sectors. The components of the Underlying Index are likely to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change over time. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds in the Underlying Index have $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value at the time of inclusion. The non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers included in the Underlying Index consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;primarily of corporate bonds issued by companies domiciled in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries. The Fund will invest in non-U.S. issuers to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent necessary for it to track the Underlying Index. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond included in the Underlying Index must be registered with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SEC, have been exempt from registration at issuance, or have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been offered pursuant to Rule 144A under the Securities Act of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Subject to the methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index discussed below, the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index may carry a coupon that steps-up according to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined schedule (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the interest rate paid on such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities will increase over time). Securities are market-cap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted within the Underlying Index, with a 3% cap typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed on any one issuer, and a pro rata distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months before maturity, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last rebalance date on June 30, 2031. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of bonds chosen from two sub-indices,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Bloomberg U.S. High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and the Bloomberg U.S. Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), both of which are stripped of securities maturing outside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the maturity range defined above. BBB-rated bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index will be introduced to the Underlying Index under &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the following conditions: (1) in the last 1.5 years but before the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last 6 months of the Underlying Index&#x2019;s term, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will introduce BBB-rated bonds (which are considered investment-grade)&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as constituent high yield bonds (which are considered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade) are called, no longer qualify for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(due to, among other factors, sector reclassifications of issuers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the credit rating of bonds included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index or rebalances to maintain issuer limits), or decline in value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to a reference point set at 1.5 years from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&#x2019;s term or (2) if, prior to the last 1.5 years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining in the Underlying Index&#x2019;s term, the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield bonds in the Underlying Index declines below $30 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion, the Underlying Index will add BBB-rated bonds to maintain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a $30 billion minimum market value for the Underlying Index. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final year of the Underlying Index&#x2019;s term, any principal and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest paid by index constituents is treated as follows: (1) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the first six months of the final year, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reinvests proceeds pro-rata into the remaining bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and (2) during the last six months of the final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year, principal is not reinvested and is presumed to be held in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash while earning no interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds with a clean price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the price does not include accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest between coupon payments) below $60 are excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index and subject to a 3 month lock-out period &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before they are eligible for inclusion again at rebalance. During &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the final 1.5 years of the maturity of the index, bonds that fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below $60 at rebalance will be permanently ineligible for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities must &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the High Yield Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to be selected from the Corporate Index. The bonds from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the High Yield Index must have a rating equal to or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ba1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;/&#x201d;BB+&#x201d;/&#x201d;BB+&#x201d; and above &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The bonds from the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Corporate Index must have a rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (or equivalent). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider will use the middle rating of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Standard &amp;amp; Poor&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of S&amp;amp;P Global (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) when a rating from all three agencies is available; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when a rating from only two agencies is available, the lower is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used; when only one agency rates a bond, that rating is used. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cases where ratings are not available, other sources may be used &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to classify bonds by investment quality. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000085094Member"
      id="t_150_c14576c1_8251_1e70_9ab7_e6b20ff3ab9d"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000085094Member"
      id="t_138_71851c16_2016_4e69_89db_61a7cebb6852"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000085094Member_RiskLoseMoneyMember"
      id="t_153_018257ee_a8d5_4d70_de38_768d2395b310">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_HighYieldSecuritiesRiskMember"
      id="t_155_0b6035fb_30a5_8321_4fd1_1b83b4c86b0b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_CreditRisksMember"
      id="t_156_04ddd4c7_cb65_e7fb_e17d_bd55ca3bc9e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_IncomeRiskMember"
      id="t_157_c24517ca_b20c_5d22_f644_67b0157f3c31"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_MarketRiskMember"
      id="t_158_315c2cbc_407f_b898_4f26_a2e726ae49d8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_IndexRelatedRiskMember"
      id="t_159_548c7455_744c_0dab_b198_5889cee52276"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085094Member_AssetClassRiskMember"
      id="t_160_e76b9d34_74ec_6fdd_87a9_e17350231c72"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085094Member_AssetsUnderManagementAUMRiskMember"
      id="t_161_444a3f51_eb73_8a15_c457_ed7d428738c5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085094Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_162_1a3dc8ed_9a95_0b7d_7bbe_453585f9e6db"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085094Member_CallRiskMember"
      id="t_163_c02fa774_40d2_4575_61dc_ed9330a288f0"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_ConcentrationRiskMember"
      id="t_164_ff1aed0f_d566_2e73_9ce9_7902d7f06fee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_165_ddb485e0_d825_fa31_40b2_5834fcc4aca7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085094Member_CybersecurityRiskMember"
      id="t_166_850c7179_a015_65fd_728d_d86187eace14"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085094Member_DecliningYieldRiskMember"
      id="t_167_cd31b515_495b_9696_08e0_d49b2a3fc237"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085094Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_168_ddaf41cf_d94c_4228_5c8e_284127128bfd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_IndustrialCompaniesRiskMember"
      id="t_169_f481176a_c398_89f8_aee3_baaa9344d17f"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_IlliquidInvestmentsRiskMember"
      id="t_170_76db8dea_3b69_f326_1aff_47b82304bfaa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_InterestRateRisksMember"
      id="t_171_865eedd7_89d6_ae24_2156_afa10d669eb1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_IssuerRiskMember"
      id="t_172_601a13cd_355e_f441_d835_b0f5fd938c8c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_ManagementRiskMember"
      id="t_173_dd9f0eaa_0006_96d3_f405_ed47c0abba5e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_MarketTradingRiskMember"
      id="t_174_a7fc0952_03ca_63e4_5ee2_57d0ca1c65cf"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_RiskNondiversifiedStatusMember"
      id="t_152_7214e299_d614_7b0f_7582_e985b29c36fe"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_OperationalRiskMember"
      id="t_175_6f5eb4b6_2da6_c2ac_97af_8a9a9910773e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_176_77e3d324_29eb_6727_e3b6_ba9972a44de3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the 1933 Act. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities typically are subject to legal restrictions on resale and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally are not traded in established public markets. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately issued securities may be deemed to be illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, may be more difficult to value than publicly traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, may be subject to wide fluctuations in value and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have higher transaction costs. There can be no assurance that a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trading market will exist at any time for any particular privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued security. Difficulty in selling such securities at a desirable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time or price may result in a loss to the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_ReinvestmentRiskMember"
      id="t_177_c6f3df71_8276_c51f_5963_fc872550bb1b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_RiskOfInvestingInTheUSMember"
      id="t_178_404ed97f_a977_d631_5ce6_ec85fb925174"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_SecuritiesLendingRiskMember"
      id="t_179_e84434a2_df59_46e0_71df_cdf3db1fbea0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_SmallFundRiskMember"
      id="t_180_b0d830c9_73ba_1272_0a69_c2bd9f77a469"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_TrackingErrorRiskMember"
      id="t_181_67b6dbe8_e3ec_9410_4f07_4fb22778cd6f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield securities are an investment focus may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&#160;Until the Fund reaches greater scale, it may experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher tracking error than is typical for similar index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085094Member_ValuationRiskMember"
      id="t_182_24f51f17_7981_7a5b_5005_499e1a9c7d31"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000085094Member"
      id="t_139_83434250_7207_4a13_ae03_65dd1ee58048"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000085094Member"
      id="t_140_5377181f_eb31_4060_8237_740b4a918a31">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000085094Member"
      id="t_151_2d5da409_6b33_40bf_165b_546c46fd3363"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000048153Member"
      id="t_354_1b9c301c_7697_8602_a5f1_f4320950626a"> iSHARES&#xae; iBONDS&#xae; DEC 2025  TERM CORPORATE ETF  Ticker: IBDQStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000048153Member"
      id="t_141_aa3d8f94_7879_4460_afdf_dc6ad1cb0571">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000048153Member"
      id="t_142_b5f6497a_ada5_4e73_86a0_bf8cbab190dc"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2025 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2025.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000048153Member"
      id="t_143_e853b70c_91d7_468f_b62e_d60f80f9e2ef">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000048153Member"
      id="t_144_852bcb22_aaa6_471a_850f_c33d1a023e1b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2025. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000048153Member"
      id="t_365_4fd34ba6_6607_828c_bc17_ac2ede783d7c">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000048153Member"
      id="t_364_13c1a2f2_a31c_832d_4a93_e4ef9e434eff">December 15, 2025</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000048153Member"
      id="t_402_52e9a975_10bf_b759_60f7_b1651fadbcca">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_336_7a8a601e_7e8b_42e1_845c_165ad2018d6e"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_337_acec2740_bbcf_4a89_aff9_e00f81e26509"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_338_b4f56669_944c_4b61_8ade_18fdf7aabbee"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_339_46298e16_2d8a_4d36_bcbe_1340ab424724"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_340_f7328da0_bafd_4faf_9209_5e1acc5265e4"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_341_102091be_6a25_41ef_b75e_3b98eb9997f8"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_342_18879760_d1ab_4136_807b_dc4c67975c47"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000048153Member"
      id="t_355_7f1602c0_f2f4_9f03_b8f5_6117231d7519">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000048153Member"
      id="t_356_cf0cc2a2_8925_80b3_eb6c_cc7b9f2d075a"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2025 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <ist:ExpenseExampleMaturity
      contextRef="S000048153Member_C000152180Member"
      decimals="INF"
      id="h_343_cf85b9b1_fd6f_477e_bb27_843ad1b48d5c"
      unitRef="USD">8</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000048153Member"
      id="t_357_e9c25207_3302_340d_934b_5f3272fc9292">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000048153Member"
      id="t_358_0ea3cfb4_e087_339a_ac5d_c0fa002d51d4">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 4% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000048153Member"
      decimals="4"
      id="h_344_daebaf82_3509_4325_b5f8_2c377cc119b9"
      unitRef="pure">0.04</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000048153Member"
      id="t_146_ad8e1bd0_f919_4244_9d77_955f909245aa"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000048153Member"
      id="t_147_5abcb2e2_98b8_40b2_a6d5_73f9a3ee21db"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2025 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2025, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, investment-grade (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2025 and December 15, 2025, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and financials industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed-rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range defined above. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During the final two years of the Underlying Index, bonds that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature in 2025 but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months prior to maturity. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last rebalance date will be on June 30, 2025. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a bond that is included in the Underlying Index matures, its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund does not invest in U.S. savings bonds or other U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government bonds (except to the extent the Fund holds cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent instruments consistent with its investment objective) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and is not designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000048153Member"
      id="t_366_1367c09a_01e1_201b_c553_0b1e94a07231"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000048153Member"
      id="t_148_8fc1ebd5_66d1_4fcc_98e0_19497c57cab3"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000048153Member_RiskLoseMoneyMember"
      id="t_374_41c1331f_b648_3f88_065d_ade50cb07ae2">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_CreditRisksMember"
      id="t_375_44dd92ed_f17e_f963_a67a_5809ea0eacd7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_InterestRateRisksMember"
      id="t_376_2749c452_72d9_d2fc_c975_bc0e56009bc7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_MarketRiskMember"
      id="t_377_260f624a_7aca_4e74_993f_3a85eaba0e3d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_IndexRelatedRiskMember"
      id="t_378_80df33f4_f5f0_5500_f960_c25b49b9f88d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_AssetClassRiskMember"
      id="t_379_0728ecc8_f762_2e18_6f86_327d98cb01f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_380_156f8e8e_8ea7_23bb_91db_7f2ccd858367"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_CallRiskMember"
      id="t_381_d521bd04_c848_4e67_575d_5ebc58625292"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_CashManagementRiskMember"
      id="t_382_c499fe42_9072_4da6_9ca7_ff32e5876d2d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cash Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;If a significant amount of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets is invested in cash and cash equivalents, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform other funds that do not similarly invest in cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents for investment purposes and/or to collateralize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative instruments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_ConcentrationRiskMember"
      id="t_383_67d0e2c5_6e7e_8cba_5fff_59facb7170b0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_384_1ea6a83d_1e83_9ea2_640b_1fe6d8bb1f38"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_CybersecurityRiskMember"
      id="t_385_71de576f_67df_6639_640c_5fd939c4bc2b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_DecliningYieldRiskMember"
      id="t_386_a64a7486_9d93_3ea7_71bd_a3a00286abc6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_FinancialCompaniesRiskMember"
      id="t_387_7c0c8d26_b5e1_c347_5d22_774d0c60b42b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_388_db6ea0af_19db_ac5e_45e5_c0ae412583fb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_IlliquidInvestmentsRiskMember"
      id="t_389_9b454b6d_bbc1_4237_8e20_c1ada66674f5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_IncomeRiskMember"
      id="t_390_fd22b6c1_7290_8479_6093_bf272a7e82c2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_IssuerRiskMember"
      id="t_391_3ebca04a_8214_4f77_e5ec_97a69c08b99c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_ManagementRiskMember"
      id="t_392_25d2a089_6cac_b378_2f08_43e046ee5106"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_MarketTradingRiskMember"
      id="t_393_3b6cef73_60f7_d3eb_f3ac_cca5ba721680"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_OperationalRiskMember"
      id="t_394_e834cdb4_855e_90b5_ea99_e5c593085f87"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000048153Member_ReinvestmentRiskMember"
      id="t_395_0b195c1d_f193_aa5a_ab7b_a20e30e6d471"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_RelianceOnTradingPartnersRiskMember"
      id="t_396_082b91c0_fc2b_4a39_1ab9_a465fdd09c13"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_RiskOfInvestingInChinaMember"
      id="t_404_6bf7c7d3_17aa_b8aa_bb90_57adc03c19d6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_405_bd80cd70_cbcf_29bd_d50d_438f820bc584">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_RiskOfInvestingInTheUSMember"
      id="t_406_100e009c_62b9_baab_92e8_31ebab0c59c2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_SecuritiesLendingRiskMember"
      id="t_407_98503361_c586_b26c_ee6b_2f454b5e3873">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_TrackingErrorRiskMember"
      id="t_408_3644e3a4_efaf_5479_8fdf_3f3f037441cb">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048153Member_ValuationRiskMember"
      id="t_409_8df6090b_7b94_e6dc_ad6e_0720d58b76a9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000048153Member"
      id="t_149_d4677d3a_91f8_4472_b43c_cc004890e231"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000048153Member"
      id="t_359_761444b2_274d_5b5c_5653_4a28449fced9"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000048153Member"
      id="t_367_ccbe114d_63f4_c0c1_f7fc_c8f07b4f584f">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000048153Member"
      id="t_370_0e9f6388_cb41_c2ba_93b1_ce3c0db7430f">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000048153Member"
      id="t_369_ebac2554_cc53_5b33_4dc3_94a01f52a002">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000048153Member"
      id="t_368_1632401a_f1a7_75aa_b75f_76e9e8e7c028">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000048153Member"
      id="t_360_6e922b35_c0f2_2821_39ea_fedb706259d5"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000048153Member"
      id="t_361_f995f5db_ec59_b023_3502_2d20fb97fba9"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.41pt;"&gt;8.57%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.22%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000048153Member_C000152180Member"
      id="h_348_a24ca632_c300_4219_9a9b_cf3f6b4f2c47">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_349_37446c67_a466_4db5_aa21_95bcf45047db"
      unitRef="pure">0.0857</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000048153Member_C000152180Member"
      id="h_350_32dc11ab_7de4_4394_b82d_b7070ba0eda0">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000048153Member_C000152180Member"
      id="h_351_dff6fe42_510e_4bed_b3b2_5544003d04c6">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_352_33ce072b_02ef_47b5_b4a3_6ac54cbac180"
      unitRef="pure">-0.0422</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000048153Member_C000152180Member"
      id="h_353_2f0db15d_4a2b_4038_8107_98dcbebb719a">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000048153Member"
      id="t_151_d81aba0a_1d70_4d82_a83e_e6ea3da27665">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000048153Member_C000152180Member"
      id="t_363_2d493908_137c_a02e_098c_f77e36f73253">2015-03-11</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_354_d5dfcce6_66ec_4230_81d0_41d3afa9b510"
      unitRef="pure">0.0523</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_355_df5756ed_68cb_425f_b699_59a7900f91fb"
      unitRef="pure">0.0215</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048153Member_C000152180Member"
      decimals="4"
      id="h_356_2dcf5e1a_1269_4dae_b3d5_9aa7adce0491"
      unitRef="pure">0.0322</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048153Member_C000152180Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_357_0e544d4f_fa90_49b0_9eed_b1f2c4ce5cab"
      unitRef="pure">0.0360</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048153Member_C000152180Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_358_448bd10b_aab7_48fa_9f91_c4a234e2bb06"
      unitRef="pure">0.0100</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048153Member_C000152180Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_359_5961b414_f98d_4e82_8255_d39b27dc16a9"
      unitRef="pure">0.0192</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048153Member_C000152180Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_360_d0677dcb_68b1_4792_a0d8_caec4eb011ac"
      unitRef="pure">0.0307</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048153Member_C000152180Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_361_f2323bb5_0007_47da_bb6c_d82615edb38f"
      unitRef="pure">0.0115</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048153Member_C000152180Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_362_e072d880_113d_44f8_b8da_3d19a3d4abda"
      unitRef="pure">0.0190</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048153Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_363_607a445a_abcd_481d_af22_cc935036c100"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048153Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_364_0eef48e9_d065_42a4_b3b1_a81576971ad4"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048153Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_365_42bc5587_98e3_45ee_b3ba_a6d3a740ef1b"
      unitRef="pure">0.0168</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048153Member_BloombergDecember2025MaturityCorporateIndexMember"
      decimals="4"
      id="h_366_d7f9b282_6c16_445c_9897_226efaae5374"
      unitRef="pure">0.0528</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048153Member_BloombergDecember2025MaturityCorporateIndexMember"
      decimals="4"
      id="h_367_b280e582_b929_45f5_8a1f_0fa889eb7d52"
      unitRef="pure">0.0216</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048153Member_BloombergDecember2025MaturityCorporateIndexMember"
      decimals="4"
      id="h_368_30b66ba1_36c1_4ff7_af97_5a2a275d2567"
      unitRef="pure">0.0329</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000048153Member"
      id="t_403_800c6fa0_467f_5022_1e3c_2aef58365c3f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000048153Member"
      id="t_371_744177ef_57fc_bc7a_8d8e_992356f56e9f">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000048153Member"
      id="t_372_6e129eb4_53b7_42d8_c730_282cbbd93c10">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000048153Member"
      id="t_373_bbc60460_fc72_c418_62e7_b44d275edc4b">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000055059Member"
      id="t_388_1277c299_7a17_324a_6483_c2268da1c3a4"> iSHARES&#xae; iBONDS&#xae; DEC 2026  TERM CORPORATE ETF  Ticker: IBDRStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000055059Member"
      id="t_152_dc5acce3_a0b8_4d7b_b0e4_67239246dd24">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000055059Member"
      id="t_153_7392f93f_6721_43f2_8573_9b0682d1f9fd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2026 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2026.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000055059Member"
      id="t_154_5c617427_4897_4c23_aff3_75c17d10d303">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000055059Member"
      id="t_155_61330de0_5645_4a52_8641_2eb0d37eaeb2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2026. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000055059Member"
      id="t_402_c20ebe33_3038_1e37_d696_dc9453367f9c">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000055059Member"
      id="t_389_26d1c967_8fd4_85de_41c8_9486f1960798">December 15, 2026</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000055059Member"
      id="t_435_5d761ad6_66c6_114b_32ce_a1fa34103e37">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_369_4cca2005_3e20_4116_9d52_c7dd52fa386b"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_370_9f46b355_e9b4_4685_88b9_a727471d2e69"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_371_114e8f6e_986b_4d07_855c_43cbab33c9af"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_372_42347720_cba9_431a_9109_49019239fba3"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_373_0ae38be1_29c4_494b_9b4a_9892004e8484"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_374_0620bb7c_7527_413b_8c12_60032e7565ce"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_375_67f448f4_7f1a_4ceb_bf93_7c937eef9e73"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000055059Member"
      id="t_391_41f4a7f4_4377_45aa_75fe_0ec948173c1b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000055059Member"
      id="t_395_ce8834f8_f24d_3a4f_4260_538d1e81e2bd">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.&#x2009;Fund expenses (and any applicable waivers) are calculated only through December 15, 2026 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000055059Member_C000173141Member"
      decimals="INF"
      id="h_376_13153a2a_2063_48ab_8c60_69b7de7971c3"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000055059Member_C000173141Member"
      decimals="INF"
      id="h_377_f9c0d5bc_fae4_47bb_a1a2_39d2f30a04b3"
      unitRef="USD">19</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000055059Member"
      id="t_390_5379a673_7f69_350a_8593_9bb6db8c1291">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000055059Member"
      id="t_394_a4a68077_58bc_3245_3f6a_814c36c77796"> The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 9% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000055059Member"
      decimals="4"
      id="h_378_9ba42aa8_2f9d_43f0_a691_c26dfa5387d2"
      unitRef="pure">0.09</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000055059Member"
      id="t_157_0633c7ec_95a6_45c1_8985_21124d38794a"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000055059Member"
      id="t_158_61829252_c7f8_441f_9969_b1426ca51827"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2026 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2026, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, investment-grade (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2026 and December 15, 2026, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and financials industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed-rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range defined above. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During the final two years of the Underlying Index, bonds that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature in 2026 but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months prior to maturity. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last rebalance date will be on June 30, 2026. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a bond that is included in the Underlying Index matures, its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund does not invest in U.S. savings bonds or other U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government bonds (except to the extent the Fund holds cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent instruments consistent with its investment objective) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and is not designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; line-height: 10.45pt;"&gt;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000055059Member"
      id="t_392_53a8be26_6827_f079_bfa7_67b184b32be1"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e.,&#160;hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000055059Member"
      id="t_159_2545bb81_6391_446b_8d5d_93256b72ac81"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000055059Member_RiskLoseMoneyMember"
      id="t_407_fba3817f_3aa9_9581_3374_2bcd0499007f">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_CreditRisksMember"
      id="t_409_c1d8ab51_7f9a_794a_297a_9a86f7e529c8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_InterestRateRisksMember"
      id="t_410_2c46a021_69ae_0ae8_d3a5_10891a47b942"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_MarketRiskMember"
      id="t_411_33aa31ab_98b5_3313_c82b_bea420aa0f29"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_IndexRelatedRiskMember"
      id="t_412_cbc262e0_2f5e_2f47_4084_3c5ded98d1cb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_AssetClassRiskMember"
      id="t_413_b1a62728_2bb9_3e95_d2e2_627d235058c3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_414_7110ded4_3971_3718_7a32_7f8efd44c12a"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_CallRiskMember"
      id="t_415_e6957c34_22d2_6322_a2c2_015bab0d883d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_ConcentrationRiskMember"
      id="t_416_6ecf4c8e_13d9_2082_e2e0_2592c9243f57"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_417_a68b120b_9152_5d27_dad2_bf4bbe54676f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_CybersecurityRiskMember"
      id="t_418_cb4040dd_3aae_0001_311e_0bb726019dce"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_DecliningYieldRiskMember"
      id="t_419_85f3c33d_3d36_1c5f_e4e7_d3435f4931b6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_FinancialCompaniesRiskMember"
      id="t_420_3ae9fda8_17a6_bc9d_182e_a2ddd8dbe4b0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_421_f7327f52_67e0_e2a1_8db1_86fbb8416351"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_IlliquidInvestmentsRiskMember"
      id="t_422_67c3a177_da10_8ba5_1baa_de78a5bfffdd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_IncomeRiskMember"
      id="t_423_61f78ae2_9e1f_2c92_dbe4_454caa7054ba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_IssuerRiskMember"
      id="t_447_d32f1682_54a7_d736_0017_d41ab38aa10c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_ManagementRiskMember"
      id="t_446_71d609ce_7dbe_b16e_5cce_46a0bd60991c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_MarketTradingRiskMember"
      id="t_445_2afc497b_788e_eed7_5b0a_e9d1d4bb5bd7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_OperationalRiskMember"
      id="t_444_63f1aa38_705d_11dc_dab0_7f3c547369cd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_ReinvestmentRiskMember"
      id="t_443_910c6d40_bf2f_3124_a8da_db41dbbfdf09">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_RelianceOnTradingPartnersRiskMember"
      id="t_442_1476b519_4e51_0451_16bc_be31b8cddd73">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_RiskOfInvestingInChinaMember"
      id="t_441_2b5373a7_2cea_5962_34ff_851eb013e9ec">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_440_0b7ea81c_d4f0_9a01_2b47_c04bd3f6491b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_RiskOfInvestingInTheUSMember"
      id="t_437_8dbc8b9a_9253_0da9_2a8f_1c8f61f83c83">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_SecuritiesLendingRiskMember"
      id="t_438_d386e1f9_048e_4016_b897_c317a04d1c8e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_TrackingErrorRiskMember"
      id="t_439_f6c2208f_4a28_e5f7_3230_ab006139e1db">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000055059Member_ValuationRiskMember"
      id="t_436_f976fa29_6eb9_1242_c93b_ceb518514c28">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000055059Member"
      id="t_160_357b242c_1da9_4f40_8e44_37ea47efd8e4"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000055059Member"
      id="t_393_a0aa74ed_018b_197c_d1c8_387168b7c4c7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000055059Member"
      id="t_403_bd2f0b81_192a_6ac5_8e55_24e17ec75d1f">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000055059Member"
      id="t_406_48399c52_b244_c2b1_36fd_16433b573593">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000055059Member"
      id="t_405_cbed2227_f5ef_ed1d_774e_d3071bde33ee">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000055059Member"
      id="t_404_dae23758_2d3b_1486_709d_2f9b676d165a">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000055059Member"
      id="t_400_84e640d2_9c09_c908_ecf9_fe2cbc69fa34"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000055059Member"
      id="t_401_3a99cbff_7d7f_0402_081e_17e9ec5225e7"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.29pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.29pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.68pt;"&gt;9.20%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.29pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.29pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.18%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000055059Member_C000173141Member"
      id="h_382_5fe951bd_89f1_4b90_a8c2_c79ab52abb55">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_383_d6c285e9_5276_48ad_a520_a89527497fc1"
      unitRef="pure">0.0920</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000055059Member_C000173141Member"
      id="h_384_0dbb32de_f85a_4ad0_b092_7546053d3dae">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000055059Member_C000173141Member"
      id="h_385_9dbd54ee_6928_4e09_a2f5_db81db5be11e">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_386_f78cf8d1_6265_4caa_ab7d_afe7447ca561"
      unitRef="pure">-0.0518</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000055059Member_C000173141Member"
      id="h_387_263dad26_61b4_44b8_96b5_a9103e27c735">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000055059Member"
      id="t_162_4ed061b0_fd68_4b06_b5b1_75fe9c388113">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000055059Member_C000173141Member"
      id="t_408_738b0245_ee2a_fe3a_6564_5a3971e82c0a">2016-09-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_388_e8f7b1d3_1623_43f7_9f8d_9e60a14dac07"
      unitRef="pure">0.0507</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_389_2a8de5a3_25b1_4dc0_ba47_47468101b221"
      unitRef="pure">0.0187</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000055059Member_C000173141Member"
      decimals="4"
      id="h_390_030cf1a7_8727_4c5d_b199_c79207ea8a41"
      unitRef="pure">0.0279</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000055059Member_C000173141Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_391_701f8666_0296_46b4_ba2f_4f420604b5bf"
      unitRef="pure">0.0331</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000055059Member_C000173141Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_392_c80db62d_12f3_4a35_8114_38b528bd687c"
      unitRef="pure">0.0065</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000055059Member_C000173141Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_393_47992c99_52de_445b_847f_ed3220a0432e"
      unitRef="pure">0.0149</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000055059Member_C000173141Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_394_78c6bdd7_5c2e_4e49_af7a_84c88d394ce0"
      unitRef="pure">0.0298</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000055059Member_C000173141Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_395_b237f455_13e1_4ff2_99e1_a90d90b42bb4"
      unitRef="pure">0.0090</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000055059Member_C000173141Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_396_ce1e373d_b15c_4ca6_aefb_4f6f65c8dabe"
      unitRef="pure">0.0157</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000055059Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_397_e3df8e3e_c6fb_42c5_8e7d_8c38b4c56913"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000055059Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_398_04ae3770_d7b7_4f37_9702_0d45b1bf7284"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000055059Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_399_eecdf57d_d914_48a3_ae75_8dc9b5679d86"
      unitRef="pure">0.0134</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000055059Member_BloombergDecember2026MaturityCorporateIndexMember"
      decimals="4"
      id="h_400_aa654faa_adb6_42f5_83d0_a68b7aa1639d"
      unitRef="pure">0.0512</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000055059Member_BloombergDecember2026MaturityCorporateIndexMember"
      decimals="4"
      id="h_401_1354fb61_3a78_4198_9b53_1d6393c4964f"
      unitRef="pure">0.0195</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000055059Member_BloombergDecember2026MaturityCorporateIndexMember"
      decimals="4"
      id="h_402_b27c029f_90aa_4382_baed_9a5f4b7c5dbe"
      unitRef="pure">0.0289</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000055059Member"
      id="t_396_426def7e_8917_7d7f_7108_b3a7c01c813f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000055059Member"
      id="t_397_b0dd78d9_1af9_7531_72f3_5f5c2d0e36bc">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000055059Member"
      id="t_398_2e5ed1dc_5570_3937_816e_c9a5dbe0b26b">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000055059Member"
      id="t_399_dd006955_5f21_2bbc_ec05_ed00ef135a75">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000058301Member"
      id="t_422_d7300d12_5b72_09b7_3a0f_2dbbfa656d7e"> iSHARES&#xae; iBONDS&#xae; DEC 2027  TERM CORPORATE ETF  Ticker: IBDSStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000058301Member"
      id="t_163_c73b90c4_a4d6_4b41_86ec_b9c2892c6411">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000058301Member"
      id="t_164_4c1527ec_9462_49ec_b1ab_c0138f0d50c1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2027 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2027.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000058301Member"
      id="t_165_7c32476a_c5ad_4f07_8e6a_78729ac6cd68">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000058301Member"
      id="t_166_e71c23d0_d135_4d9b_bc19_1a5d772fc355"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2027. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000058301Member"
      id="t_423_1305af1a_5cb1_4724_abd8_3ce55cb03f68">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000058301Member"
      id="t_424_b2a40209_6ea5_cb0b_38b1_ebcc997ee446">December 15, 2027</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000058301Member"
      id="t_425_676586c2_b20d_9e69_e46a_d567d3779a56">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_403_b5624181_9089_4232_a144_46773423e1cd"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_404_6f15d6a0_92ae_47d0_9e94_269ff64a8cee"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_405_41911e15_30f7_4d50_995d_4563c0b1af0f"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_406_3ba4f7ed_2302_4f41_b9f7_b7f799300894"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_407_80e48b2d_c961_4800_8217_76bab17336ca"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_408_24c07fac_7933_4a12_adae_16e4a7dd1488"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_409_0bf09dec_a65d_403d_8221_f4b5dd50cafd"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000058301Member"
      id="t_427_0c626dc4_7341_123e_cbee_07957954bd2b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000058301Member"
      id="t_426_1763fd90_f71f_9e33_d42f_707a358f5e24">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2027 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000058301Member_C000191091Member"
      decimals="INF"
      id="h_410_1af10b66_6e14_45a4_a8bd_6dbd6e1daadb"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000058301Member_C000191091Member"
      decimals="INF"
      id="h_411_db3fd74a_7b85_4d71_b883_94d26f6b636c"
      unitRef="USD">30</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000058301Member"
      id="t_428_4e413497_0d9f_92d7_254c_669c98c24fb8">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000058301Member"
      id="t_429_971c58fd_8f52_7774_a6b3_c8224b32c677">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 12% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000058301Member"
      decimals="4"
      id="h_412_d522742f_9bdd_42ad_85b3_a4f679e86ea3"
      unitRef="pure">0.12</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000058301Member"
      id="t_168_6a583fb5_87d5_4609_bbce_cd888b749f5b"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000058301Member"
      id="t_169_a42b5652_a809_4477_a442_1eb39e272a6a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2027 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2027, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, investment-grade (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2027 and December 15, 2027, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and financials industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed-rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range defined above. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During the final two years of the Underlying Index, bonds that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature in 2027 but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months prior to maturity. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last rebalance date will be on June 30, 2027. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a bond that is included in the Underlying Index matures, its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; line-height: 10.45pt;"&gt;&#160;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000058301Member"
      id="t_430_8b8a18d0_95b5_a072_d56f_e764b130a064"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e.,&#160;hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000058301Member"
      id="t_170_75a71e9c_0a24_4685_9bdd_7d6a1b3f3568"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000058301Member_RiskLoseMoneyMember"
      id="t_443_8b555f8e_0f95_e280_29bd_b99adbb2179c">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_CreditRisksMember"
      id="t_444_cb524eb7_4a38_c00f_119e_4d466713fdb8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_InterestRateRisksMember"
      id="t_445_1a65e6ee_bcc9_8354_ac64_a94eb28b85c8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_MarketRiskMember"
      id="t_446_0cf6f085_c3fe_2f93_ffab_a1d15c0f3a7f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_IndexRelatedRiskMember"
      id="t_447_b521df55_519b_708f_44f3_ea76b6ca4656"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_AssetClassRiskMember"
      id="t_448_ad9ff7cf_f18d_ac39_a0e4_02113ceccd29"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_449_ee5640bb_bd81_10ad_a5a8_7b26b0e20953"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_CallRiskMember"
      id="t_451_abc1fe61_171d_70e8_a1ec_bd5acdea8c37"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_ConcentrationRiskMember"
      id="t_452_cda3ff45_14d1_16dd_ab35_c634fc005958"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_454_e098ca77_87e7_c48a_975c_ac43f2e46a72"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_CybersecurityRiskMember"
      id="t_455_62c6b938_4aea_d4e6_412d_fc62e3e4cd26"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_DecliningYieldRiskMember"
      id="t_457_17feb6a7_ddb2_fa66_9415_207970456894"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_FinancialCompaniesRiskMember"
      id="t_458_0723c6c7_b3fc_e2d0_0664_e4f420276aa7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_450_007498ec_1604_6107_2b00_57bcbe82ce96"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_IlliquidInvestmentsRiskMember"
      id="t_453_08774cff_469e_4dce_db8b_f76a3ecf85a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_IncomeRiskMember"
      id="t_456_c3f9c858_5734_eb2d_54f8_42debe924f07"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_IssuerRiskMember"
      id="t_459_31be5a9b_2ba8_c5c1_fd6a_52c846c83ea1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_ManagementRiskMember"
      id="t_460_c37daea5_5439_8d5b_cd49_1e83e6f67fc5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_MarketTradingRiskMember"
      id="t_461_a5ecba33_3501_6e5c_6ee6_57b8f6dd188e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_OperationalRiskMember"
      id="t_462_b17d9c68_024d_63fc_07e7_d92e0080b79c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000058301Member_ReinvestmentRiskMember"
      id="t_463_1a296184_e0f9_dd4c_2ccb_c562d74152ca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_RelianceOnTradingPartnersRiskMember"
      id="t_464_c863b339_e690_baa7_e1a7_8aa7f8dad5f6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_RiskOfInvestingInChinaMember"
      id="t_465_fe34a5e4_a251_993a_cbf3_b42024bff683">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_466_2812a881_c833_7ac0_eff9_a934073525fe">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_RiskOfInvestingInTheUSMember"
      id="t_467_7eb15fc5_e3b9_7037_1ca0_b0c55a345a01">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_SecuritiesLendingRiskMember"
      id="t_468_1b5cf83f_fd01_b2c6_e96b_6459bf1a551d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_TrackingErrorRiskMember"
      id="t_469_e6d153ec_fae0_c1ae_ec9e_3b9543d37664">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000058301Member_ValuationRiskMember"
      id="t_470_98d7b54e_bb2a_dd70_d9d9_83b9ace395d7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000058301Member"
      id="t_171_418c0919_036f_407b_90ef_99309b68ff58"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000058301Member"
      id="t_431_f78430ac_5b7b_aa5a_bec7_d7263c7336ec"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000058301Member"
      id="t_432_59aae2ef_ae5d_48a6_d985_0d9399c0dd1c">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000058301Member"
      id="t_433_31818694_bf41_9646_b7d2_cb3d2b677b14">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000058301Member"
      id="t_434_96597486_1c05_97e8_756e_51478b4037a6">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000058301Member"
      id="t_435_f7001536_cb0a_1ec1_d358_b682d606803d">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000058301Member"
      id="t_436_87b3de92_8b78_5be6_8dc9_18fd5f2f4219"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000058301Member"
      id="t_437_c3bba613_26b0_d2ce_c908_e85690129f0a"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 26.37pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 26.37pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;10.54%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 26.37pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 26.37pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.37pt;"&gt;-5.78%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000058301Member_C000191091Member"
      id="h_416_2f7831b2_2091_48f7_ac3e_11446b9a5363">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_417_d55765a6_bff8_4779_86ee_e34675a08f3f"
      unitRef="pure">0.1054</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000058301Member_C000191091Member"
      id="h_418_958959a8_d116_41cf_8e10_86984d785cfc">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000058301Member_C000191091Member"
      id="h_419_f4108cea_b6df_416a_858d_835d61008dfa">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_420_69d75aa3_09ec_4632_8a92_9b41dad30288"
      unitRef="pure">-0.0578</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000058301Member_C000191091Member"
      id="h_421_f066e37b_3c55_4ffe_96ad_c9e8fc5f313d">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000058301Member"
      id="t_173_21b966f6_677b_4455_959e_b4f0a5cac5d4">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000058301Member_C000191091Member"
      id="t_442_e34265f1_0274_304f_9006_74468d3c75b9">2017-09-12</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_422_29a5dd0a_46f0_47e9_80ce_5d928c248411"
      unitRef="pure">0.0476</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_423_9932fa8c_886d_42cb_8878_6a828c0e6d7c"
      unitRef="pure">0.0167</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000058301Member_C000191091Member"
      decimals="4"
      id="h_424_4566fbd7_cb07_4c4d_ae47_d233ca55d6e2"
      unitRef="pure">0.0282</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000058301Member_C000191091Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_425_08d73fe6_c312_4c55_adde_568c69f5be50"
      unitRef="pure">0.0291</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000058301Member_C000191091Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_426_decc8f8d_8428_4682_b419_d5f833706f09"
      unitRef="pure">0.0036</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000058301Member_C000191091Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_427_f60a290d_9690_4ada_9621_70b7abbae771"
      unitRef="pure">0.0144</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000058301Member_C000191091Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_428_94252db6_4525_448d_8701_686237f969d1"
      unitRef="pure">0.0279</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000058301Member_C000191091Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_429_2b00e03e_dc70_4fcc_9545_690f1c804c6b"
      unitRef="pure">0.0071</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000058301Member_C000191091Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_430_42895ce9_a0e0_46aa_bbc4_f905419853da"
      unitRef="pure">0.0156</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000058301Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_431_e4413fce_7648_471a_8c12_259e5b7af7a4"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000058301Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_432_da518757_56dc_4eb1_9aee_89e69c403856"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000058301Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_433_c0f60712_e2fd_4ca1_909b_4082d1cd5e2a"
      unitRef="pure">0.0125</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000058301Member_BloombergDecember2027MaturityCorporateIndexMember"
      decimals="4"
      id="h_434_a99e2543_57ca_46c1_af69_206760869b3e"
      unitRef="pure">0.0473</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000058301Member_BloombergDecember2027MaturityCorporateIndexMember"
      decimals="4"
      id="h_435_fb59b802_1466_4650_a04a_0cfebcd1a722"
      unitRef="pure">0.0172</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000058301Member_BloombergDecember2027MaturityCorporateIndexMember"
      decimals="4"
      id="h_436_e13b9dce_790d_4558_a201_5f58846ba655"
      unitRef="pure">0.0287</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000058301Member"
      id="t_438_9edf3e67_a726_a890_9045_7b6a196ad298"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000058301Member"
      id="t_439_7a683b39_5443_63e3_3ed7_d78e7da84845">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000058301Member"
      id="t_440_da57b353_f3a7_8e8e_10c4_8e6c7a2a57cb">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000058301Member"
      id="t_441_3f90b740_f10b_27a5_acf2_9c616237d372">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000063041Member"
      id="t_457_ae37acd5_6180_e416_f5ce_53a0ad907c8b"> iSHARES&#xae; iBONDS&#xae; DEC 2028 TERM CORPORATE ETF  Ticker: IBDTStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000063041Member"
      id="t_174_d5269363_106f_45b6_a840_78f612f4eca0">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000063041Member"
      id="t_175_c00f8dd5_8524_46d7_8085_8af4baa98976"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2028 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2028.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000063041Member"
      id="t_176_fafb05c0_db85_42a1_a3f0_450e9fd6d939">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000063041Member"
      id="t_177_7fcfd845_2f26_463f_8f7d_8f24bba9783a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2028. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000063041Member"
      id="t_458_02a62618_8472_316c_f9af_993e4716f18f">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000063041Member"
      id="t_459_c68b8c87_080f_9158_7bce_12e5479f6f7e">December 15, 2028</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000063041Member"
      id="t_460_37c77140_d873_7142_f7c1_8bbd41731ed0">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_437_9ed37e5f_ce1f_46bb_b76f_7dfdd022206f"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_438_b9b8bd5b_be9d_4cac_b396_f9287e31e027"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_439_5c76671b_e080_4597_9ba0_70405a712b7c"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_440_66b3ffb6_0748_4b38_80f2_260d35f5d54c"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_441_11947135_bb9c_4a7c_b3e6_873f87c9bd13"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_442_aee91e6c_1065_41ec_ba23_3b080f0bccfd"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_443_632634ff_ef25_46dd_873e_f395b362c06f"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000063041Member"
      id="t_461_320a45a6_dbcc_6430_0157_4c61bac54e26">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000063041Member"
      id="t_462_e82159f0_162f_178d_2afe_b5ac906c7314">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2028 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000063041Member_C000204503Member"
      decimals="INF"
      id="h_444_6d5b1051_f7a3_4c05_919b_d4ac5485bf42"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000063041Member_C000204503Member"
      decimals="INF"
      id="h_445_eb0fec70_2756_482e_afed_645ef7db32de"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000063041Member_C000204503Member"
      decimals="INF"
      id="h_446_a083b2e7_a39f_4540_83f2_dc9f09c69179"
      unitRef="USD">42</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000063041Member"
      id="t_463_596726ee_e591_0e6a_b2b6_e273f0e49545">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000063041Member"
      id="t_464_b269f00c_0741_665b_50e5_0314ccdaaa76">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 3% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000063041Member"
      decimals="4"
      id="h_447_cb4efe65_ebf4_432f_bc38_36038b684146"
      unitRef="pure">0.03</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000063041Member"
      id="t_179_12d1e759_b3bb_4db7_aaf4_23723df65562"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000063041Member"
      id="t_180_c304b7a7_2930_446e_9cbc_a24a4d4b2989"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2028 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2028, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, investment-grade (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2028 and December 15, 2028, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and financials industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed-rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index.&#160; In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range defined above. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During the final two years of the Underlying Index, bonds that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature in 2028 but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months prior to maturity. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last rebalance date will be on June 30, 2028. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a bond that is included in the Underlying Index matures, its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000063041Member"
      id="t_465_ad18855e_024b_1cb9_14ee_199f39d019ee"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000063041Member"
      id="t_181_65558012_e336_4d68_a20d_47f179798ea5"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000063041Member_RiskLoseMoneyMember"
      id="t_466_83104ed2_c76e_30b8_89af_fbd06b101c7b">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_CreditRisksMember"
      id="t_467_a894d98b_714c_06c6_86ca_fd415217cc02"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_InterestRateRisksMember"
      id="t_468_77ff9ee3_537a_ddf8_e52a_68c700a213f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_MarketRiskMember"
      id="t_469_0e9596b7_0f1a_acb0_4b3f_e6450abafd50"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_IndexRelatedRiskMember"
      id="t_470_85a42996_c296_2c24_f0a9_3e7cdf78b01e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_AssetClassRiskMember"
      id="t_471_212e62b7_169b_27f3_be3b_dca99269ec9f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_472_a9f3f2d8_89e5_1ede_e2ad_9b6368ecc393"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_CallRiskMember"
      id="t_473_46f7ed20_92fe_12c6_67d6_fce3bc2dc074"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_ConcentrationRiskMember"
      id="t_474_75a12a4d_50e4_d1c3_1f76_d6d79c842c49"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_475_70297b2b_6364_57f0_0830_b043cf4968ef"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_CybersecurityRiskMember"
      id="t_476_8c4be4ba_a0a1_2e50_0e6d_bc704ec85cb4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_DecliningYieldRiskMember"
      id="t_477_e68ffc1c_8d82_ea14_bfee_ba6fe5bcf485"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_FinancialCompaniesRiskMember"
      id="t_479_99b86185_5aa6_12fa_5e0e_fb3f9d8a8a5b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_480_0b117f2d_3625_a221_a3bf_5f673bd6fecb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_IlliquidInvestmentsRiskMember"
      id="t_481_552a218b_ec2e_b09c_8225_1156eecf6e79"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_IncomeRiskMember"
      id="t_482_6b176656_1858_73f1_5daa_84cb8d2271a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_IssuerRiskMember"
      id="t_478_86a0d2d0_e453_4afe_4a31_bd2d48a44ee1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_ManagementRiskMember"
      id="t_483_75aef27c_26e4_e072_a8e0_132d95c9cbb5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_MarketTradingRiskMember"
      id="t_484_1a31dfb6_2457_72cc_3944_2c56de27f720"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063041Member_OperationalRiskMember"
      id="t_485_95e59caa_b639_d87d_37e1_28b8c0a25f5f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063041Member_ReinvestmentRiskMember"
      id="t_486_3f5fbd83_56fd_2471_836d_a36993d745e8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_RelianceOnTradingPartnersRiskMember"
      id="t_487_88c06107_810a_3317_4c07_250a21fc6ff9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_RiskOfInvestingInChinaMember"
      id="t_505_ccf96dae_dc7a_534f_a7e5_6389c5933ceb">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_506_f4f012a8_cb36_9315_2f34_f4582936d9a8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000063041Member_RiskOfInvestingInTheUSMember"
      id="t_507_f3630ed3_b8dd_8e0d_a44e_2b71f37aaf58">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_SecuritiesLendingRiskMember"
      id="t_508_d344951d_f0e1_71af_8b46_c6c77e8b67dd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_TrackingErrorRiskMember"
      id="t_509_65905a0c_b67b_a06f_1f21_668be43f543a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063041Member_ValuationRiskMember"
      id="t_510_7643f543_2212_dc1d_f1a8_d80bd679a85e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000063041Member"
      id="t_182_f95ccdbb_960e_4684_8800_0c3599de0f93"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000063041Member"
      id="t_493_1b26a936_faea_97c8_e817_ebe083020cf0"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000063041Member"
      id="t_494_ac1c4b3c_497d_a9fe_894b_fe85ebd68108">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000063041Member"
      id="t_495_d3ac97f7_c3c0_eda0_c6bd_fb59caa6fd92">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000063041Member"
      id="t_496_bbe9cd07_8541_23a1_595e_ab82003056e7">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000063041Member"
      id="t_497_5ccdc2ff_3b8e_207f_e74e_0275fd47a3dd">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000063041Member"
      id="t_498_c580b8e9_f9d8_17bc_50d3_18e04e65b41a"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000063041Member"
      id="t_499_ba38bf6f_6de8_4b71_08fc_0d85dd2d137b"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 26.32pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 26.32pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;10.89%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 26.32pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 26.32pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.09pt;"&gt;-6.61%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000063041Member_C000204503Member"
      id="h_451_be643a42_c238_4657_ac80_c78caa88ff1f">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_472_4843b996_cd10_e5c7_5f88_26542a3a70bf"
      unitRef="pure">0.1089</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000063041Member_C000204503Member"
      id="h_453_4a701dbc_5524_4f58_a8c4_b9b8f0414b98">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000063041Member_C000204503Member"
      id="h_454_6097313a_b5a4_44e0_9d0f_6222e29a4ad1">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_455_2c267954_8561_45a5_8934_d8e2484006fb"
      unitRef="pure">-0.0661</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000063041Member_C000204503Member"
      id="h_456_bf63114d_6371_48a8_8a3d_7a09026b36fc">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000063041Member"
      id="t_184_6a2cd3b5_0b7f_4e59_ab01_437f9e55796e">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000063041Member_C000204503Member"
      id="t_504_c3e4c434_c1ec_c7cf_0258_e141b570c913">2018-09-18</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_457_f89aa00a_1a8c_4d4c_b755_230d51338360"
      unitRef="pure">0.0417</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_458_c9ed90c6_94fc_4d9f_8ffc_1c3e38bbf632"
      unitRef="pure">0.0136</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063041Member_C000204503Member"
      decimals="4"
      id="h_459_aa63d58b_648b_4257_9e89_5015ffaf7fac"
      unitRef="pure">0.0353</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063041Member_C000204503Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_460_f891f1a7_3c8a_4b09_83a1_359245e81abc"
      unitRef="pure">0.0221</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063041Member_C000204503Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_461_1ec8f836_d5c5_47ea_a107_471ecb18a2e4"
      unitRef="pure">-0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063041Member_C000204503Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_462_44caa3ca_6b97_4fa7_84f0_0c986314c2cb"
      unitRef="pure">0.0205</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063041Member_C000204503Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_463_f0fbf99a_cf86_41cd_b3df_dc654a4da425"
      unitRef="pure">0.0244</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063041Member_C000204503Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_464_c1a13146_d623_4f9e_b2e1_8e6481d20832"
      unitRef="pure">0.0043</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063041Member_C000204503Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_465_9a262f0c_b9fb_422e_bc29_3ba5d58e269d"
      unitRef="pure">0.0208</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063041Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_466_b2485319_5818_4d88_be5b_1a1d153f25ef"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063041Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_467_8f934510_40d9_43ac_9b00_dd83acecf51a"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063041Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_468_d202111a_a31e_4081_b78e_f0440ef42da6"
      unitRef="pure">0.0170</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063041Member_BloombergDecember2028MaturityCorporateIndexMember"
      decimals="4"
      id="h_469_b58f7968_1620_4cf9_b0ac_39412c47393a"
      unitRef="pure">0.0415</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063041Member_BloombergDecember2028MaturityCorporateIndexMember"
      decimals="4"
      id="h_470_ada147b0_fd59_4bca_8fd5_fd12ccf1140a"
      unitRef="pure">0.0140</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063041Member_BloombergDecember2028MaturityCorporateIndexMember"
      decimals="4"
      id="h_471_bad88375_84d9_4937_a278_198fba02d579"
      unitRef="pure">0.0357</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000063041Member"
      id="t_500_23a989b4_ce10_305c_024c_5f5a187ef131"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000063041Member"
      id="t_501_3e4670d0_ad8d_743a_111f_d1732e726f2a">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000063041Member"
      id="t_502_65d5e20f_ccd0_3020_36b9_bb6eaf504d63">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000063041Member"
      id="t_503_e3378fa2_2179_5c07_8006_7a707f8395ef">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000066401Member"
      id="t_519_574dbbb9_3bb1_0b67_02c5_c233509df976"> iSHARES&#xae; iBONDS&#xae; DEC 2029 TERM CORPORATE ETF  Ticker: IBDUStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000066401Member"
      id="t_185_a11cbff2_6af3_435c_93a4_6f022f1cfc4b">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000066401Member"
      id="t_186_c9dda1e5_1af2_497c_a480_096ba9e06fa5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2029 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2029.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000066401Member"
      id="t_187_a80c97ef_fe51_48ce_bdf3_bc52111ccb3e">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000066401Member"
      id="t_188_e825ca71_84d7_4eeb_bb1f_8d7c76036a3c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2029. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000066401Member"
      id="t_538_24696e26_acca_7da5_acc7_e309c3d1b701">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000066401Member"
      id="t_537_53790527_66e0_119d_2aa5_efb4e075f2b9">December 15, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000066401Member"
      id="t_520_ec1af5cf_c111_6b9c_1bae_7ce570432d61">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_472_1338e157_f749_4f4b_80b3_756fb9dbc306"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_473_0c038210_fa80_4492_91fd_7c5b80d6d913"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_474_c4a2d9f8_bdb7_4bfa_aed0_b729a610767c"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_475_a597967d_c43b_4073_a40b_c405227d8e14"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_476_48a3be99_c174_4553_a317_47d23132ddb7"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_477_09e94cac_47fe_4f21_9ac7_fe4b95a98686"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_478_74a3c256_832a_448c_a771_954b943054a3"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000066401Member"
      id="t_521_a9cb3042_2557_6975_7f05_99eba0945a74">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000066401Member"
      id="t_522_9dbbb753_fb03_b26b_f09a_829ddfe1f8ca">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2029 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000066401Member_C000214263Member"
      decimals="INF"
      id="h_479_0355953a_244c_4162_8a3e_a3536b3b60a8"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000066401Member_C000214263Member"
      decimals="INF"
      id="h_480_7e815327_1e8e_464b_90ac_b21bc5ca29e4"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000066401Member_C000214263Member"
      decimals="INF"
      id="h_481_fe873a2b_524b_4bb1_9d9d_1abb2148f068"
      unitRef="USD">54</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000066401Member"
      id="t_523_82129718_d870_0290_5911_649b73a40bc8">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000066401Member"
      id="t_524_b1468194_ad18_72bd_bcde_d24714c67646">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 21% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000066401Member"
      decimals="4"
      id="h_482_719332b7_9b26_40f1_8bc2_921866fce63a"
      unitRef="pure">0.21</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000066401Member"
      id="t_190_6988c1a8_1a75_44e5_a513_5335d07ed14e"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000066401Member"
      id="t_191_24b9c242_6a3a_46a0_9763_7484bb33d4ba"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2029 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2029, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, investment-grade (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2029 and December 15, 2029, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and financials industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed-rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. During the final two years of the Underlying Index, bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that mature in 2029, but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity, will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until six months prior to maturity. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;last rebalance date will be on June 30, 2029. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a bond that is included in the Underlying Index matures, its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000066401Member"
      id="t_525_3aba1cbb_ceae_2fea_a2fe_2012a8547d98"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000066401Member"
      id="t_192_033f00a2_12ba_4ef9_b9d7_a31b9102fc93"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000066401Member_RiskLoseMoneyMember"
      id="t_493_091fd8ab_167a_a37c_3f13_711d27abcb9d">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_CreditRisksMember"
      id="t_494_d730ecc2_84c3_2619_e0e2_cc923fa28890"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_InterestRateRisksMember"
      id="t_495_7f444553_00dd_9429_a080_fc65ccc56d6f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_MarketRiskMember"
      id="t_496_ad50a12a_9e1a_f3f9_33e8_142868a40663"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_IndexRelatedRiskMember"
      id="t_497_4640d895_046a_9c79_f780_d5096c85abd1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_AssetClassRiskMember"
      id="t_498_9b4d7a95_db40_63a0_8f28_5e4860540a38"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_499_dc47ca38_c878_9140_27be_805eedd44844"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_CallRiskMember"
      id="t_500_363b19f3_ff50_2f9c_ad23_777f00e87ddc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_ConcentrationRiskMember"
      id="t_501_bf1eeff6_bd51_ef5e_f505_629809cdfe6b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_502_ff033478_b328_f332_f2f9_a4fe0078cc27"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_CybersecurityRiskMember"
      id="t_503_efbb5da7_0eec_de94_2ea4_2a432c13f1cb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_DecliningYieldRiskMember"
      id="t_504_b63368ef_8445_f44e_e3f6_2e4097700bd9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_FinancialCompaniesRiskMember"
      id="t_505_806f04ed_e4d1_c93d_c77f_6b76887bdb69"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_506_3cc4dfb2_a512_9d90_5228_281e7f040404"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000066401Member_IncomeRiskMember"
      id="t_507_bed57196_5663_b0df_e599_18e5066a8353"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_IssuerRiskMember"
      id="t_508_46a39d47_2834_a6ca_efae_ab891474d1f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_ManagementRiskMember"
      id="t_509_fd00249c_222c_873e_5fb4_e162be4b4e45"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_MarketTradingRiskMember"
      id="t_510_8c0b83e2_7fb6_ca57_d520_4e7a3cbcfaac"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_OperationalRiskMember"
      id="t_511_c9f520a4_c3e3_20da_50cd_bc6172d2ab4f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_ReinvestmentRiskMember"
      id="t_512_6a56e720_71ca_9d76_3b4d_2c09f4d355d8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_RelianceOnTradingPartnersRiskMember"
      id="t_513_1a3f8058_7db8_907e_70c0_6251cef351d4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_RiskOfInvestingInChinaMember"
      id="t_539_83a8842d_ad30_c549_8cb3_53e9efd2af7b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_540_f5fbebb6_d714_2391_4244_0b15b558f60b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_RiskOfInvestingInTheUSMember"
      id="t_541_194072fb_b421_0dc1_6ca8_cbab462ced8c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_SecuritiesLendingRiskMember"
      id="t_542_4e989bdd_d780_c100_6e92_44dfe8812736"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_TrackingErrorRiskMember"
      id="t_543_4d9cb14c_c54e_bfdc_b02e_94c4bc2544c1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000066401Member_ValuationRiskMember"
      id="t_544_a979b2d7_3e21_eef2_2be0_aa408ed1cd60"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000066401Member"
      id="t_193_9de14d76_f679_4ab9_b897_be9e6d132f76"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000066401Member"
      id="t_526_9d72995d_34f6_ac71_78b6_7d58d8226e1d"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000066401Member"
      id="t_527_39d0c90f_0358_a013_605a_e54f691c1999">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000066401Member"
      id="t_530_b5aaecc8_3884_df53_ceb7_b039df0a0f54">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000066401Member"
      id="t_529_64c14b2d_5216_0821_0c0b_504a423d7899">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000066401Member"
      id="t_528_6defe2ec_71c0_8807_8c50_79405214906d">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000066401Member"
      id="t_531_c5304277_c302_083d_2076_0e4d6b90a1fc"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000066401Member"
      id="t_532_1e96429c_ffef_a43d_18dd_0fdba1d1c8b2"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.53pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.53pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;11.34%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.53pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.53pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.25pt;"&gt;-6.41%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000066401Member_C000214263Member"
      id="h_486_6e686be3_2b3a_4b35_8a76_fab63bff486f">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_487_17168e07_9c76_4070_8105_14075664691a"
      unitRef="pure">0.1134</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000066401Member_C000214263Member"
      id="h_488_92fb0f9a_e868_4dcb_8ea9_98ed49ea2f84">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000066401Member_C000214263Member"
      id="h_489_df6172cf_fd02_4bae_a431_1afaa1ca9b4c">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_490_59af5b6d_ebe6_46de_b20a_e86d02927c1b"
      unitRef="pure">-0.0641</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000066401Member_C000214263Member"
      id="h_491_0fa8db8a_ab93_4b04_9773_3aa95365552f">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000066401Member"
      id="t_195_d08f72e2_6377_4e37_aa92_9004f0f9c3f9">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000066401Member_C000214263Member"
      id="t_492_62760db4_0446_2bf1_1b28_8cb62228c8b4">2019-09-17</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_492_3894ae53_d29e_484c_9db6_8ad77b459c0c"
      unitRef="pure">0.0381</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_493_e4110e30_4e45_4968_b6f4_86d60cea8fe5"
      unitRef="pure">0.0119</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066401Member_C000214263Member"
      decimals="4"
      id="h_494_139906fe_436b_422a_840c_76761256557d"
      unitRef="pure">0.0162</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066401Member_C000214263Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_495_20b75c0b_a2d0_427a_88af_01e9e8270451"
      unitRef="pure">0.0182</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000066401Member_C000214263Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_496_b957f0d7_d1f7_44b3_aa8e_8fcc12a92b91"
      unitRef="pure">-0.0021</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066401Member_C000214263Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_497_f28c3d9a_78d9_40a8_b086_a4e350061cd0"
      unitRef="pure">0.0024</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066401Member_C000214263Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_498_c70ec56a_6cbe_4656_82cb_b334b1e0d2e8"
      unitRef="pure">0.0223</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000066401Member_C000214263Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_499_5ee25505_97d4_4472_bf29_f0a216798e9a"
      unitRef="pure">0.0031</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066401Member_C000214263Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_500_98fd1821_da23_4ffa_8739_042f87d4450f"
      unitRef="pure">0.0065</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066401Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_501_d72e3485_d762_4eea_8dc2_3b161fd09f71"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000066401Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_502_fd89b298_7864_4933_bdf1_aa5fe3264010"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066401Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_503_fb93e75e_d452_419f_984b_1616f6155782"
      unitRef="pure">0.0028</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000066401Member_BloombergDecember2029MaturityCorporateIndexMember"
      decimals="4"
      id="h_504_bcbcbf4e_e509_4e7b_b27f_9d23828908a4"
      unitRef="pure">0.0372</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000066401Member_BloombergDecember2029MaturityCorporateIndexMember"
      decimals="4"
      id="h_505_70530272_e689_4dc5_a8f0_583928e3d7ea"
      unitRef="pure">0.0127</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000066401Member_BloombergDecember2029MaturityCorporateIndexMember"
      decimals="4"
      id="h_506_d7ca1a6a_4798_4a27_8dc3_6106746ba676"
      unitRef="pure">0.0166</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000066401Member"
      id="t_533_9e45da06_904d_6bed_218a_33e084acccd8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000066401Member"
      id="t_534_2ea822c4_d41b_2abe_c43c_add6443ab377">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000066401Member"
      id="t_535_5ef60eb5_7f85_ddce_2f24_2afd0e1fe54b">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000066401Member"
      id="t_536_a06cc1de_9959_54b2_59b4_d80d3c542e10">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000068777Member"
      id="t_554_00f4647a_0333_a5e0_1d61_ee5d17820cd8"> iSHARES&#xae; iBONDS&#xae; DEC 2030 TERM CORPORATE ETF  Ticker: IBDVStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000068777Member"
      id="t_196_21f5a80f_854e_4970_9053_40a38410d62d">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000068777Member"
      id="t_197_58d104f1_30e4_4ded_876e_3268e572263b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2030 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2030.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000068777Member"
      id="t_198_05947dbe_3622_4ad5_9e85_dd3ac446cb31">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000068777Member"
      id="t_199_0ba5c24e_4c11_4889_a5ed_7d779321ec74"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2030. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000068777Member"
      id="t_572_640a974e_7c86_06a6_49a0_ba7f497beb96">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000068777Member"
      id="t_573_b9ae7a52_cb04_c023_ed6c_25fa67b19729">December 15, 2030</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000068777Member"
      id="t_555_fa5e24da_1800_250b_587d_89dd7adc9612">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_507_05142163_ddb5_410b_a9a0_5a1c8144a8f8"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_508_a1e5960f_05f7_4518_ac79_7c70dee41934"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_509_156c233c_b14e_44f1_8140_44a48383afdb"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_510_0a44e9c6_e617_44d4_a799_e2289eeb0ba2"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_511_1cc203b1_d3ac_432a_927b_ac4cd801f7d2"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_512_2af6b863_4514_4bcf_b01d_aa69b6a611ad"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_513_4ded33b7_1126_4783_a598_043b608935a7"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000068777Member"
      id="t_556_0ed9a85d_06cd_2e02_fbcd_7f547d88492e">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000068777Member"
      id="t_557_2c4e3aa5_2166_c801_37f9_a976f0560f72">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2030 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000068777Member_C000219751Member"
      decimals="INF"
      id="h_514_0358ff24_05ba_410d_9748_f35b34199c59"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000068777Member_C000219751Member"
      decimals="INF"
      id="h_515_134a1d5b_b5bf_4d8f_9234_6d1368609b9e"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000068777Member_C000219751Member"
      decimals="INF"
      id="h_516_0e83439e_8c85_49eb_8eb8_6478ae0c9f64"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000068777Member_C000219751Member"
      decimals="INF"
      id="h_517_50fc0fad_2762_4416_8389_a52d97822c79"
      unitRef="USD">67</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000068777Member"
      id="t_558_3a714423_4066_2d8f_41ef_1bd86476ad52">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000068777Member"
      id="t_559_5ad54a9b_76f7_9c12_8215_2d44943f3a20">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 4% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000068777Member"
      decimals="4"
      id="h_518_f62a9909_f8d4_42f2_affb_5c8e5f41f947"
      unitRef="pure">0.04</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000068777Member"
      id="t_201_8287edc0_6213_4b78_8cb2_d8f3911e5a20"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000068777Member"
      id="t_202_b72c3359_b438_4cb6_ba57_bc53b4a55694"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2030 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2030, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, investment-grade (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2030 and December 15, 2030, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services and financials industries or sectors. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed-rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. During the final two years of the Underlying Index, bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that mature in 2030, but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity, will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until June 30, 2030. The last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalance date will be on June 30, 2030. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a bond that is included in the Underlying Index matures, its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000068777Member"
      id="t_560_6d0154e2_e3fe_f89f_6dc2_3d621b3bec74"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000068777Member"
      id="t_203_da21138f_f258_4639_bc6f_f2a567813007"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000068777Member_RiskLoseMoneyMember"
      id="t_529_76026aa8_465a_02d6_49b3_322fb8357b8a">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_CreditRisksMember"
      id="t_530_433f3b17_5bfd_6277_4cb0_ec9a9cd675ee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_InterestRateRisksMember"
      id="t_531_f006220f_2b59_a316_9b29_6eaab058a3cf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_MarketRiskMember"
      id="t_532_d6e95829_8fb1_2dab_19b6_d35998b9d7db"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_IndexRelatedRiskMember"
      id="t_533_9f2f1f44_192d_c473_a443_97b786b8ed71"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_AssetClassRiskMember"
      id="t_534_3b434013_6db2_7633_20bf_571bc7104a6a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_535_36ad2621_202d_635a_9e8a_d0caa0ec763c"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000068777Member_CallRiskMember"
      id="t_536_9bc2b9d4_6354_0ad2_9809_0e906318bb9b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_ConcentrationRiskMember"
      id="t_537_143d5d6d_50bd_c887_c5a1_714b97b3e6ba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_538_06f4d57b_4a31_cdad_d6d9_f326a028eda6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_CybersecurityRiskMember"
      id="t_539_6f6d4818_1ba4_bd13_9eb3_e2de13588310"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000068777Member_DecliningYieldRiskMember"
      id="t_540_6503146c_b8bb_2d95_e2af_d866d3f37d74"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_FinancialCompaniesRiskMember"
      id="t_541_ee98e3b2_af04_f5e7_ec07_0c0112efe70c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_542_46aaaec4_3213_bc4d_2498_c97169b7198a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_IncomeRiskMember"
      id="t_543_bb2a82be_4f35_e782_0fe2_f53d903c0aba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_IssuerRiskMember"
      id="t_544_c8cfecd4_3179_c104_2d32_e5faa4b1056b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_ManagementRiskMember"
      id="t_545_2464140a_a3b8_5079_3f10_da9bb4abfc33"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_MarketTradingRiskMember"
      id="t_546_d27bf310_411b_eea6_a41d_c03ff848f4fa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_OperationalRiskMember"
      id="t_547_7382ab90_2b9a_3304_9c53_53c69475daba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_ReinvestmentRiskMember"
      id="t_548_5aef2e5a_2e1c_909a_10c7_b4d33b271fc7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_RiskOfInvestingInChinaMember"
      id="t_574_e4aab8e4_aa9e_1cdb_f239_08b58f1713b1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_575_b4824331_46c7_0d52_e204_718805862a2e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_RiskOfInvestingInTheUSMember"
      id="t_576_f1fe497e_d6f7_64bc_3bdf_249dd4a80392"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_SecuritiesLendingRiskMember"
      id="t_577_55a1dab4_f6ae_5c27_a4d8_df921fe44c13"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_TrackingErrorRiskMember"
      id="t_578_ebe9b07e_49d2_0489_e9de_d50d150edb52"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068777Member_ValuationRiskMember"
      id="t_579_e835de7d_abb6_5441_caa7_e489a531d24a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000068777Member"
      id="t_204_401ec681_780c_4327_9a37_c579ac4af976"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000068777Member"
      id="t_561_f558dd2a_926c_6048_7bee_b1e8885c3ab8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000068777Member"
      id="t_562_08292498_fb79_521d_eab1_8e69c52bf4a6">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000068777Member"
      id="t_563_f334c509_6bc5_0f01_6a0a_b8e37dd13042">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000068777Member"
      id="t_564_e88e6154_b0e4_24b9_5b84_4b7fa7ffb95e">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000068777Member"
      id="t_565_207a4a17_6419_bfa9_b92b_34d41d846a7c">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000068777Member"
      id="t_566_1485f63d_d28f_104b_f135_350ef36eb58c"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000068777Member"
      id="t_567_a3826320_3ea9_5d7b_b809_522acf96fc25"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.33pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.33pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.17pt;"&gt;7.71%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.33pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.33pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-7.21%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000068777Member_C000219751Member"
      id="h_522_14aa835b_450b_466c_a458_44dfb5ceda23">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_523_cf1cf53c_f5b6_4e21_b1ec_4c6e0481fa2e"
      unitRef="pure">0.0771</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000068777Member_C000219751Member"
      id="h_524_8a82dadd_cfd6_44e9_9cbd_2fc9d76c2a94">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000068777Member_C000219751Member"
      id="h_525_ba936c40_dc90_49e2_9e71_54cf0cc8b4e7">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_526_265276d5_f812_4157_9659_d14dd103bb65"
      unitRef="pure">-0.0721</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000068777Member_C000219751Member"
      id="h_527_a6e76adf_6e3c_4796_a64d_d3b51fb0ca16">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000068777Member"
      id="t_206_f085db58_7173_4003_a548_497b0f50c4d3">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000068777Member_C000219751Member"
      id="t_528_7242d751_6998_f8ef_7fd8_4f74814d5a56">2020-06-23</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_528_263d91e4_6895_476d_a0d0_cbc497f260e0"
      unitRef="pure">0.0357</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068777Member_C000219751Member"
      decimals="4"
      id="h_529_a49acf75_e62e_4a5a_bcb5_7dff651c129e"
      unitRef="pure">-0.0042</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068777Member_C000219751Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_530_4d71ae30_f752_49d9_9926_fe2cc2a7cf31"
      unitRef="pure">0.0161</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068777Member_C000219751Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_531_e51edaef_76d6_44fe_933c_d1f36c449256"
      unitRef="pure">-0.0172</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068777Member_C000219751Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_532_b67f77b3_e4f1_4981_8a5b_cfbadcd40e10"
      unitRef="pure">0.0209</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068777Member_C000219751Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_533_4adffba2_623f_4b30_abed_2a4704082cba"
      unitRef="pure">-0.0087</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068777Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_534_0631613c_891e_47e1_b3d5_de0c7ff49371"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068777Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_535_188f0ff3_92af_459b_8b4a_4c20bc4cbe1d"
      unitRef="pure">-0.0101</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068777Member_BloombergDecember2030MaturityCorporateIndexMember"
      decimals="4"
      id="h_536_8033b694_fd83_46f9_8d66_5ebeb9291b29"
      unitRef="pure">0.0350</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068777Member_BloombergDecember2030MaturityCorporateIndexMember"
      decimals="4"
      id="h_537_a2d57252_3fa3_46c8_a91b_3f944a562dea"
      unitRef="pure">-0.0037</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000068777Member"
      id="t_568_9add11a2_b5db_cf6d_bc19_013f0c1824cd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000068777Member"
      id="t_569_3df3c811_7b5a_b9ae_81d2_b3777b0ca470">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000068777Member"
      id="t_570_7ff2bd8b_088e_850e_e3eb_475880d2b0cd">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000068777Member"
      id="t_571_dbefefae_b704_3ce2_4f5d_fa1270f3db51">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000072204Member"
      id="t_559_0b9e43ef_6488_e154_a6d9_851346eb36be"> iSHARES&#xae; iBONDS&#xae; DEC 2031 TERM CORPORATE ETF  Ticker: IBDWStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000072204Member"
      id="t_207_acc1e40e_f51f_4f3d_a0fc_5e6d9186f864">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000072204Member"
      id="t_208_d2eb8b0b_c81a_4770_a0f2_215c89fd2516"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2031 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2031.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000072204Member"
      id="t_209_d9153de3_6eba_49a6_8d88_724e5650d560">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000072204Member"
      id="t_608_d4b6d940_ce54_da87_7087_1c3f0a002f7f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2031. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000072204Member"
      id="t_609_fae4014b_76cb_6a7a_6b6d_896331d8f64b">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000072204Member"
      id="t_562_a1344319_dc19_7c11_245e_8a74e5e7cf65">December 15, 2031</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000072204Member"
      id="t_561_26956deb_03fe_ef20_8b29_af15ba54b14b">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_538_08332650_3ee2_4024_8420_f35c4fb90c60"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_539_45dbf200_7379_4269_b6c1_9bc0f27fe2ab"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_540_657d0943_61be_48e9_8a9f_b4261e695ee6"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_541_9480b618_657c_4932_a8f3_06081accedd6"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_542_487466d0_8b7f_4170_842e_3b8429e40f6f"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_543_48828871_7726_4796_9134_215739983cad"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_544_fab1249b_1cc5_4c0b_b19e_15011ed3c4a4"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000072204Member"
      id="t_564_27f58519_e9a6_2b38_db20_732e2e0b95af">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000072204Member"
      id="t_563_687eeed3_0368_93ea_56c4_3b32b58083bf">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.&#x2009;Fund expenses (and any applicable waivers) are calculated only through December 15, 2031 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000072204Member_C000228040Member"
      decimals="INF"
      id="h_545_30556750_7745_419a_a94a_100b158e3fd5"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000072204Member_C000228040Member"
      decimals="INF"
      id="h_546_92b2a4e0_d018_447c_a121_f98983ed1011"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000072204Member_C000228040Member"
      decimals="INF"
      id="h_547_5a320c08_9dd5_4a91_b7bd_389944049ab7"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000072204Member_C000228040Member"
      decimals="INF"
      id="h_548_bf9f1df5_846d_4fae_b462_32b25b7e154c"
      unitRef="USD">80</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000072204Member"
      id="t_566_00a443ad_c687_71c2_54c8_cdabcca06f9f">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000072204Member"
      id="t_567_d633b065_8755_2b07_17f3_c03ebef080bf">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 16% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000072204Member"
      decimals="4"
      id="h_549_9d13aacb_4033_4e92_a905_5ba66c4cee8b"
      unitRef="pure">0.16</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000072204Member"
      id="t_212_ecfed349_cd06_406e_8eff_363b2e85dfa2"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000072204Member"
      id="t_213_c5c912ff_0507_485a_8250_d119d1d40e9e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2031 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2031, at which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. The Underlying Index is composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, taxable, investment-grade (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds scheduled to mature between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;January 1, 2031 and December 15, 2031, inclusive. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the consumer goods &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and services industry or sector. The components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. During the final two years of the Underlying Index, bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that mature in 2031, but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity, will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until June 30, 2031. The last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalance date will be on June 30, 2031. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a bond that is included in the Underlying Index matures, its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000072204Member"
      id="t_568_665f50bb_1554_d358_6d7e_6921fdf86819"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000072204Member"
      id="t_214_23f459b6_f74a_4db8_aac5_8397cd0f74ba"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000072204Member_RiskLoseMoneyMember"
      id="t_569_3bc6741f_6c65_ec02_aa84_790cf7f2f57f">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_CreditRisksMember"
      id="t_570_b70b2d7f_d9ef_6732_1476_2fb3f1efb168"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_InterestRateRisksMember"
      id="t_571_8f638d1a_504b_b584_3024_1ebbe0612d39"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_MarketRiskMember"
      id="t_572_c27c39a7_6e27_fbfc_32b5_4f47f319c1d2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_IndexRelatedRiskMember"
      id="t_573_d66fd151_a32c_35a4_ec7c_7578646044f1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_AssetClassRiskMember"
      id="t_574_7c65dfe2_7e74_5c0f_aed8_64dab54f43d4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_575_5a47186f_0d7f_ab1f_6097_781b37bbd203"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_CallRiskMember"
      id="t_576_57778fcd_0663_7f5a_afa7_aba1dbde74ff"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_ConcentrationRiskMember"
      id="t_577_9781af7e_fb00_e93a_550b_7a44eaea5538"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_578_93202b81_6ecc_6266_4989_32fb715f7790"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_CybersecurityRiskMember"
      id="t_579_26cd3f69_d060_3690_c4cc_0808069dca67"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_DecliningYieldRiskMember"
      id="t_580_80688e13_0e64_2a2e_2b5f_bf9d2143a635"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_581_e1682908_17e7_4fa3_7407_a76550df9da9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000072204Member_IncomeRiskMember"
      id="t_582_a1d6b64c_511a_7fa9_5b49_25a654f1b9a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_IssuerRiskMember"
      id="t_583_d9ac4b0c_3d15_c84a_75f0_8007a4f01f53"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_ManagementRiskMember"
      id="t_584_c85c2eee_ed21_83ab_4d2d_4f5e8511dcd6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_MarketTradingRiskMember"
      id="t_585_19dc5c7a_7ada_3f65_f9c4_7df805c05a2a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_OperationalRiskMember"
      id="t_586_a26506b5_0b90_b3a7_a3ee_622909472278"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_ReinvestmentRiskMember"
      id="t_587_5a5f5d0e_8e22_6483_aa51_4e5f1593404f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_RiskOfInvestingInChinaMember"
      id="t_610_9dde8b27_9e94_c3c5_197d_197d401c9965"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_611_1f1786a9_38ef_1e4b_aa0c_3a742e50ef1c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_RiskOfInvestingInTheUSMember"
      id="t_612_aa22631f_dfb0_c4cb_2cb8_d7afb267d526"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_SecuritiesLendingRiskMember"
      id="t_613_1a27a64d_f906_b491_83b6_ae6edac03d19"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_TrackingErrorRiskMember"
      id="t_614_2f2daf9a_7e4e_f0c6_f033_9a6aca4f00df"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072204Member_ValuationRiskMember"
      id="t_615_e7ef558e_1047_f9bd_e38f_c065a7f71ab7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000072204Member"
      id="t_215_608e4ef5_285b_4ede_96c9_f65e0b256263"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000072204Member"
      id="t_607_5bd2246a_82d0_382a_cbd8_132b3d4d1d30"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000072204Member"
      id="t_597_d88dbbc0_b2e5_bdee_da36_cd761f723b49">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000072204Member"
      id="t_598_a1ae3aee_b05f_4443_1146_9b57a12b39aa">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000072204Member"
      id="t_599_e5060467_0a5c_ae5f_8af6_ef2033c3d0be">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000072204Member"
      id="t_600_8da26eaf_5419_88c2_2a0b_5377a8e5d473">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000072204Member"
      id="t_596_4c51d1f6_70c0_ce75_7e09_863857a877b1"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000072204Member"
      id="t_601_9de72bf6_38e0_c859_4fff_6365cb0cd037"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.2pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.64pt;"&gt;8.69%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.2pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-8.14%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000072204Member_C000228040Member"
      id="h_553_dd4631f8_1deb_4388_8b8f_b284f66debcb">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_554_32c27a05_eae4_4082_9e77_9c171372dd56"
      unitRef="pure">0.0869</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000072204Member_C000228040Member"
      id="h_555_67ad62c6_a4e8_4dd4_a529_505939213909">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000072204Member_C000228040Member"
      id="h_556_7c7cd5fb_3b22_44ce_bd4e_18e8fa5d5fdf">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_557_dbe0fa86_2f69_48a8_8536_740c529eccb9"
      unitRef="pure">-0.0814</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000072204Member_C000228040Member"
      id="h_558_580de228_ded0_4e2d_bd3d_8c8a41c6a745">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000072204Member"
      id="t_217_782bef05_5cc2_44f6_9699_63b042d8b61b">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000072204Member_C000228040Member"
      id="t_602_d3429451_efb2_5b32_6e8c_b8204a01b0a9">2021-06-22</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_559_a5e9ebf6_37cf_4804_904b_8314e88830c3"
      unitRef="pure">0.0325</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072204Member_C000228040Member"
      decimals="4"
      id="h_560_ea7b4ca7_bcb6_4f29_a608_814ff80e8ccc"
      unitRef="pure">-0.0181</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072204Member_C000228040Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_561_ee22ec7a_065b_436c_834f_e08c653005a6"
      unitRef="pure">0.0118</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072204Member_C000228040Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_562_22cc753d_a37c_46e1_9a0b_eb10746849f5"
      unitRef="pure">-0.0341</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072204Member_C000228040Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_563_20c4a224_c597_4aff_99bb_c273e04af543"
      unitRef="pure">0.0190</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072204Member_C000228040Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_564_0674a9b6_ed91_4c82_8e44_62500281f13d"
      unitRef="pure">-0.0205</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072204Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_565_a8030af7_a59c_47f6_a2d1_06419833a714"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072204Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_566_c84a99fb_9a63_4812_aba3_e90c3fac59d9"
      unitRef="pure">-0.0161</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072204Member_BloombergDecember2031MaturityCorporateIndexMember"
      decimals="4"
      id="h_567_8c23e6bf_bb30_454c_9264_f52f339fc339"
      unitRef="pure">0.0310</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072204Member_BloombergDecember2031MaturityCorporateIndexMember"
      decimals="4"
      id="h_568_90acfa2d_c978_4f41_81a1_717b74545a20"
      unitRef="pure">-0.0181</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000072204Member"
      id="t_606_2e4d08e0_a0c0_e4c8_3f5f_912f3a142b99"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000072204Member"
      id="t_603_fa1b1eaa_ce9a_1c01_5290_81db44bad252">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000072204Member"
      id="t_604_939a8e84_f9bf_7f74_1f7d_df0edcae3c52">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000072204Member"
      id="t_605_ee4275dd_c51d_0b2f_f89f_1dfa54b5426c">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000076685Member"
      id="t_591_655cb461_a065_c8c6_9425_e9ab1b869244"> iSHARES&#xae; iBONDS&#xae; DEC 2032 TERM CORPORATE ETF  Ticker: IBDXStock Exchange: NYSE ARCA  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000076685Member"
      id="t_218_c945445a_e027_4160_a6b2_d1b38d146270">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000076685Member"
      id="t_219_f8386e10_3622_4d68_8d4f_33ca53681601"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2032 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2032.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000076685Member"
      id="t_220_0960d95b_d13f_4d74_9ab7_1d19579642aa">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000076685Member"
      id="t_221_205c28ad_13fa_4347_af4c_5fd1023d7d87"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2032. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000076685Member"
      id="t_593_a5f6b375_7e82_00c7_f689_3b18a1e389b1">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000076685Member"
      id="t_592_0aaf63bf_b043_6672_3a71_857873502411">December 15, 2032</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000076685Member"
      id="t_594_e5073fde_7dae_d283_9a18_8d9ca7e393ef">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_569_3611b54c_2ab6_4a1d_bf31_33651d21bcf1"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_570_6993421d_2bf6_4acc_9d0f_d09265ebb6ba"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_571_8675eda1_ffdb_4469_b1d4_45ad0af08d99"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_572_a34d486c_cb1a_44de_8734_88fdd53de1b0"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_573_e69c4b58_b6de_492c_93ca_ef1b15d7099c"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_574_1e75c0f6_f838_4d4d_98f7_e7c62b82eb0c"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_575_947744de_1933_48cf_b867_d1b3c0373a53"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000076685Member"
      id="t_596_82861cb6_c8b3_4965_26c3_a51ea0bc3bc8">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000076685Member"
      id="t_595_ea33343b_343d_d4c3_b606_23a1263e5b98">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.&#x2009;Fund expenses (and any applicable waivers) are calculated only through December 15, 2032 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000076685Member_C000236700Member"
      decimals="INF"
      id="h_576_ef77ae02_822a_4977_907e_27d189d3675a"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000076685Member_C000236700Member"
      decimals="INF"
      id="h_577_2c4ca4ef_0577_4657_8200_acb8c8a956f2"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000076685Member_C000236700Member"
      decimals="INF"
      id="h_578_b912aa74_57bc_4c21_9ba9_49602647b44b"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000076685Member_C000236700Member"
      decimals="INF"
      id="h_579_732a1c12_2229_48f6_a668_4b8fc01323a5"
      unitRef="USD">95</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000076685Member"
      id="t_590_854c2c5b_68d7_8081_a79a_813e0292de0a">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000076685Member"
      id="t_597_c34daf81_b7c7_948c_f84d_985c7bf7f89c">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 2% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000076685Member"
      decimals="4"
      id="h_580_707ad7d3_105e_4a97_bd75_0f12d098e559"
      unitRef="pure">0.02</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000076685Member"
      id="t_223_36ff37a9_8c43_4395_8eca_c89d8924b916"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000076685Member"
      id="t_224_5ebf7040_a4b7_4a96_a3cb_97460c74ffa7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2032 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates. The Fund is a term fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will terminate on or about December 15, 2032, at which time it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will distribute its remaining net assets to shareholders pursuant to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a plan of liquidation. The Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is composed of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade (as determined by Bloomberg Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature between January 1, 2032 and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2032, inclusive. As of October 31, 2024, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant portion of the Underlying Index is represented by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of companies in the consumer goods and services and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financials industries or sectors. The components of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. During the final two years of the Underlying Index, bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that mature in 2032, but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity, will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until June 30, 2032. The last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalance date will be on June 30, 2032. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value. When a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond that is included in the Underlying Index matures, its maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000076685Member"
      id="t_598_e31a3be2_ff1f_fd5f_1668_820767625663"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000076685Member"
      id="t_225_7e9dae9e_1bbe_414b_9d7b_c7a9c7189df2"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000076685Member_RiskLoseMoneyMember"
      id="t_599_932f4ff6_2e07_fcf5_f8b1_4aae289f0f22">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_CreditRisksMember"
      id="t_600_e175c7bb_3a4c_68c6_7916_49451d8a235f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_InterestRateRisksMember"
      id="t_601_04922fd5_86c6_3308_e8c9_647480fdf780"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_MarketRiskMember"
      id="t_602_af37aeed_fa5e_0593_88d5_a6cecdefc7fe"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_IndexRelatedRiskMember"
      id="t_603_8a3b5b0a_78d7_9563_7038_f6d0a230093e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_AssetClassRiskMember"
      id="t_604_859d2364_247c_ab0e_8e91_fb7ebcc41c5a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_605_2774b1d6_6f90_20f7_0566_743fdd54b651"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_CallRiskMember"
      id="t_606_432dc05b_0d13_ee12_e0dd_51317b8fcb80"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt; &lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_ConcentrationRiskMember"
      id="t_607_d5d1ee41_2a06_c1bc_16e5_a4368e3fda9e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_608_3173ea85_ad9a_4378_614e_7f0c9e49997c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_CybersecurityRiskMember"
      id="t_609_66b76e28_150c_e37c_2388_3a5c67f2c939"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000076685Member_DecliningYieldRiskMember"
      id="t_610_bc64033b_36db_72ad_5ceb_4d1a72393400"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_FinancialCompaniesRiskMember"
      id="t_611_01511245_5554_b5ff_24c2_305e338e4840"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_612_2f798ef7_1c5a_78bd_0217_945f8a23ecea"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_IncomeRiskMember"
      id="t_613_2776ea6d_009d_ef77_8ca1_009e9d609947"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_IssuerRiskMember"
      id="t_614_a51d2f46_b7c7_c179_96ca_e4712b9bb75e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_ManagementRiskMember"
      id="t_615_cf693b5b_cbcd_9f9f_9dea_a0d37f82f332"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_MarketTradingRiskMember"
      id="t_616_abd87c52_ef3e_0f25_d035_ff9e817bfd91"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_RiskNondiversifiedStatusMember"
      id="t_617_663830eb_59ea_d8a5_da34_29157401ccac"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000076685Member_OperationalRiskMember"
      id="t_618_aec7f40e_6c96_3f93_ad5b_6915c73b2138"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000076685Member_ReinvestmentRiskMember"
      id="t_619_1aee1261_cc8e_6b89_7fe0_7665da1185b1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_RiskOfInvestingInChinaMember"
      id="t_637_a2b82162_08b1_2432_95f1_6ce9e53331ef"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_638_20b01493_8428_a313_b61e_cd689805afee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_RiskOfInvestingInTheUSMember"
      id="t_639_6662bb32_c6dc_a9b2_0e7f_a7e304480342"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_SecuritiesLendingRiskMember"
      id="t_640_40d2b564_0be2_3b7d_b70e_0ef7af18ac5c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_TrackingErrorRiskMember"
      id="t_641_43d57563_1674_0936_1638_958eaba242be"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076685Member_ValuationRiskMember"
      id="t_642_ee7ec9e1_2d78_a4cb_d96f_13ba17d07b92"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000076685Member"
      id="t_226_19f3304f_cec2_452a_950f_c92d37756860"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000076685Member"
      id="t_629_add0ee13_2995_d13a_63ec_14a970af59e5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000076685Member"
      id="t_625_0cb5039b_9ab1_c60f_3f40_6c2c26e58a65">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000076685Member"
      id="t_626_e7a5a400_e408_3159_681f_11f018d0d82f">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000076685Member"
      id="t_627_34c41044_a645_4e5d_748c_62632dcf8347">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000076685Member"
      id="t_628_b9e03c1a_94b3_d031_a9cf_64297a60d305">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000076685Member"
      id="t_630_f9469eb9_24c2_6e44_8a37_acc9c21d21b3"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000076685Member"
      id="t_631_c67ea4ff_e350_09ec_3848_395d088c4a20"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.43pt;"&gt;9.09%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-3.37%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000076685Member_C000236700Member"
      id="h_584_514d8e75_cf12_46db_af45_413983877523">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_585_85384904_4c5a_4744_b2d6_fdfb1965d0b4"
      unitRef="pure">0.0909</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000076685Member_C000236700Member"
      id="h_586_b6b77dba_c705_4ecd_bcdd_b1bf790cf032">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000076685Member_C000236700Member"
      id="h_587_713c4977_48c0_4f16_87bc_75ca881f3558">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_588_8a777ba8_8e83_46b9_9703_eb583400a306"
      unitRef="pure">-0.0337</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000076685Member_C000236700Member"
      id="h_589_1fcd2844_7303_426d_a8d7_fc8f589e88bc">2023-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000076685Member"
      id="t_228_bdf313c4_0244_4b90_b464_fc6ae00f6f70">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000076685Member_C000236700Member"
      id="t_632_c1994cfa_8e00_bcec_c56b_07892153e11e">2022-06-28</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_590_1c93a23b_b4a9_41a6_a187_5f599ab35fb2"
      unitRef="pure">0.0257</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076685Member_C000236700Member"
      decimals="4"
      id="h_591_031bed1c_3a14_4831_88cd_fa8d55d7ad26"
      unitRef="pure">0.0420</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076685Member_C000236700Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_592_8bacfc60_365b_4885_917c_c87bf08a4293"
      unitRef="pure">0.0051</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076685Member_C000236700Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_593_3fb47274_e40e_46ca_9f92_7cfc79a59ee5"
      unitRef="pure">0.0218</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076685Member_C000236700Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_594_0adab0e0_b526_46f3_b14e_bb99bfef65ae"
      unitRef="pure">0.0150</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076685Member_C000236700Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_595_dafaad10_0c6b_4650_b7d1_76ea97d16161"
      unitRef="pure">0.0234</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076685Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_596_18c3da2c_b0fe_42a6_8817_14458a48e1b9"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076685Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_597_702f627b_bc77_4b3f_8069_39bc20e20613"
      unitRef="pure">0.0262</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076685Member_BloombergDecember2032MaturityCorporateIndexMember"
      decimals="4"
      id="h_598_e532c1a6_0d80_490c_8a4d_baeed4e9acba"
      unitRef="pure">0.0246</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076685Member_BloombergDecember2032MaturityCorporateIndexMember"
      decimals="4"
      id="h_599_c5f7c4ac_e1ba_467a_bcc3_f42e88dbd07b"
      unitRef="pure">0.0425</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000076685Member"
      id="t_633_b6d3d8ac_a002_d863_7f2d_5ee5d6605996"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000076685Member"
      id="t_634_5cf00aec_451c_2bda_6aa3_7624cf852999">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000076685Member"
      id="t_635_76502781_4edf_dbd1_04b3_fd906114ac99">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000076685Member"
      id="t_636_1b242dc7_c50f_e988_4bd8_2e69d6750457">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080643Member"
      id="t_621_f4f35966_b484_5d2d_4e73_c60a54bc942a"> iSHARES&#xae; iBONDS&#xae; DEC 2033 TERM CORPORATE ETF   Ticker: IBDYStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080643Member"
      id="t_229_c1a0f89f_3453_46d2_911b_3758443651a5">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080643Member"
      id="t_230_71f20895_797b_41d1_8cf5_8738dcb63d96"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2033 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2033.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080643Member"
      id="t_231_89857a24_bd0e_446f_bbba_e8dd4a41b57e">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080643Member"
      id="t_232_79166a31_5a40_47a8_8f9c_10a62367d806"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2033. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080643Member"
      id="t_657_4813c09b_ca3c_6a69_5221_a6d8854f2676">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080643Member"
      id="t_666_91cd4535_23a2_1697_88a1_8163c82e9cb4">December 15, 2033</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080643Member"
      id="t_622_d8794822_cc32_a06e_6648_e645584f5c77">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_600_e172f1db_38dd_4147_8102_c1fb87260b83"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_601_076b9c0f_2415_4b7e_80f2_4ffa12bfe01d"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_602_01dfbb40_e680_42ad_867a_3e87518de66e"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_603_a30ba502_4de6_40e2_ad85_1175d29595b8"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_604_03db2cbb_018e_45d5_b2f0_92f7403a7789"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_605_fb85e775_cb80_4416_af2e_e6eb1fe77278"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_606_8f7d4dd2_3207_4e1f_ab0e_ddd6ca6440bd"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080643Member"
      id="t_623_56f38f5a_5899_778d_d835_36852c9cb077">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080643Member"
      id="t_624_1d3033e0_1a06_c1fe_20be_e968e82c9ade"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2033 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080643Member_C000243159Member"
      decimals="INF"
      id="h_607_b2192424_bf27_443a_9c11_74ea9a93bd5f"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080643Member_C000243159Member"
      decimals="INF"
      id="h_608_c0b9a3cf_8a88_4b30_a064_e3f9aa0ac654"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000080643Member_C000243159Member"
      decimals="INF"
      id="h_609_57d12f73_cc3a_4037_b716_9f97fefc936a"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000080643Member_C000243159Member"
      decimals="INF"
      id="h_610_98435715_096f_46ba_9743_5a5ef6b2ebdd"
      unitRef="USD">109</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080643Member"
      id="t_625_26a6925c_621a_65a1_ab96_faa58c42e442">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080643Member"
      id="t_626_27860491_0333_8327_0b9a_cd18e23f2fed">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 1% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080643Member"
      decimals="4"
      id="h_611_aaabe505_6ea6_496a_bacb_ed32a72f2e31"
      unitRef="pure">0.01</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080643Member"
      id="t_234_a4ef6257_c8c6_4260_9ade_c2ba0b50d0b6"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080643Member"
      id="t_235_ea52ff6f_7eb1_483a_987b_1f62310523a0"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2033 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates. The Fund is a term fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will terminate on or about December 15, 2033, at which time it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will distribute its remaining net assets to shareholders pursuant to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a plan of liquidation. The Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is composed of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade (as determined by Bloomberg Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature between January 1, 2033 and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2033, inclusive. As of October 31, 2024, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant portion of the Underlying Index is represented by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of companies in the consumer goods and services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry or sector. The components of the Underlying Index are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. During the final two years of the Underlying Index, bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that mature in 2033, but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity, will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until June 30, 2033. The last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalance date will be on June 30, 2033. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value. When a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond that is included in the Underlying Index matures, its maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000080643Member"
      id="t_658_abce00fd_4031_b095_ba8a_4e78a0e36df3"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000080643Member"
      id="t_236_b78fc057_a0b0_4aa3_a325_c4f7d7ea6d62"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080643Member_RiskLoseMoneyMember"
      id="t_631_2f4f1b92_0352_d2a4_fdd0_6bd548ec5673">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_CreditRisksMember"
      id="t_632_6f6efcc1_3cd7_b32e_d51a_16b6a5a50149"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_InterestRateRisksMember"
      id="t_633_b1b9a1b9_f1ef_5ebc_d29b_37c256255e82"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_MarketRiskMember"
      id="t_634_e5cab63d_99f7_dc88_c2f9_28e6f4b21aee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_IndexRelatedRiskMember"
      id="t_635_c540e730_82d5_56c1_f7d5_ad0931ea3615"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_AssetClassRiskMember"
      id="t_636_6565998e_d67c_826e_6f9c_02bd63cb6140"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_637_3311d175_2478_c89f_45a4_e7409ce53e3b"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_CallRiskMember"
      id="t_638_29ab3aa4_8d23_2576_896c_534e9c526dfd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_ConcentrationRiskMember"
      id="t_639_089889a0_135c_a56b_edb1_8bd11f231b94"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_640_a5c9552c_a7a5_1a33_f330_27bc5c40f5c0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_CybersecurityRiskMember"
      id="t_641_3b9a767f_5d8e_f331_64ff_00115c2aac6b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080643Member_DecliningYieldRiskMember"
      id="t_642_220a0388_d035_3fb1_e67a_9827a0d77f29"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_643_a80e4915_5d80_b068_1192_4afd58f0663a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_IncomeRiskMember"
      id="t_644_550b8b9a_99a4_95a4_2f7a_4d8b79e587d5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_IssuerRiskMember"
      id="t_645_85fbc7fb_d077_bace_f95d_29bac2818c36"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_ManagementRiskMember"
      id="t_646_83372b59_998c_3fcb_4b3e_395d13dd10ac"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_MarketTradingRiskMember"
      id="t_647_b70e9900_7e9f_2c68_6978_ef89ca328916"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_RiskNondiversifiedStatusMember"
      id="t_648_c56ec7db_5eb5_2fd2_9a38_5b8e25099ce9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_OperationalRiskMember"
      id="t_649_87970dbd_1725_3db1_f8bb_4e67a7ef9272"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_ReinvestmentRiskMember"
      id="t_650_690f77bf_adce_d742_0766_9b653e8b5ec7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_RiskOfInvestingInChinaMember"
      id="t_667_d5f64cb1_43a9_f0ed_7abf_f7c929817e5d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_668_b2edc3e7_e909_28cd_b19f_8df55454503c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_RiskOfInvestingInTheUSMember"
      id="t_669_4f5ad0e4_3801_af9d_7033_c70afd2fd7fe"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_SecuritiesLendingRiskMember"
      id="t_670_dc02c0f7_0aa6_4b01_29e5_7bd9d9573b8b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_TrackingErrorRiskMember"
      id="t_671_5b204ffd_bf98_32ad_fe0e_9b316a975582"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080643Member_ValuationRiskMember"
      id="t_672_00347623_a8ce_cf77_1ede_0c4dc0fdda51"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080643Member"
      id="t_237_13b712bc_9ad2_483c_b532_319ab9718ecd"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080643Member"
      id="t_627_a1de43d0_9bda_00d3_412b_087458facea8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080643Member"
      id="t_659_44dbfaa5_7583_df72_12df_14fe07bd354c">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080643Member"
      id="t_662_d14ab294_6d59_7adc_ebde_d191f0bd63ff">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080643Member"
      id="t_661_4ece6c2a_6dee_cea4_eeb0_e14b7ebae701">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080643Member"
      id="t_660_9ff8d20d_0dc3_a4fc_6ec7_b0686f1fb332">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080643Member"
      id="t_628_52d8a398_23bd_859c_f889_0d435394481e"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080643Member"
      id="t_629_dd536e2d_b729_415a_0a86_7adc7c291954"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.37pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.37pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.92pt;"&gt;6.07%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.37pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.37pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-3.10%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080643Member_C000243159Member"
      id="h_615_acb07797_ba2c_4bb3_8f48_741907a24a20">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_616_76d84a3b_1423_4c39_b8ce_57c174e11305"
      unitRef="pure">0.0607</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080643Member_C000243159Member"
      id="h_617_ea234a41_8818_424f_8e2c_ef96fd2e4981">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080643Member_C000243159Member"
      id="h_618_df00ed9f_0d72_42d5_97c2_dd6f7a2ee5cc">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_619_d8fbd572_f405_4d9c_af9b_da3e1e51158b"
      unitRef="pure">-0.0310</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080643Member_C000243159Member"
      id="h_620_0b1f86e4_e9f3_4845_ad54_c101bf3507a0">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080643Member"
      id="t_239_8ec87108_00a5_4367_a639_6443a1574385">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080643Member_C000243159Member"
      id="t_656_78800e75_8e2f_a784_93fa_4d534e8c9728">2023-06-21</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_621_ca2cf5ba_2b92_4ea2_948e_6ac7906f9534"
      unitRef="pure">0.0208</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080643Member_C000243159Member"
      decimals="4"
      id="h_622_257bae1a_374e_49e5_8cec_7c33e8ff0369"
      unitRef="pure">0.0509</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080643Member_C000243159Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_623_a841774d_f4ae_4e1d_81e8_54af5d096ea8"
      unitRef="pure">0.0005</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080643Member_C000243159Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_624_febbfb48_3fbc_4278_b2b9_0bb88aff2623"
      unitRef="pure">0.0307</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080643Member_C000243159Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_625_9cc75ee1_4791_4ec9_878f_ef74ff86d6c6"
      unitRef="pure">0.0122</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080643Member_C000243159Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_626_42a2ca18_09e2_4565_a262_6843ec712a92"
      unitRef="pure">0.0302</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080643Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_627_d6830ebc_cec3_486d_9a57_d11bc634cd3b"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080643Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_628_b014bb32_8154_4791_bb92_485bd1286717"
      unitRef="pure">0.0360</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080643Member_BloombergDecember2033MaturityCorporateIndexMember"
      decimals="4"
      id="h_629_f495475c_983d_471c_bb99_2cd727195f4d"
      unitRef="pure">0.0196</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080643Member_BloombergDecember2033MaturityCorporateIndexMember"
      decimals="4"
      id="h_630_9c9c9fb8_f4a5_4d91_ade5_64da157de33b"
      unitRef="pure">0.0507</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080643Member"
      id="t_630_b3e5ff2b_abe6_c18c_6093_7d8e60ce1bfa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080643Member"
      id="t_663_ba48ae28_438e_4e09_fee9_c51ddb331cc5">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. </rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080643Member"
      id="t_664_6cd1110e_85be_9284_86b5_d0aa4f9687b6">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080643Member"
      id="t_665_6c8d73c5_df59_1062_3e0b_a169c048e164">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000085096Member"
      id="t_277_adeba167_8f0b_5f66_164b_0c4bb67868a4"> iSHARES&#xae; iBONDS&#xae; DEC 2034 TERM CORPORATE ETF  Ticker: IBDZStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000085096Member"
      id="t_240_1dcd4a2a_ba4a_4b76_83c9_f75003c6b50c">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000085096Member"
      id="t_241_389adeae_94b2_404b_8871_334356b2e783"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2034 Term Corporate ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; investment-grade corporate bonds maturing in 2034.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000085096Member"
      id="t_242_eddd4b86_5b71_4cd3_b225_0bef2ff03e4e">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000085096Member"
      id="t_243_449f03bc_dc18_44c7_b7b3_6a3ebd03c62d"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2034. The contractual waiver may be terminated prior to the Fund&#x2019;s termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000085096Member"
      id="t_278_9114cd3b_0b6a_4aa2_0e51_e3c1216e37fa">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000085096Member"
      id="t_286_feea287b_88cc_698c_8dbb_cd6376058e09">December 15, 2034</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000085096Member"
      id="t_279_a0f52d33_6a33_6503_72da_d6d26ca4359f">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000085096Member_C000249961Member"
      decimals="4"
      id="h_631_a8844a82_ab7d_491c_a523_28fe5d9f195f"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000085096Member_C000249961Member"
      decimals="4"
      id="h_632_342a10d6_998b_4b08_a222_82d5321a0897"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000085096Member_C000249961Member"
      decimals="4"
      id="h_633_20dcbbaf_c170_4a54_ac62_74a77805e9bb"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000085096Member_C000249961Member"
      decimals="4"
      id="h_634_19247ce7_b35c_41b7_9c42_3c3155a9589f"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000085096Member_C000249961Member"
      decimals="4"
      id="h_635_0cd73185_38cd_4cf5_ba2c_130a9094bb58"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000085096Member_C000249961Member"
      decimals="4"
      id="h_636_ad95d20a_8bde_4dfa_b738_d1475a3726ad"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000085096Member_C000249961Member"
      decimals="4"
      id="h_637_e114cda9_0cbb_41f0_9ff9_878da43fce7f"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000085096Member"
      id="t_280_b4911d7e_1b6e_5993_0f29_66b0bfc68023">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000085096Member"
      id="t_287_b63e9c8b_8590_bd1b_0a30_50a914ce9d29">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000085096Member"
      id="t_281_94155b83_bc02_7d4b_60ae_cb531933f242">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000085096Member"
      id="t_282_941c1d08_bccc_28df_8860_11ccda0bde0f">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.&#x2009;Fund expenses (and any applicable waivers) are calculated only through December 15, 2034 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000085096Member_C000249961Member"
      decimals="INF"
      id="h_638_6d1534af_de5e_4a6b_bc77_69b950b85f6a"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000085096Member_C000249961Member"
      decimals="INF"
      id="h_639_cf3df974_c993_4ffd_a916_94f7d3053865"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000085096Member"
      id="t_250_e6c74223_d807_646e_660e_1353981fa75b">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000085096Member"
      id="t_283_c725f48b_d9c1_85d4_c88d_43d6b5636033">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. From inception (May 22, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000085096Member"
      decimals="4"
      id="h_640_07efdd39_0dc1_4ee3_aede_08e36e522b26"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000085096Member"
      id="t_245_a19eecfe_ca22_489e_b17e_27afdde89a41"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000085096Member"
      id="t_246_da2f5bee_f82f_44c8_9174_372752bb0c41"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in component securities of the Bloomberg December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2034 Maturity Corporate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also invest in U.S. government securities, short-term paper, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash and cash equivalents, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates. The Fund is a term fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will terminate on or about December 15, 2034, at which time it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will distribute its remaining net assets to shareholders pursuant to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a plan of liquidation. The Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is composed of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade (as determined by Bloomberg Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature between January 1, 2034 and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2034, inclusive. As of October 31, 2024, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant portion of the Underlying Index is represented by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of companies in the consumer goods and services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry or sector. The components of the Underlying Index are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade securities publicly issued by U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers that have $300 million or more of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value at the time of inclusion. The non-U.S. corporate issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index consist primarily of corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by companies domiciled in developed countries. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund will invest in non-U.S. issuers to the extent necessary for it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to track the Underlying Index. Each bond included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. Further, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and have a fixed rate, although they can carry a coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that steps-up or changes according to a predetermined schedule. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, to be included in the Underlying Index, securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are rated by all three of the rating agencies named below must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by at least two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, which is defined as Baa3 or higher by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or BBB- or higher by S&amp;amp;P Global Ratings or Fitch &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, Inc. When ratings from only two of the three rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies are available, the lower rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. Securities with a rating from only one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings agencies must be rated investment-grade in order to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index. In cases where ratings are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, other sources may be used to classify securities by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment quality.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is constructed with the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The parent index, the Bloomberg U.S. Corporate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), representing U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable, investment-grade corporate bonds, is stripped of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside of the maturity range described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. During the final two years of the Underlying Index, bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that mature in 2034, but had not been eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index due to being within one year of maturity, will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index until such bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reach maturity. Securities are then market-cap weighted within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, with a 3% cap typically imposed on any one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index. In the event a 3% cap is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not possible due to lack of issuers, the cap will be increased in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;0.50% increments until the Underlying Index can be calculated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month until June 30, 2034. The last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalance date will be on June 30, 2034. During this final six &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month period, the Underlying Index will no longer be updated or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced, except to remove securities which are downgraded to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade per the eligibility criteria described &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;above. Additionally, during this period, existing bond weights will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be allowed to float based on changes in market value. When a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond that is included in the Underlying Index matures, its maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value will be represented in the Underlying Index by cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;throughout the remaining life of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds fixed maturity series of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond ETFs sponsored by BlackRock, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not invest in U.S. savings bonds or other U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (except to the extent the Fund holds cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments consistent with its investment objective) and is not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments of the Underlying Index, and (except during the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;twelve months of the Fund&#x2019;s operations) the Fund will invest at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least 90% of its assets in fixed income securities of the types &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index that BFA believes will help the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last six months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds may not be reinvested by the Fund in bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;but instead will be held in cash and cash equivalents. By fifteen &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;days prior to maturity, the Underlying Index is expected to consist &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;almost entirely of cash and cash equivalents. On or around this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, the Fund will wind up and terminate. After appropriate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provision is made for any Fund liabilities, its net assets will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributed to then-current shareholders pursuant to a plan of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation. The Fund's termination was approved by a majority of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional approval by Fund shareholders. The Board may extend &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the termination date if a majority of the Board determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000085096Member"
      id="t_284_895bd63d_2b52_3416_6c67_41dd171d8ddc"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000085096Member"
      id="t_247_c908ed88_cf87_4bf6_8af2_631fef3df050"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000085096Member_RiskLoseMoneyMember"
      id="t_251_20ca268e_703b_fbb2_4c1b_d7c7b2506996">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_CreditRisksMember"
      id="t_252_27fcc777_4adf_5bdd_d642_781193a9b794"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_InterestRateRisksMember"
      id="t_253_ee8b9967_ae82_2af2_010b_8cbdbc523c7c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_MarketRiskMember"
      id="t_254_bf631c88_fe56_62ae_30f9_4c33037ea3e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_IndexRelatedRiskMember"
      id="t_255_98de4204_ef5b_9dd6_caa6_0c3225b8217e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_AssetClassRiskMember"
      id="t_256_cb7e480e_657a_b013_a1c0_39d57f2589fd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_AssetsUnderManagementAUMRiskMember"
      id="t_257_77c21ec2_ad21_d82e_191e_0d92991e554a"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_258_fc3e3f77_d93a_eee4_f0c5_d229265f0c6d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_CallRiskMember"
      id="t_259_79775139_7ae3_6c68_a374_680911a661d6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_ConcentrationRiskMember"
      id="t_260_b663b34d_e90f_bd3d_1fe9_6047970f675b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_261_62d58d3f_493d_25b7_db63_116aea019b16"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_CybersecurityRiskMember"
      id="t_262_8f4db167_af1f_385b_59a0_d719f0e07715"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_DecliningYieldRiskMember"
      id="t_263_3e6083f1_e064_4e24_ac6c_12256c23243a"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the twelve months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s planned termination date, the Fund&#x2019;s yield will generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to move toward prevailing money market rates and may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than the yields of the bonds previously held by the Fund and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_264_ff8e4563_71b7_04be_3905_346fe9a41cdd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a bond that has a level coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment and a fixed payment at maturity, will make distributions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of income that vary over time. It is expected that an investment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, if held through maturity, will produce aggregate returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparable to a direct investment in a group of bonds of similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality and maturity. Unlike a direct investment in bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the breakdown of returns between Fund distributions and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation proceeds are not predictable at the time of your &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. For example, at times during the Fund's existence it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may make distributions at a greater (or lesser) rate than the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payments received on the Fund's portfolio, which would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund returning a lesser (or greater) amount on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidation than would otherwise be the case. The rate of Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distribution payments may adversely affect the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characterization of your returns from an investment in the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative to a direct investment in bonds. If the amount you receive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as liquidation proceeds upon the Fund's termination is higher or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower than your cost basis, you may experience a gain or loss for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_IncomeRiskMember"
      id="t_265_8a711a1c_0b5f_9703_b5c7_14651bb810b2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_IssuerRiskMember"
      id="t_266_2a3dc036_4ccb_5589_c00b_ef16996e9b2d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_ManagementRiskMember"
      id="t_267_2527a26b_7ac6_3d75_513b_dfc0e22d0d45"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_MarketTradingRiskMember"
      id="t_268_2bcec911_c031_6989_541c_8d297f68c2db"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_RiskNondiversifiedStatusMember"
      id="t_269_b681b9c2_45b7_51ed_b1d2_b5dfb4908fa7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_OperationalRiskMember"
      id="t_270_e7d47533_6bf3_a447_dad6_225f16bedd71"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_ReinvestmentRiskMember"
      id="t_271_2ea3768f_be6c_1a6c_d168_2bc8d87516ea"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_RiskOfInvestingInChinaMember"
      id="t_288_7946e076_0e8d_844b_8358_cddb84598615"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_289_bf85868a_cedf_6e6e_c620_b4502260fa9e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_RiskOfInvestingInTheUSMember"
      id="t_290_4cf8687d_6057_a69d_a04e_daa73ded1235">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_SecuritiesLendingRiskMember"
      id="t_291_b67744de_79d0_1a6e_8723_27b191e0fd79">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_TrackingErrorRiskMember"
      id="t_292_c4faf5c6_9d8a_ca58_e528_adac3f25f896">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085096Member_ValuationRiskMember"
      id="t_293_58220bbb_087c_77f6_0f83_b39e9b80e79b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000085096Member"
      id="t_248_c93fa954_28dc_4c17_b363_f80ffe5a15ef"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000085096Member"
      id="t_249_dd2a9339_b3de_426d_ae8f_3072823c1837"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000085096Member"
      id="t_294_4c21e8da_1f08_b015_9c89_8f73eea80b5d">As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report.</rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000088577Member"
      id="t_260_2adaccf9_bab0_e24f_3a62_98e161a7a694"> iSHARES&#xae; iBONDS&#xae; 1-5 YEAR CORPORATE LADDER ETF   Ticker: LDRCStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000088577Member"
      id="t_250_66ec60cd_ab5d_4101_80e3_6cd9b53bc74b">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000088577Member"
      id="t_251_ae6a81a5_13af_4561_9891_8e70ef56e0ae"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 1-5 Year Corporate Ladder ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of a portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of underlying iShares iBonds Corporate ETFs with maturities less than six years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000088577Member"
      id="t_252_6d192ffb_83f5_43ae_80be_1bbf868565e8">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000088577Member"
      id="t_253_37b442aa_49bc_4870_8b67_698bbd332aa1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000088577Member"
      id="t_267_d5f740d2_5e33_d7cc_10ea_3e3bbb74366d">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000088577Member"
      id="t_261_0c4df473_e770_16bc_e58e_984503c74f3b">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000088577Member_C000254885Member"
      decimals="4"
      id="h_641_8c1efe04_5070_4226_b359_f8fa1a99e6b1"
      unitRef="pure">0.0000</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000088577Member_C000254885Member"
      decimals="4"
      id="h_642_17b1a78c_299d_4e6e_90e8_119dac06a0ac"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000088577Member_C000254885Member"
      decimals="4"
      id="h_643_3b5d935d_0b24_4c1e_bfb3_2b99c3c8ddf4"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000088577Member_C000254885Member"
      decimals="4"
      id="h_644_289da5cc_eb16_4bd5_b3f1_e1be6a7ffbe0"
      unitRef="pure">0.0010</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000088577Member_C000254885Member"
      decimals="4"
      id="h_645_5145ae30_f983_42f6_9a2a_853082396cc0"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000088577Member"
      id="t_295_0a53ea21_b207_7f04_80f7_2224b982a8d7">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000088577Member"
      id="t_296_829783ad_ae73_d131_b6b6_9d5a21b96c56">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000088577Member"
      id="t_262_8365bb42_85a1_7431_2c63_cacf31e3e513">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000088577Member"
      id="t_263_9cadbcec_b09b_e3de_a8ea_d1ebe0c1237d"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000088577Member_C000254885Member"
      decimals="INF"
      id="h_646_ef063af7_6e61_499d_88ef_7f7abcc526d8"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000088577Member_C000254885Member"
      decimals="INF"
      id="h_647_561ef804_dcdc_4115_ac38_818742ecbc43"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000088577Member"
      id="t_264_4942df09_49aa_bb65_81d7_f245eec59dab">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000088577Member"
      id="t_265_33d5bb40_6e15_dcb8_c79f_72e4a5b0f9d3">The Fund and the underlying funds in which the Fund invests (each, an &#x201c;Underlying Fund&#x201d; and collectively, the &#x201c;Underlying Funds&#x201d;) may pay transaction costs, such as commissions, when they buy and sell securities (or &#x201c;turn over&#x201d;their portfolios). A higher portfolio turnover rate for the Fund or Underlying Funds may indicate higher transaction costs and may cause the Fund or the Underlying Funds to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to Underlying Funds included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. Because the Fund's inception date (November 7, 2024) is after the most recent FYE, there is no reportable turnover.</rr:PortfolioTurnoverTextBlock>
    <rr:StrategyHeading
      contextRef="S000088577Member"
      id="t_255_f2d8723e_8cee_483f_a179_7ed169e972ac"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000088577Member"
      id="t_256_7711ea43_3432_4d0c_94dc_64d313e356a8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a fund of funds and seeks to track the investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;results of the BlackRock iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; 1-5 Year Corporate Ladder &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying Index is composed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exclusively of underlying iShares iBonds Corporate ETFs (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Term Corporate ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock Index Services, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;themselves seek investment results corresponding to their own &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying indexes. The Fund invests primarily in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds and cash and cash equivalents, including shares of money &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market funds advised by BFA or its affiliates (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock Cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index that provides exposure to U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade corporate bonds spanning five consecutive &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity years. The Underlying Index obtains this exposure by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holding iShares&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; ETFs as constituents.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is reconstituted and rebalanced annually on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last business day in June of each year. Constituents for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are limited to the iBonds Term Corporate ETFs &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) associated with the asset class of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. On the reconstitution date the iBonds ETF with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the nearest maturity is removed from the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the iBonds ETF with a five-year maturity is included (based on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider's eligibility criteria) - providing a rolling five-year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to U.S. dollar-denominated, investment-grade corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds. If an iBonds ETF is not available for a given maturity year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;within the five-year range, the Underlying Index will hold fewer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds ETF constituents. On the rebalance date, each index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;constituent is assigned equal weighting. However, for the one-year&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; period after each rebalance date, changes in ETF prices may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause Underlying Index constituent weights to drift. At the next &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;annual rebalance constituent weights will be realigned. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;November 8, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by companies in the consumer goods and services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and financials industries or sectors.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Funds. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;selected are expected to have, in the aggregate, investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (based on factors such as market value and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry weightings), fundamental characteristics (such as return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in interest rates), maturity or credit ratings and yield) and liquidity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures similar to those of an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#160;or each Underlying Fund may or may not hold all of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the applicable Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to achieve its investment objective by investing, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;under normal circumstances, at least 80% of its net assets, plus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of any borrowings for investment purposes, in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities and instruments in the Fund&#x2019;s Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index and/or bonds included in the underlying index of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by the Index Provider, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an affiliated person of the Fund and of BFA, the Fund&#x2019;s investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser. The Index Provider determines the composition and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative weightings of the securities in the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000088577Member"
      id="t_268_7ca7fd5a_3722_d84d_eb97_c7885ea241f3"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000088577Member"
      id="t_257_2765d063_59e3_45b1_b6b4_15ac91c5e39e"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000088577Member_RiskLoseMoneyMember"
      id="t_269_3d942f72_5593_4b31_3ce6_ebff56654fd4">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_CreditRisksMember"
      id="t_270_67043234_9a29_da87_7c18_34318f303671"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_InterestRateRisksMember"
      id="t_271_3257627a_5e97_feb4_0170_d771199a9ba5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_InvestmentInUnderlyingFundRiskMember"
      id="t_272_9a7a8b7a_3eb6_625f_6953_a6bc5536c59f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds, so the Fund&#x2019;s investment performance and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks are likely to be directly related to those of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds. The Fund&#x2019;s NAV will change with changes in the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Funds and other assets that the Fund holds. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of an Underlying Fund may trade at a premium or discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bear the expenses charged by the Underlying Funds, and an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund may entail more expenses than a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Underlying Funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_MarketRiskMember"
      id="t_273_70550e8e_126f_ac07_1a8c_a7c2a8a48893"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_IndexRelatedRiskMember"
      id="t_274_a4cbcad9_8e43_98e0_afa5_a6c8bb50ada2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_AssetClassRiskMember"
      id="t_275_89246966_b90c_a59a_ff15_501ae9c0a368"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_AssetsUnderManagementAUMRiskMember"
      id="t_276_669bb479_9f78_71fb_2384_a2f0bed0ec6d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088577Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_277_d326b10d_10e1_e68b_189a_9074bff499f6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088577Member_CallRiskMember"
      id="t_278_5a3b107b_ccef_f546_91b4_21a7a85b49f7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_ConcentrationRiskMember"
      id="t_279_0bca1f59_4496_bd40_020d_95a647d1b08c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088577Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_280_8b9bf0db_1c24_ea07_926a_d2a50159f8fe"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_CybersecurityRiskMember"
      id="t_281_a6d3919e_80ac_e894_6986_22acf0cfe73b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_FinancialCompaniesRiskMember"
      id="t_282_e5a13586_21ad_f9c5_9b44_55f3c70bd5fc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_IncomeRiskMember"
      id="t_283_0ba5fdf3_08b7_f17e_897d_150db43b04cc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term. In addition, the Fund's income is expected to decline in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months leading up to its maturity date because its portfolio will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increasingly consist of cash and cash equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_IssuerRiskMember"
      id="t_284_7f2fae44_aa16_5cc5_3311_20090686342c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_ManagementRiskMember"
      id="t_285_c73bf3d5_7996_7aa3_c820_d3af1f732459"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_MarketTradingRiskMember"
      id="t_286_0171fd52_b3ea_cc7c_ce15_dc3146bce3e3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_RiskNondiversifiedStatusMember"
      id="t_287_bc5f5b28_cee0_b4f7_5d74_e40c5bb7b642"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_OperationalRiskMember"
      id="t_288_3657010d_e8a8_4ec1_753a_de8853dc9478"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_ReinvestmentRiskMember"
      id="t_289_18719602_5a9a_2661_ff99_26d953be4ac4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_RiskOfInvestingInTheUSMember"
      id="t_290_d96644c5_eaf6_c036_3ad2_7a7cc8792870"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_SecuritiesLendingRiskMember"
      id="t_291_cd41ae6e_d222_d173_688b_e0d11ad3d899"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_SmallFundRiskMember"
      id="t_292_1e992e8b_8bbe_2a50_cf99_7c4217a3f943"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_TrackingErrorRiskMember"
      id="t_293_c8b989dc_6085_f8f5_0c1d_84046bfce912"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&#160;To the extent that the Fund seeks to achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective through investments in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds, the Fund may experience increased tracking error as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to investing directly in the securities or other assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the underlying indexes of the Underlying Funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088577Member_ValuationRiskMember"
      id="t_294_d991fb8b_2442_f441_fd0e_9ae9acbb4edc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000088577Member"
      id="t_258_4e42b1a4_dcd0_4b7f_8959_29bbe863fd64"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000088577Member"
      id="t_259_aa29e135_a7cc_4bc2_9a2a_2a377a5df4fe">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000088577Member"
      id="t_266_6b2d956f_b540_bb53_86b7_b1e2a99bfbb9"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000088578Member"
      id="t_270_1c730de5_a4e1_5cf1_be9d_1bc1ada08625"> iSHARES&#xae; iBONDS&#xae; 1-5 YEAR HIGH YIELD AND INCOME LADDER ETF  Ticker: LDRHStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000088578Member"
      id="t_260_ee4755ab_c7a4_42a9_8fa8_84903490744b">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000088578Member"
      id="t_261_fe5cd84d_eff8_4d57_94aa_fc27b5c6e254"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 1-5 Year High Yield and Income Ladder ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a portfolio of underlying iShares iBonds High Yield and Income ETFs with maturities less than six years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000088578Member"
      id="t_262_75145ab8_c0f2_4cc2_92f8_6fb2410c9244">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000088578Member"
      id="t_263_835a43d7_e979_49c6_93cd_92a048c16a8f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000088578Member"
      id="t_271_ffca39f5_3235_9973_a3d6_7ceea5db7123">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000088578Member"
      id="t_272_852d3f83_feec_00b3_695c_d6f8730a835c">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000088578Member_C000254886Member"
      decimals="4"
      id="h_648_a24644eb_34f0_4883_8fd2_767d6119b218"
      unitRef="pure">0.0000</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000088578Member_C000254886Member"
      decimals="4"
      id="h_649_d190e2e7_07ed_49fd_86d0_00e236b2b444"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000088578Member_C000254886Member"
      decimals="4"
      id="h_650_e26fbcf8_abf6_499c_962a_516463373354"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000088578Member_C000254886Member"
      decimals="4"
      id="h_651_000bb841_6c64_4e12_befd_ed9f92395bcf"
      unitRef="pure">0.0035</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000088578Member_C000254886Member"
      decimals="4"
      id="h_652_6f306517_6551_4813_b851_aa0c81e2582f"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000088578Member"
      id="t_273_492634f8_4d4d_faad_c7d5_11dbf9f32875">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000088578Member"
      id="t_274_d591d1ac_1d64_2a23_e245_e62460a408e7">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000088578Member"
      id="t_276_cda59bf4_76fc_a7ee_bc81_0e9092e4d07b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000088578Member"
      id="t_275_d858c8ef_cd16_1059_4b50_26165c7694fc">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000088578Member_C000254886Member"
      decimals="INF"
      id="h_653_13d6e74e_d167_4f58_b15c_d2b64021843e"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000088578Member_C000254886Member"
      decimals="INF"
      id="h_654_7e2c4b40_f503_40f7_8100_f4ef25cf0ce6"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000088578Member"
      id="t_278_e2eb61ae_962c_ef04_e073_d773ee5983ef">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000088578Member"
      id="t_277_1dde6b3b_141b_3f21_92f0_3a601548e40e">The Fund and the underlying funds in which the Fund invests (each, an &#x201c;Underlying Fund&#x201d; and collectively, the &#x201c;Underlying Funds&#x201d;) may pay transaction costs, such as commissions, when they buy and sell securities (or &#x201c;turn over&#x201d; their portfolios). A higher portfolio turnover rate for the Fund or Underlying Funds may indicate higher transaction costs and may cause the Fund or the Underlying Funds to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example&#x2009;(except costs to Underlying Funds included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. Because the Fund's inception date (November 7, 2024) is after the most recent FYE, there is no reportable turnover.</rr:PortfolioTurnoverTextBlock>
    <rr:StrategyHeading
      contextRef="S000088578Member"
      id="t_265_f0811b17_c236_4780_928f_28a570693014"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000088578Member"
      id="t_266_335949e1_5295_48de_9bd3_a13b8f5a96a0"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a fund of funds and seeks to track the investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;results of the BlackRock iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; 1-5 Year High Yield and Income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ladder Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composed exclusively of underlying iShares iBonds High Yield and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Income ETFs (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds Term High Yield and Income ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (as determined by BlackRock Index Services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that themselves seek investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;results corresponding to their own underlying indexes. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests primarily in the Underlying Funds and cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents, including shares of money market funds advised by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA or its affiliates (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock Cash Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index that provides exposure to U.S. dollar-denominated, high-yield&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and other income generating corporate bonds spanning five &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consecutive maturity years. The Underlying Index obtains this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure by holding iShares&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; ETFs as constituents.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is reconstituted and rebalanced annually on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last business day in June of each year. Constituents for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are limited to the iBonds Term High Yield and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Income ETFs (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) associated with the asset class of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. On the reconstitution date the iBonds ETF &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with the nearest maturity is removed from the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the iBonds ETF with a five-year maturity is included (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Index Provider's eligibility criteria) - providing a rolling five-year&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; exposure to U.S. dollar-denominated, generating corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield and income bonds. If an iBonds ETF is not available for a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;given maturity year within the five-year range, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index will hold fewer iBonds ETF constituents. On the rebalance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, each index constituent is assigned equal weighting. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, for the one-year period after each rebalance date, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in ETF prices may cause Underlying Index constituent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weights to drift. At the next annual rebalance constituent weights &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be realigned. As of November 8, 2024, a significant portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index is represented by companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer goods and services industry or sector.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Funds. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;selected are expected to have, in the aggregate, investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (based on factors such as market value and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry weightings), fundamental characteristics (such as return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in interest rates), maturity or credit ratings and yield) and liquidity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures similar to those of an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#160;or each Underlying Fund may or may not hold all of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the applicable Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to achieve its investment objective by investing, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;under normal circumstances, at least 80% of its net assets, plus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of any borrowings for investment purposes, in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities and instruments in the Fund&#x2019;s Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index and/or bonds included in the underlying index of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by the Index Provider, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an affiliated person of the Fund and of BFA, the Fund&#x2019;s investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser. The Index Provider determines the composition and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative weightings of the securities in the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000088578Member"
      id="t_308_a8eb3f31_1e0c_9daf_2065_746a88ee0a1b">Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.</rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000088578Member"
      id="t_267_c1aff5b3_99ff_4656_95ff_8c325524ae48"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000088578Member_RiskLoseMoneyMember"
      id="t_279_d292c5db_d172_7ed1_994d_00e0b659f72d">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_HighYieldSecuritiesRiskMember"
      id="t_280_5d7a0617_00dc_03c2_5057_8522569a79a2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default. BBB-rated bonds, although investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may share some of the same speculative characteristics as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_CreditRisksMember"
      id="t_281_f9c03393_fab2_7d75_c3f7_584fc66ff654"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_IncomeRiskMember"
      id="t_282_744a4eb0_12db_3738_5669_2dd981c5232c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding instruments as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds. As the Fund does not seek to return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any predetermined amount at maturity or in periodic distributions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term or when the BBB-rated bonds are added to the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index as constituent high yield bonds are called, no longer qualify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion or decline in value compared to a reference point. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Such change may result in a net decrease in the average yield of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds held by the Fund. In addition, the Fund&#x2019;s income is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expected to decline in the months leading up to its maturity date &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;because its portfolio will increasingly consist of cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_InvestmentInUnderlyingFundRiskMember"
      id="t_283_e67c0456_735f_4813_e951_acedc84159cd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds, so the Fund&#x2019;s investment performance and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks are likely to be directly related to those of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds. The Fund&#x2019;s NAV will change with changes in the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Funds and other assets that the Fund holds. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of an Underlying Fund may trade at a premium or discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bear the expenses charged by the Underlying Funds, and an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund may entail more expenses than a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Underlying Funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_MarketRiskMember"
      id="t_284_fcad469e_208b_fb25_8ce7_5825934d8b19"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_IndexRelatedRiskMember"
      id="t_285_f7f71d6d_76f5_573d_f234_220f7b02419e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088578Member_AssetClassRiskMember"
      id="t_286_fed10acc_98e2_0576_5031_57f1e1d31d15"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_AssetsUnderManagementAUMRiskMember"
      id="t_287_be58121d_df39_19db_f1d6_0161ed72a073"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088578Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_288_b5b54657_a1f8_bc89_f232_24e40f77bfde"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088578Member_CallRiskMember"
      id="t_289_aece3255_f762_9edd_ff75_1f8cb74918ff"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_ConcentrationRiskMember"
      id="t_290_230df1e3_9ced_8e8c_25c0_af915d5f3d1b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_291_ed6ac4cf_5e93_9fca_baff_5502747d21e4"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_CybersecurityRiskMember"
      id="t_292_b701e35a_2ab2_2c27_a022_de3eb6777efc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088578Member_IlliquidInvestmentsRiskMember"
      id="t_293_204b3e4f_c9e8_4ebc_9001_f19d0628a922"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_InterestRateRisksMember"
      id="t_294_c29e16ea_1ac7_fb1c_03f1_53af023bd726"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_IssuerRiskMember"
      id="t_295_82db5413_289c_a997_e10d_fcab8edcddce"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_ManagementRiskMember"
      id="t_296_4d478709_0cfb_4851_a2a5_bb605bc2c63d"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_MarketTradingRiskMember"
      id="t_297_e7e58b8e_e5b5_226e_2d9c_d276838784ef"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_RiskNondiversifiedStatusMember"
      id="t_298_65408ed8_cbc5_ba3c_c9ca_aa89defb0f94"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_OperationalRiskMember"
      id="t_299_fca018f8_8bfe_c51d_0f45_070fb06107cc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_300_a31de338_1cf8_d145_c16d_fbc8cd214154"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_ReinvestmentRiskMember"
      id="t_301_8375100d_4d56_1bcb_4a16_990b20fd7480"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reinvestment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may invest a portion of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term fixed-income instruments and, as a result, may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected if interest rates fall because it may have to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in lower-yielding instruments&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as bonds in the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_RiskOfInvestingInTheUSMember"
      id="t_302_020b6c4a_118f_728f_33e4_c9683fb11fdf"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_SecuritiesLendingRiskMember"
      id="t_303_9f4750da_db4d_acd4_11da_a00ce0374701"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_SmallFundRiskMember"
      id="t_304_834e3069_d159_0bd7_6c98_e8dd839578f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_TrackingErrorRiskMember"
      id="t_305_aa689877_cff2_6a7f_2abb_5313b0ff8d87"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&#160;To the extent that the Fund seeks to achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective through investments in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds, the Fund may experience increased tracking error as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to investing directly in the securities or other assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the underlying indexes of the Underlying Funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088578Member_ValuationRiskMember"
      id="t_306_a5386ee2_505d_6a2c_a798_7823e32e9fc5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000088578Member"
      id="t_268_7c52ade9_e7dd_4a54_b8d8_12ada7660bf2"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000088578Member"
      id="t_269_56f59780_8741_4501_9399_fab36a9dddba"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000088578Member"
      id="t_307_a9661683_3a0d_a2c1_e976_cbcb385d5eb9">As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report.</rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000088579Member"
      id="t_280_60b49ec4_ec2a_3bae_5e34_d4a1ae166615"> iSHARES&#xae; iBONDS&#xae; 1-5 YEAR TIPS LADDER ETF  Ticker: LDRIStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000088579Member"
      id="t_270_095c3848_2f42_4ce2_8f7c_67a41a413140">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000088579Member"
      id="t_271_c82c4a2c_57d1_4964_ad94_4ace6d54b7e6"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 1-5 Year TIPS Ladder ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of a portfolio of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying iShares iBonds TIPS ETFs with maturities less than six years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000088579Member"
      id="t_272_f653e402_c5b9_4cf7_aa3e_d72fdaeee062">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000088579Member"
      id="t_273_f65d0761_5755_4490_8079_4df67c37aa36"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000088579Member"
      id="t_314_235adf42_dc53_fa07_ee11_9f1f63b15e11">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000088579Member"
      id="t_281_6022489e_044b_9206_5461_342d0af1cf8c">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000088579Member_C000254887Member"
      decimals="4"
      id="h_655_206a3be2_b10f_43ed_af13_31ae10b106ff"
      unitRef="pure">0.0000</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000088579Member_C000254887Member"
      decimals="4"
      id="h_656_d4fc8d78_c39f_4934_8f2a_a06251a3bb2a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000088579Member_C000254887Member"
      decimals="4"
      id="h_657_9970ce23_1508_48dc_8b60_889b77363b39"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000088579Member_C000254887Member"
      decimals="4"
      id="h_658_0ea87bd9_7dcc_4896_8ba8_4ad2156e95c5"
      unitRef="pure">0.0010</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000088579Member_C000254887Member"
      decimals="4"
      id="h_659_9c322aad_6261_44e9_a0dd_16f30bba06dc"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000088579Member"
      id="t_309_0a784963_ffaa_916b_cf7a_afae8d2bc512">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000088579Member"
      id="t_310_5a553196_dc1c_49a3_e304_756853a9d2bf">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000088579Member"
      id="t_307_2a212a8e_03e9_d4fc_737f_33d350d70a54">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000088579Member"
      id="t_308_497377d4_6036_23f1_c980_3f47e92ec4ed">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000088579Member_C000254887Member"
      decimals="INF"
      id="h_660_7e994712_afc6_49e8_a8d7_955494bc7be3"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000088579Member_C000254887Member"
      decimals="INF"
      id="h_661_9b9e7762_3c45_4f6c_9b17_f76bfe9d4a6e"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000088579Member"
      id="t_284_8193f32c_97cf_53d2_fe35_48d13975869e">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000088579Member"
      id="t_313_badcd033_4cc9_0688_a00e_d604a4c9ed7f">The Fund and the underlying funds in which the Fund invests (each, an &#x201c;Underlying Fund&#x201d; and collectively, the &#x201c;Underlying Funds&#x201d;) may pay transaction costs, such as commissions, when they buy and sell securities (or &#x201c;turn over&#x201d;their portfolios). A higher portfolio turnover rate for the Fund or Underlying Funds may indicate higher transaction costs and may cause the Fund or the Underlying Funds to incur increased expenses. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to Underlying Funds included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. Because the Fund's inception date (November 7, 2024) is after the most recent FYE, there is no reportable turnover.</rr:PortfolioTurnoverTextBlock>
    <rr:StrategyHeading
      contextRef="S000088579Member"
      id="t_275_b34618db_4f20_4fa9_9da1_43427c64095c"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000088579Member"
      id="t_276_1144291f_8b16_4361_a9df_c58fd659616c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a fund of funds and seeks to track the investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;results of the BlackRock iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; 1-5 Year TIPS Ladder Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying Index is composed exclusively &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of underlying iShares iBonds TIPS ETFs (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds Term TIPS ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (as determined by BlackRock Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Services, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that themselves seek &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results corresponding to their own underlying indexes. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund invests primarily in the Underlying Funds and cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents, including shares of money market funds advised &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by BFA or its affiliates (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock Cash Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index that provides exposure to U.S. Treasury Inflation-Protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities (TIPS) spanning five consecutive maturity years. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index obtains this exposure by holding iShares&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; ETFs as constituents.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is reconstituted and rebalanced annually on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last business day in June of each year. Constituents for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are limited to the iBonds Term TIPS ETFs (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) associated with the asset class of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. On the reconstitution date the iBonds ETF with the nearest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity is removed from the Underlying Index and the iBonds ETF &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with a five-year maturity is included (based on the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider's eligibility criteria) - providing a rolling five-year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to U.S. Treasury inflation-protected public obligations &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). If an iBonds ETF is not available for a given maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year within the five-year range, the Underlying Index will hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fewer iBonds ETF constituents. On the rebalance date, each index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;constituent is assigned equal weighting. However, for the one-year&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; period after each rebalance date, changes in ETF prices may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause Underlying Index constituent weights to drift. At the next &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;annual rebalance constituent weights will be realigned.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Funds. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;selected are expected to have, in the aggregate, investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (based on factors such as market value and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry weightings), fundamental characteristics (such as return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in interest rates), maturity or credit ratings and yield) and liquidity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures similar to those of an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#160;or each Underlying Fund may or may not hold all of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the applicable Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to achieve its investment objective by investing, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;under normal circumstances, at least 80% of its net assets, plus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of any borrowings for investment purposes, in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities and instruments in the Fund&#x2019;s Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index and/or bonds included in the underlying index of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by the Index Provider, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an affiliated person of the Fund and of BFA, the Fund&#x2019;s investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser. The Index Provider determines the composition and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative weightings of the securities in the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000088579Member"
      id="t_277_4885910e_4f81_49b8_af87_02d9e17da3a9"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000088579Member_RiskLoseMoneyMember"
      id="t_286_dfc12c95_5466_20e9_4f02_38cb9cf6f2d7">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_USTreasuryObligationsRiskMember"
      id="t_287_0e3632cb_8c81_e0fb_4078_010248064493"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_InflationIndexedBondsRiskMember"
      id="t_288_5e30984a_c106_7c4e_f281_0f8d85f8baca"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_InterestRateRisksMember"
      id="t_289_0d502146_8122_026c_b5d3_0b4644389053"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_InvestmentInUnderlyingFundRiskMember"
      id="t_292_fc61eeef_8074_37aa_35ee_18f72b9528b4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds, so the Fund&#x2019;s investment performance and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks are likely to be directly related to those of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds. The Fund&#x2019;s NAV will change with changes in the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Funds and other assets that the Fund holds. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of an Underlying Fund may trade at a premium or discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bear the expenses charged by the Underlying Funds, and an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund may entail more expenses than a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Underlying Funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_MarketRiskMember"
      id="t_293_8e05cd8b_aa35_b1d5_c47b_1d146d9c1af8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_IndexRelatedRiskMember"
      id="t_295_7cddd605_022f_e058_2109_7c762e8d7925"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_AssetClassRiskMember"
      id="t_297_95d32caf_9a77_7c5c_99bf_824c4ed10fa3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_AssetsUnderManagementAUMRiskMember"
      id="t_290_3a166260_7813_2a67_a6bd_d03c2f398202"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_291_52567d3d_6a16_91f4_7833_0b076a399d15"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_ConcentrationRiskMember"
      id="t_294_966bc13b_1ec4_33a3_3da7_5133f37da113"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_CybersecurityRiskMember"
      id="t_296_604e790d_3075_a416_72e8_c5d63d851e04"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_IncomeRiskMember"
      id="t_298_32a6f1bf_ee43_90be_9093_eca44a6eb82c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_IssuerRiskMember"
      id="t_299_10ff7913_2617_ff89_40db_6a9030e955fb"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_ManagementRiskMember"
      id="t_300_b7f9208f_7160_bd98_c39e_6fef45c84a17"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_MarketTradingRiskMember"
      id="t_302_1e93e696_f99f_bcc0_331a_97ed187a4903"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_OperationalRiskMember"
      id="t_303_4312c448_1069_fe0c_eece_411fef118514"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_RiskOfInvestingInTheUSMember"
      id="t_304_3e71422d_c7d5_5355_eb0f_d6883a4ddea5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_SecuritiesLendingRiskMember"
      id="t_305_90579713_ca81_f1ae_de42_6f5fd3a6d7d6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000088579Member_SmallFundRiskMember"
      id="t_301_921d9286_0d6d_9fba_1cc5_a52d7f2bc4c8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088579Member_TrackingErrorRiskMember"
      id="t_306_46b5a788_4370_cae1_c16d_398fda9f02f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&#160;To the extent that the Fund seeks to achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective through investments in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds, the Fund may experience increased tracking error as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to investing directly in the securities or other assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the underlying indexes of the Underlying Funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000088579Member"
      id="t_278_181fe9ca_c58c_428d_96e5_61153a1bba8d"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000088579Member"
      id="t_279_18f560dc_f142_4fa1_babd_9bf25e24fc2f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000088579Member"
      id="t_311_a755907f_a1d3_505c_a50c_cd619cfa5697">As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report.</rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000088580Member"
      id="t_290_e019f333_135c_57b3_3c11_4b29f54611bb"> iSHARES&#xae; iBONDS&#xae;1-5 YEAR TREASURY LADDER ETF  Ticker: LDRTStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000088580Member"
      id="t_280_6c1adb87_b4d2_4dd1_9a8d_61c167ebc44a">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000088580Member"
      id="t_281_3be7058e_0108_412b_a716_3190cf3f6e45"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds 1-5 Year Treasury Ladder ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of a portfolio of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying iShares iBonds Treasury ETFs with maturities less than six years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000088580Member"
      id="t_282_8da26a30_b497_45ec_bf85_2e5a2e9841b9">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000088580Member"
      id="t_283_33ab4f90_761c_4dc8_98b8_f8ce22594752"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000088580Member"
      id="t_291_523d5069_e2ef_1d84_e9b3_ed3485c3e0b5">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:OperatingExpensesCaption
      contextRef="S000088580Member"
      id="t_292_484c0c32_96ef_0a7f_4282_c31b81d1fb8a">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000088580Member_C000254888Member"
      decimals="4"
      id="h_662_de097cee_4731_435b_8cde_a67362d0b323"
      unitRef="pure">0.0000</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000088580Member_C000254888Member"
      decimals="4"
      id="h_663_d76f26a8_6524_405f_a305_a52da7ad9f71"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000088580Member_C000254888Member"
      decimals="4"
      id="h_664_fc2486c1_ac73_484e_966b_8083d32b873d"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000088580Member_C000254888Member"
      decimals="4"
      id="h_665_195381b6_d17c_4f2c_ad4b_8a5b35320169"
      unitRef="pure">0.0007</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000088580Member_C000254888Member"
      decimals="4"
      id="h_666_244c2e03_a43d_4bf0_b960_8b470bfbefb2"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000088580Member"
      id="t_293_d7d37f70_1dad_2b3b_7d0f_38e2250ba9cb">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000088580Member"
      id="t_294_013daca2_657f_02c9_b649_88cdafb8f547">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000088580Member"
      id="t_295_ef3fe6fe_2e0d_8e97_fd8c_ebaad985706d">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000088580Member"
      id="t_296_6a242524_4c82_8047_20bc_82f47188fb6a">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000088580Member_C000254888Member"
      decimals="INF"
      id="h_667_7f396ed5_ee02_4259_a86c_ddd42e5fd201"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000088580Member_C000254888Member"
      decimals="INF"
      id="h_668_f2051d34_de40_4079_a4ba_4cac234d3826"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000088580Member"
      id="t_297_afd4b9d6_30a0_5264_f70a_819aaba2ad45">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000088580Member"
      id="t_298_ea2b9491_beeb_d6de_09f7_c21979fe461d">The Fund and the underlying funds in which the Fund invests (each, an &#x201c;Underlying Fund&#x201d; and collectively, the &#x201c;Underlying Funds&#x201d;) may pay transaction costs, such as commissions, when they buy and sell securities (or &#x201c;turn over&#x201d;their portfolios). A higher portfolio turnover rate for the Fund or Underlying Funds may indicate higher transaction costs and may cause the Fund or the Underlying Funds to incur increased expenses and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example(except costs to Underlying Funds included as part of Acquired Fund Fees and Expenses), affect the Fund&#x2019;s performance. Because the Fund's inception date (November 7, 2024) is after the most recent FYE, there is no reportable turnover.</rr:PortfolioTurnoverTextBlock>
    <rr:StrategyHeading
      contextRef="S000088580Member"
      id="t_285_5b7d8de4_a0b8_49ee_9673_8d5391b5527d"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000088580Member"
      id="t_286_a1379bcb_da76_4840_a004_c00ccc03d180"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a fund of funds and seeks to track the investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;results of the BlackRock iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; 1-5 Year Treasury Ladder Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying Index is composed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exclusively of underlying iShares iBonds Treasury ETFs (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Term Treasury ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock Index Services, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;themselves seek investment results corresponding to their own &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying indexes. The Fund invests primarily in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds and cash and cash equivalents, including shares of money &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market funds advised by BFA or its affiliates (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock Cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index that provides exposure to U.S. Treasury bonds spanning five &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consecutive maturity years. The Underlying Index obtains this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure by holding iShares&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; ETFs as constituents.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is reconstituted and rebalanced annually on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the last business day in June of each year. Constituents for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are limited to the iBonds Term Treasury ETFs (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBonds ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) associated with the asset class of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. On the reconstitution date the iBonds ETF with the nearest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity is removed from the Underlying Index and the iBonds ETF &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with a five-year maturity is included (based on the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider's eligibility criteria) - providing a rolling five-year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to U.S. Treasury bonds. If an iBonds ETF is not available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for a given maturity year within the five-year range, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index will hold fewer iBonds ETF constituents. On the rebalance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, each index constituent is assigned equal weighting. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, for the one-year period after each rebalance date, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in ETF prices may cause Underlying Index constituent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weights to drift. At the next annual rebalance constituent weights &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be realigned.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund and the Underlying Funds. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an indexing strategy that involves investing in a representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sample of securities that collectively has an investment profile &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;similar to that of an applicable underlying index. The securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;selected are expected to have, in the aggregate, investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics (based on factors such as market value and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry weightings), fundamental characteristics (such as return &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in interest rates), maturity or credit ratings and yield) and liquidity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures similar to those of an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#160;or each Underlying Fund may or may not hold all of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the applicable Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to achieve its investment objective by investing, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;under normal circumstances, at least 80% of its net assets, plus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the amount of any borrowings for investment purposes, in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities and instruments in the Fund&#x2019;s Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index and/or bonds included in the underlying index of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by the Index Provider, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&#160;an affiliated person of the Fund and of BFA, the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment adviser. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000088580Member"
      id="t_287_a6b3ecd7_36ba_4368_ab1c_fc0a078b5128"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000088580Member_RiskLoseMoneyMember"
      id="t_299_6844f7bf_70dd_34eb_70b8_bf9b314f086d">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_USTreasuryObligationsRiskMember"
      id="t_301_24219fd8_eba6_3b61_4fef_3c4a48ceb20d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_InterestRateRisksMember"
      id="t_302_61b72c93_8dc5_978c_b9dd_b3eb1ecdb0e2">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_InvestmentInUnderlyingFundRiskMember"
      id="t_303_34037bef_64b9_6caa_4e62_4540cb57758e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Investment in Underlying Fund Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Funds, so the Fund&#x2019;s investment performance and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks are likely to be directly related to those of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds. The Fund&#x2019;s NAV will change with changes in the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Funds and other assets that the Fund holds. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of an Underlying Fund may trade at a premium or discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Underlying Fund&#x2019;s NAV. Investors in the Fund will indirectly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bear the expenses charged by the Underlying Funds, and an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund may entail more expenses than a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Underlying Funds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_MarketRiskMember"
      id="t_304_9e2c88bb_0afc_41b0_8579_3a92270ebce4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_IndexRelatedRiskMember"
      id="t_305_9c2b944e_4f03_0b1a_7202_34ef443ad462">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_AssetClassRiskMember"
      id="t_306_d1645417_da6a_7f43_57f0_9a78b41739cd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_AssetsUnderManagementAUMRiskMember"
      id="t_307_77e460a8_a913_2221_11cd_7640afe7b529">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_308_4e7b81a1_59e0_f102_75d0_057742b04561">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_ConcentrationRiskMember"
      id="t_309_1391e5cd_65dc_703c_72b8_d929049c416f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_CybersecurityRiskMember"
      id="t_310_a3d96785_5c94_2bda_4d88_2e83ae43ab60">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_IncomeRiskMember"
      id="t_311_41b3ecf0_8a1e_7901_d733_b088de3fcad7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_IssuerRiskMember"
      id="t_312_ff67ef74_1d7c_5571_d252_e01a6fc74328">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_ManagementRiskMember"
      id="t_313_39e5f608_2211_a47b_143e_60fee4b9bf4a">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_MarketTradingRiskMember"
      id="t_314_6b1097ca_ebc8_550b_a4b9_1181f2dac823">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_OperationalRiskMember"
      id="t_315_59251c95_a16c_309f_f9a9_91c21dd49dd4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_RiskOfInvestingInTheUSMember"
      id="t_316_bd9abe6c_7d65_0d23_b1be_e9da05e892ab">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_SecuritiesLendingRiskMember"
      id="t_319_ef9900cc_aa8d_f28b_932c_227176ef97d5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000088580Member_SmallFundRiskMember"
      id="t_318_4c862155_dc71_3423_2565_003d3532bfaa">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000088580Member_TrackingErrorRiskMember"
      id="t_317_5c07651b_1c1d_a525_76e2_589972574fc3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&#160;To the extent that the Fund seeks to achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective through investments in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Funds, the Fund may experience increased tracking error as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;compared to investing directly in the securities or other assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the underlying indexes of the Underlying Funds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000088580Member"
      id="t_288_c3785625_6e06_469d_b3da_02d19dc1d5de"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000088580Member"
      id="t_289_9d77d4bc_6be5_4354_aa1b_fd31b8edbd80"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000088580Member"
      id="t_300_b6c69239_1fc0_1fef_d8ce_9daf5691b885">As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report.</rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000042353Member"
      id="t_687_f431c087_4d5a_e4d1_f9fe_c3eb72d73e83"> iSHARES&#xae; 0-5 YEAR HIGH YIELD CORPORATE BOND ETF  Ticker: SHYGStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000042353Member"
      id="t_290_029b57b5_b79e_450f_a0e6_1c13b3baa527">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000042353Member"
      id="t_291_67515594_a325_4320_8d02_a379dbc97556"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares 0-5 Year High Yield Corporate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield corporate bonds with remaining maturities of less than five years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000042353Member"
      id="t_292_e69c1970_70a9_44f2_a7b9_32940400e9dc">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000042353Member"
      id="t_293_53d78188_01ea_4787_9586_2da50e276c0e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000042353Member"
      id="t_688_1651a2c1_8c68_4305_0f6d_0f6c70c85598">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_669_7f6abcf9_a6a3_434c_8023_4f189ca5f464"
      unitRef="pure">0.0030</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_670_4e273662_d7db_4e24_8320_c7e9446a5c63"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_671_5d5347c3_a282_44ee_99af_0c47de2330cc"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_672_edf178df_e85a_4524_9f3b_dd1978bd5a6e"
      unitRef="pure">0.0030</rr:ExpensesOverAssets>
    <rr:ExpensesRestatedToReflectCurrent
      contextRef="S000042353Member"
      id="t_730_b741fc56_e194_e035_c98c_41afbb55beb1">The expense information in the table has been restated to reflect current fees.</rr:ExpensesRestatedToReflectCurrent>
    <rr:ExpenseExampleHeading
      contextRef="S000042353Member"
      id="t_689_bba9bc13_b946_2124_0e06_00402df916af">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000042353Member"
      id="t_729_3e8ed66b_1e4d_9672_8e59_0f8c534628fe">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042353Member_C000131291Member"
      decimals="INF"
      id="h_673_c3383a7e_3495_4ee7_b7a8_0ea17b84eb54"
      unitRef="USD">31</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042353Member_C000131291Member"
      decimals="INF"
      id="h_674_ce49365b_ba0b_4cbf_8008_a45aee7cf5b5"
      unitRef="USD">97</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042353Member_C000131291Member"
      decimals="INF"
      id="h_675_02eaf602_68a7_4f7e_9e78_8ce9541c30de"
      unitRef="USD">169</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042353Member_C000131291Member"
      decimals="INF"
      id="h_676_63379916_549f_4553_a683_9078af8f4e7b"
      unitRef="USD">381</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000042353Member"
      id="t_691_cf62ca6a_b75f_a643_b244_c0fdd589b176">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000042353Member"
      id="t_692_92192411_311a_29df_736a_d2c879fafd8b">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 36% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000042353Member"
      decimals="4"
      id="h_677_eb947a7c_7d5b_4849_9a97_baf74c61431f"
      unitRef="pure">0.36</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000042353Member"
      id="t_295_14bd39bb_fd92_40e8_a8fe_e050be8904c6"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000042353Member"
      id="t_296_261dfe93_4186_4a69_bc1f_d337f4199c42"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Markit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBoxx&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; USD Liquid High Yield 0-5 Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is designed to reflect the performance of U.S. dollar-denominated&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; high yield (as determined by Markit Indices Limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate debt. High yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds are also known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and are generally rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below investment-grade. The Underlying Index offers exposure to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid (according to Markit&#x2019;s liquidity screens, which could vary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from other measures of liquidity) U.S. dollar-denominated high &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yield corporate bonds maturing between zero and five years and is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced on a monthly basis. Only bonds with $350 million &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum face value per bond are included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, provided they are trading at a minimum price in accordance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with Markit's liquidity screens. The Underlying Index uses a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market-value weighted methodology with a cap on each issuer of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;3%. As of October 31, 2024, a significant portion of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is represented by&#160;&#160;securities of companies in the consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services and industrials industries or sectors. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components of the Underlying Index are likely to change over &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Markit, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000042353Member"
      id="t_706_91e9603c_64e3_a69f_27dc_d06ae5851b8f"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000042353Member"
      id="t_297_85ccf48c_31e7_4267_b9c9_bb650a593435"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000042353Member_RiskLoseMoneyMember"
      id="t_693_ec6655fd_d5dd_4b2e_9bed_dd1363e36093">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_HighYieldSecuritiesRiskMember"
      id="t_707_2655be75_bfe0_3fe9_ff39_8fa79efdfbc4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_CreditRisksMember"
      id="t_708_58fcd6f8_0852_e1d8_f73e_a4bdd24daac8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_MarketRiskMember"
      id="t_709_ce51d66e_1fff_3375_06b5_a1910b0d75e7"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_IndexRelatedRiskMember"
      id="t_710_995dba59_5422_a1c8_246f_80c893bb0643"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_AssetClassRiskMember"
      id="t_711_e47bf41c_ed12_c5c9_e294_ffbe5949fd68"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_712_868d4412_7b2f_8545_776e_4d60ceaba802"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000042353Member_CallRiskMember"
      id="t_713_2063eec4_20f0_36d3_17ec_a5a81a6f84e6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_ConcentrationRiskMember"
      id="t_714_ce4df93f_c1e5_7244_f165_21bd43624753"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000042353Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_715_be208161_9861_fe65_0b87_2caf6b787659"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_CybersecurityRiskMember"
      id="t_716_c33d4332_7781_55b4_3f81_b35b1db393d2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_IlliquidInvestmentsRiskMember"
      id="t_717_8ba6ebac_32a4_00fa_9ca7_c7f3dfb05042"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_IncomeRiskMember"
      id="t_718_8ddc827e_5434_ff26_21e7_364bb85a23a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_IndustrialCompaniesRiskMember"
      id="t_719_da957089_0cab_c0b1_a6b3_d7b23173726e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_InterestRateRisksMember"
      id="t_720_463fd679_8d95_9c32_60af_37dbca77acb5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_IssuerRiskMember"
      id="t_721_d2227e30_d0f0_90cc_5298_cbe661d18018"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_ManagementRiskMember"
      id="t_722_d49ec8cb_f1b9_e221_2613_3f9469b6d62b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_MarketTradingRiskMember"
      id="t_723_a84810b4_804a_8798_61e2_741f57751d01"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_OperationalRiskMember"
      id="t_724_2f808405_e759_4beb_4c68_eb598a153c55"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_RiskOfInvestingInTheUSMember"
      id="t_725_70ba9d9a_7c1d_458b_f844_9fd73e49b992"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_SecuritiesLendingRiskMember"
      id="t_726_42cbce6c_0a9d_8b7e_3285_b362c000e44a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_TrackingErrorRiskMember"
      id="t_727_526147c6_ed7a_f961_ada6_e6452778e1a9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042353Member_ValuationRiskMember"
      id="t_728_e6222976_20ae_42c2_f7cf_89349aec347c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000042353Member"
      id="t_298_88a69569_140f_49ac_a6d7_4c12c2de4c6c"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000042353Member"
      id="t_694_dfdf389c_9408_9aee_10cb_132f157e965e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000042353Member"
      id="t_695_b74c16c8_715b_fcdb_1451_f55096acb8b3">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000042353Member"
      id="t_698_aec8918f_62db_0e4b_c5a7_08c19cdb6455">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000042353Member"
      id="t_697_cef6f8ed_aa3d_abee_6829_0bec793dbd6f">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000042353Member"
      id="t_696_429a2e25_b141_ff5f_c4b7_3e7088698c7d">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000042353Member"
      id="t_699_9ad9e79f_b5ca_b966_898e_4818b2879cc8"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000042353Member"
      id="t_700_c4650c24_c78c_e136_98c3_19f02e25b9c5"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 27.87pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 27.87pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 5.3pt;"&gt;6.60%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 27.87pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 27.87pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-11.43%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000042353Member_C000131291Member"
      id="h_681_f313b3b8_48fb_417c_b3df_d8f9c570d157">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_682_25280733_cd9a_4f3b_b746_69ffcd994153"
      unitRef="pure">0.0660</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000042353Member_C000131291Member"
      id="h_683_0d9d66ee_d1a1_4c21_a597_df11c642855c">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000042353Member_C000131291Member"
      id="h_684_676e8967_1a34_4961_82fe_892700953f75">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_685_b9e02076_d70a_4784_a767_189fda77ce1a"
      unitRef="pure">-0.1143</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000042353Member_C000131291Member"
      id="h_686_e8844d3d_02e1_4756_8117_a3d4c302871c">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000042353Member"
      id="t_300_b8f1fd6b_a9c1_482a_9278_a6d6eeea173c">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000042353Member_C000131291Member"
      id="t_701_50c37791_bfd2_986d_e3b6_51a716590346">2013-10-15</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_687_8ba6c77a_b655_4950_8831_08e89cf5498e"
      unitRef="pure">0.0802</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_688_f686da3b_70b4_4d5f_a0d1_45c1cfe497c6"
      unitRef="pure">0.0424</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042353Member_C000131291Member"
      decimals="4"
      id="h_689_c9415f25_6168_4f09_b44b_8c48e570dd12"
      unitRef="pure">0.0445</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042353Member_C000131291Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_690_5bbf03e0_b8fb_4bc8_b603_b4834abaabab"
      unitRef="pure">0.0501</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042353Member_C000131291Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_691_5e5e6af8_d425_44ca_865a_595f6b0ce326"
      unitRef="pure">0.0180</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042353Member_C000131291Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_692_f086b96f_c052_41ac_a6c5_4f7c347257f7"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042353Member_C000131291Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_693_1f16817f_d621_42ba_a8fa_a6b56b312292"
      unitRef="pure">0.0469</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042353Member_C000131291Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_694_a959213a_39a5_4390_b0e4_ac275a6472c3"
      unitRef="pure">0.0215</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042353Member_C000131291Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_695_66e2e12e_4db1_4014_bf70_32aa8425c784"
      unitRef="pure">0.0230</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042353Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_696_d2314cbd_fa18_44cc_81be_f7e1d990b8ca"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042353Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_697_4d831936_c6fa_4908_80cc_cfd86e2bf51b"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042353Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_698_446ef531_d765_4505_9658_b17c0b791e4b"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042353Member_MarkitIBoxxUSDLiquidHighYield05IndexMember"
      decimals="4"
      id="h_699_f6e17482_42a5_48c5_b630_e177198ce63d"
      unitRef="pure">0.0801</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042353Member_MarkitIBoxxUSDLiquidHighYield05IndexMember"
      decimals="4"
      id="h_700_63490267_78d1_43e2_8aaa_c0f52dd2cfca"
      unitRef="pure">0.0454</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042353Member_MarkitIBoxxUSDLiquidHighYield05IndexMember"
      decimals="4"
      id="h_701_0b2c1a6b_46c4_4edb_b121_9ccd6236d759"
      unitRef="pure">0.0476</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000042353Member"
      id="t_702_2460a8fa_a384_d306_abb3_7ffc45619884"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000042353Member"
      id="t_703_fda1b866_5166_ec2e_9be6_77f7bbbb9273">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000042353Member"
      id="t_704_ec3cc902_2398_c609_c471_2d8e3adea465">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000042353Member"
      id="t_705_b97e446a_8f13_a856_e638_78343aa06759">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000042354Member"
      id="t_720_2f788254_3a28_1cce_dd80_f8daab5f089c"> iSHARES&#xae;&#160;0-5 YEAR INVESTMENT GRADE CORPORATE BOND ETF  Ticker: SLQDStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000042354Member"
      id="t_301_aa003c03_ae73_4c48_b19e_6cf3a18f13f8">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000042354Member"
      id="t_302_628e41e9_1e3f_4e3f_9539_edb610bda474"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares 0-5 Year Investment Grade Corporate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollar-denominated, investment-grade corporate bonds with remaining maturities of less than five years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000042354Member"
      id="t_303_7a735e09_b83e_4c2c_a0cc_fc71e93326e9">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000042354Member"
      id="t_304_30367a90_3033_45a3_8253_d38f5fc21296"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000042354Member"
      id="t_721_d2c5c774_ad2d_d0c5_37b8_6de1d5d9e2e1">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_702_60b64bbe_6f9d_4a1a_b385_ea855acc321b"
      unitRef="pure">0.0006</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_703_410f8be0_e17e_4f3c_9931_0812158515dc"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_704_1c1ba5d2_a4de_4257_8e7f_b7de5686f54f"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_705_76e304a9_ef1a_48dd_8e4d_704f018c2587"
      unitRef="pure">0.0006</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000042354Member"
      id="t_722_26a1cb98_71d0_e628_a18c_e7d1284175d2">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000042354Member"
      id="t_723_f8b61ff3_e188_0814_a547_a302e9d923e9">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000042354Member_C000131292Member"
      decimals="INF"
      id="h_706_f8a4a067_dfb3_4c14_a691_9540c539a743"
      unitRef="USD">6</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000042354Member_C000131292Member"
      decimals="INF"
      id="h_707_65e18f8a_172a_4ca1_9878_245f6009852c"
      unitRef="USD">19</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000042354Member_C000131292Member"
      decimals="INF"
      id="h_708_460effbc_7638_4999_b0db_ffa9e9c981ec"
      unitRef="USD">34</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000042354Member_C000131292Member"
      decimals="INF"
      id="h_709_06c93f01_de2e_4fdf_991c_dc684a19145d"
      unitRef="USD">77</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000042354Member"
      id="t_724_9bf82176_e569_561d_0bc5_eddb8a9bf856">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000042354Member"
      id="t_725_e231b079_7b71_0972_4045_6fb4f6371244">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 24% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000042354Member"
      decimals="4"
      id="h_710_6022f0e5_a05f_4f5c_a182_f6b983c4099d"
      unitRef="pure">0.24</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000042354Member"
      id="t_306_53a12c57_eaf1_4fe6_907e_c60cb567a0cf"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000042354Member"
      id="t_307_df03c47e_f9f5_4041_83c8_af82c6ee6f21"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Markit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;iBoxx&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; USD Liquid Investment Grade 0-5 Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is designed to reflect the performance of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated investment-grade (as determined by Markit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indices Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt.&#160;&#160;The Underlying Index offers exposure to liquid (according to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Markit&#x2019;s liquidity screens, which could vary from other measures &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of liquidity) corporate bonds maturing between zero and five years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and is rebalanced on a monthly basis. Only bonds from large &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers with at least $1 billion in aggregate outstanding issuance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and $500 million face value per bond are included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. The Underlying Index uses a market-value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted methodology with a cap on each issuer of 3%. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by&#160;&#160;securities of companies in the financials industry &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or sector. The components of the Underlying Index are likely to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Markit, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000042354Member"
      id="t_726_0f762953_d239_e5a5_8213_f383867b4b52"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000042354Member"
      id="t_308_8e57fc30_6c36_450e_9aae_73c2745ba9d0"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000042354Member_RiskLoseMoneyMember"
      id="t_727_cc4715b6_274a_a970_4fe4_958d17dd5d7b">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_InterestRateRisksMember"
      id="t_735_c5f3217e_c6ab_d536_9770_204c75c48df0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_CreditRisksMember"
      id="t_736_04bbfc55_88d1_eb0f_d068_c41b8f8ff1e4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_MarketRiskMember"
      id="t_737_30280f53_cd06_f124_2614_3ad9b9f57b78"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_IndexRelatedRiskMember"
      id="t_738_784b9ed5_890a_ce46_d327_871a8c9d7e3c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_AssetClassRiskMember"
      id="t_739_1b0ba26a_ff8f_b699_16cb_f79948bc70c2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_740_cd70db33_5c16_d9f8_c708_0ffbe88a7e31"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000042354Member_CallRiskMember"
      id="t_746_9f7e3d74_33db_53c6_1f93_08d510ebef04"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_ConcentrationRiskMember"
      id="t_745_b5e5c3c2_d447_9614_c813_740ccd1ab82f"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_CybersecurityRiskMember"
      id="t_743_b61f2dcd_78f6_89a6_c713_27956a3abe59"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_FinancialCompaniesRiskMember"
      id="t_744_9bbc31bd_8cd8_7e4d_28aa_b7941d52ec82"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_IlliquidInvestmentsRiskMember"
      id="t_741_923dbbc1_017f_3194_d3c3_4f1b48b186d1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_IncomeRiskMember"
      id="t_742_ed45521d_8d4a_b702_cddc_c74fe3f522bf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_IssuerRiskMember"
      id="t_747_0e4bf942_0876_0679_bf2a_a50c9a9b9ed2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_ManagementRiskMember"
      id="t_748_4c3f8b7d_df24_2b7f_a950_abc94d2048c8"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_MarketTradingRiskMember"
      id="t_749_e4a32a2c_cea3_0a80_dd08_1235150b000e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_OperationalRiskMember"
      id="t_750_9c0d7ce3_64fa_81ad_f747_fff811eb2c73"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_RelianceOnTradingPartnersRiskMember"
      id="t_751_9d900cf9_49d9_9d7d_b9e6_15fc5e923b4c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_RiskOfInvestingInChinaMember"
      id="t_762_0adb5d68_c979_0442_a883_1c9636b8765f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_763_686b8759_04fe_877a_80e5_e6f6a0eb910a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_RiskOfInvestingInTheUSMember"
      id="t_764_843cfa55_bd05_c629_a583_22c30d209935">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_SecuritiesLendingRiskMember"
      id="t_765_207ff379_6061_6aec_5c3a_cd1ad069ea78">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_TrackingErrorRiskMember"
      id="t_766_787fa90c_430e_9138_6ca1_a641f7163c2d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000042354Member_ValuationRiskMember"
      id="t_767_dac4fb8e_40d9_f26c_3ace_5122ee245d70">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000042354Member"
      id="t_309_e5b9b4bc_02f2_4f50_8ba3_a4c4f11f6c33"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000042354Member"
      id="t_728_56c1ea2a_6bbd_18b5_b879_a8f03a14bb1b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000042354Member"
      id="t_729_12ef0fea_3d49_ab33_4ab6_750d3b659250">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000042354Member"
      id="t_732_0a1ffb2a_cc73_0ae7_1e49_af4b4a50ab9a">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000042354Member"
      id="t_730_a9d1e9dc_6008_977d_a83d_f245beb6bfe7">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000042354Member"
      id="t_731_2df4ff5d_b8c4_ea75_554a_10ec03208ff1">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000042354Member"
      id="t_733_d7581606_1d0b_27f0_bcad_e4129a3ef601"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000042354Member"
      id="t_734_8101717e_f7ac_6c27_b28d_308dcd9692ef"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.32pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.32pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.71pt;"&gt;4.64%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.32pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.32pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-3.11%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000042354Member_C000131292Member"
      id="h_714_3a598e6e_8b69_45aa_b140_d52d83b05ef4">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_715_f60dcde5_e8a5_4a0b_8c9e_17d4161beb03"
      unitRef="pure">0.0464</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000042354Member_C000131292Member"
      id="h_716_26502a25_1af1_434a_a88f_e22c0d091b51">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000042354Member_C000131292Member"
      id="h_717_2880dfa7_4b1b_46dc_8ec7_adb5840e726b">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_718_7a773285_cd7b_49f9_af5a_980cd32d8b56"
      unitRef="pure">-0.0311</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000042354Member_C000131292Member"
      id="h_719_70a21122_e35d_4227_8095_7d04040dd2dc">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000042354Member"
      id="t_311_8ace5632_35fc_41da_b2e3_fb30a8d74090">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000042354Member_C000131292Member"
      id="t_761_3d5225e9_874e_2d4a_3442_00f637c016b9">2013-10-15</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_720_78f33f4e_d5f3_4189_bd9c_072473635717"
      unitRef="pure">0.0501</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_721_4f94b781_56f4_4fdf_af25_67e22a56abb6"
      unitRef="pure">0.0208</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042354Member_C000131292Member"
      decimals="4"
      id="h_722_37c3a786_675e_405d_9fd4_139be60b38cb"
      unitRef="pure">0.0229</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042354Member_C000131292Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_723_8602b553_612f_40f5_94d1_980018998bac"
      unitRef="pure">0.0343</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042354Member_C000131292Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_724_1d3de0bf_e71b_4172_8427_d1250b0e2cdf"
      unitRef="pure">0.0102</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042354Member_C000131292Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_725_dc18dcb6_7f3e_4da9_a973_63166084a859"
      unitRef="pure">0.0131</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042354Member_C000131292Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_726_ca88103b_6609_4687_84ad_caa29cc4278b"
      unitRef="pure">0.0295</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042354Member_C000131292Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_727_2ed95270_2d00_443d_b5c2_168bd7c96b05"
      unitRef="pure">0.0114</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042354Member_C000131292Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_728_5905daa8_5e90_4f2c_bfe7_fef62bdf1476"
      unitRef="pure">0.0133</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042354Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_729_cabfe502_ef1b_411d_b899_f0840f6fffb1"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042354Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_730_af97ef37_5f04_47d4_bbfc_1e804133507e"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042354Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_731_8614084e_82fb_45a9_8557_7269de79191e"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000042354Member_MarkitIBoxxUSDLiquidInvestmentGrade05IndexMember"
      decimals="4"
      id="h_732_77a51599_df6f_4172_9e76_644e447e7777"
      unitRef="pure">0.0504</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000042354Member_MarkitIBoxxUSDLiquidInvestmentGrade05IndexMember"
      decimals="4"
      id="h_733_f3258dee_57c2_472b_ae0b_de598e7e643e"
      unitRef="pure">0.0211</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000042354Member_MarkitIBoxxUSDLiquidInvestmentGrade05IndexMember"
      decimals="4"
      id="h_734_7d821d71_c9b8_40c7_9d0c_430c79a2938c"
      unitRef="pure">0.0235</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000042354Member"
      id="t_757_62543ffd_0853_7db4_743c_1749fcebd3f7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000042354Member"
      id="t_758_887fe8ba_17b0_c3f3_f189_ee05df1a5762">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000042354Member"
      id="t_759_bd7d3e28_5242_cae4_bb41_4321fca2b4d5">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000042354Member"
      id="t_760_dc9c1c32_fb7b_eb8e_0eab_8e36a05bf4de">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000035916Member"
      id="t_753_eb984a19_0c4f_7847_ab64_48b6d2cab841"> iSHARES&#xae; Aaa - A RATED CORPORATE  BOND ETF  Ticker: QLTAStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000035916Member"
      id="t_312_6cbde059_c235_4190_a03a_807af25ad5cf">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000035916Member"
      id="t_313_cfcdcd3e_f9ab_4adc_852c_44bb42c4a8e8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Aaa - A Rated Corporate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of Aaa to A, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalently rated, fixed rate U.S. dollar-denominated bonds issued by U.S. and non-U.S. corporations.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000035916Member"
      id="t_314_0c082ff1_8077_4c77_9ff3_e2ae9bed5f0d">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000035916Member"
      id="t_315_6e9b58fc_9b9b_4033_87db_27542eff31bd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000035916Member"
      id="t_754_02e3cb6b_8e8c_90a1_e061_29dae2c76bb7">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_735_191f0b60_7739_4f29_ad4a_233794516fc4"
      unitRef="pure">0.0015</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_736_bef5f84e_0655_4046_b00c_44cd44041cd1"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_737_a9b91b1d_b8e4_4103_ad7f_bfe27a6206be"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_738_bd7e1aab_16ea_417d_9889_6af799a375d1"
      unitRef="pure">0.0015</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000035916Member"
      id="t_755_211b0790_398d_93e8_8eb2_d62c7ed927f2">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000035916Member"
      id="t_756_1b92ad6b_26b1_3e7d_4e26_c1b73ebd098a"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000035916Member_C000110081Member"
      decimals="INF"
      id="h_739_7c3cd6d1_e1bc_49fe_8347_98dfb269123c"
      unitRef="USD">15</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000035916Member_C000110081Member"
      decimals="INF"
      id="h_740_d6c1fa44_ca02_4537_9767_815db633b8b2"
      unitRef="USD">48</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000035916Member_C000110081Member"
      decimals="INF"
      id="h_741_b271e6db_1cad_4c81_9ec1_40928d5411f7"
      unitRef="USD">85</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000035916Member_C000110081Member"
      decimals="INF"
      id="h_742_1c3ca5d7_c597_4d83_96a8_81cca4f8627a"
      unitRef="USD">192</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000035916Member"
      id="t_757_57c00615_46d8_abf3_843a_a25a2a049830">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000035916Member"
      id="t_758_224727c9_82fb_1307_0d21_efec5f1b85bc">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 16% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000035916Member"
      decimals="4"
      id="h_743_60cb1a41_9c41_43cb_bf46_c138452d4487"
      unitRef="pure">0.16</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000035916Member"
      id="t_317_7a90f6b4_8a35_4c5a_a27f_c0c5c34c9781"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000035916Member"
      id="t_318_c6266fb4_2143_45d9_9c59_0a40c3950865"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Corporate Aaa - A Capped Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is a subset of the Bloomberg U.S. Corporate Index, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures the performance of the Aaa &#x2013; A rated range of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate, U.S. dollar-denominated taxable, corporate bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market. The Underlying Index is market capitalization-weighted &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with a 3% cap on any one issuer and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;distribution of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight across the remaining issuers in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes U.S. dollar-denominated securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly-issued by U.S. and non-U.S. industrials, utility and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial corporate issuers, with maturities of one year or more, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that have $500 million or more of outstanding face value. Each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate bond must be registered with the SEC, have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at issuance, or have been offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with registration rights. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;only securities rated A3 by Moody's Investors Service, Inc. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or higher (or the equivalent on another rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agency's scale) will be included in the Underlying Index. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings from each of Fitch Ratings, Inc., Moody&#x2019;s and S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings are available, the median rating is used to determine &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligibility. When ratings from only two of the three rating agencies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are available, the lower rating is used to determine eligibility. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When a rating from only one of these agencies is available, that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rating is used to determine eligibility. The securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest in non-U.S. issuers to the extent necessary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for it to track the Underlying Index. As of October 31, 2024, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;18.59% of the Underlying Index was composed of bonds issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-U.S. issuers from the following countries or regions: &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Australia, Belgium, Bermuda, Canada, China, France, Germany, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Hong Kong, Japan, Mexico, the Netherlands, Spain, Switzerland, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Taiwan and the United Kingdom (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.K.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). As of October 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2024, a significant portion of the Underlying Index is represented &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by&#160;&#160;securities of companies in the consumer goods and services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and financials industries or sectors. The components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg Index Services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000035916Member"
      id="t_759_48cb0935_8f58_f5da_86d6_ef0aed122c0d"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000035916Member"
      id="t_319_8648dba2_d43a_4ed2_8990_46eb009a70ef"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000035916Member_RiskLoseMoneyMember"
      id="t_760_dac81d3c_a725_af62_4b58_e05e61defe89">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_CreditRisksMember"
      id="t_761_a711897f_92fd_399e_f04f_5b4f7b310939"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_InterestRateRisksMember"
      id="t_762_f14a0734_afcd_464e_a76d_867b05b8f06b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_MarketRiskMember"
      id="t_763_5580c234_3269_8200_db25_1e78a0b91fee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_IndexRelatedRiskMember"
      id="t_764_3a03ef6c_7998_7c83_7804_574886f3ee77"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_AssetClassRiskMember"
      id="t_765_58c6d612_375d_4452_3053_223d473d99a9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_766_e9075ef5_aeda_884e_660d_d505eeb013a3"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_CallRiskMember"
      id="t_767_17929b65_ee37_a338_6411_44b7ad3735ff"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_ConcentrationRiskMember"
      id="t_768_142b56d5_09b7_b2ea_568e_88ed2e4dd35c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_769_300a891d_d733_cd4d_ea2d_b02adbf505af"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_CybersecurityRiskMember"
      id="t_770_1f35887c_a61b_ba74_81a3_4ed95b77a23a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_FinancialCompaniesRiskMember"
      id="t_771_0d710291_261b_961d_fe65_9310a45a5b1b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_IlliquidInvestmentsRiskMember"
      id="t_772_9da06c31_8e76_dd29_8d4f_0fe6cfbdcce3"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_IncomeRiskMember"
      id="t_773_52fa0009_b8ad_ec86_7574_6e04ccd517ad"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_IssuerRiskMember"
      id="t_774_2eda5b2d_2f73_bf5a_56cb_94b441a5d751"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_ManagementRiskMember"
      id="t_775_0c74cd8f_f0f5_52d6_e168_8dbcbaf41745"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_MarketTradingRiskMember"
      id="t_776_19211d12_3f96_0c9d_05e9_b362322c03fc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_OperationalRiskMember"
      id="t_777_a24620d5_ef86_9298_67dd_26d634ec8526"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_RelianceOnTradingPartnersRiskMember"
      id="t_778_ab88cea4_f8d7_6a0b_4322_54b12034f0fd"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_RiskOfInvestingInChinaMember"
      id="t_798_214242c9_441c_2f41_4dff_afce09071234">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_799_d0cd20a1_d2cd_8b35_a4ea_ff29498d70bc">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_RiskOfInvestingInTheUSMember"
      id="t_800_224ead31_1bab_67ab_636f_28b23d27fd89">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_SecuritiesLendingRiskMember"
      id="t_801_2d0132ae_6504_b0a8_2e8d_9c17494917d3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_TrackingErrorRiskMember"
      id="t_802_846f425e_7849_4b4a_ced7_9a325f4962b0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035916Member_ValuationRiskMember"
      id="t_803_208f7c8c_92b6_62d9_5ac6_47b68d8cbdc3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000035916Member"
      id="t_320_918973d3_31d0_4204_959e_b64cdc167e9a"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000035916Member"
      id="t_784_41177a4b_6799_681e_8c2c_cf30ae551299"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000035916Member"
      id="t_785_f1925605_cba2_c07d_761a_7b53fa1b40c4">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000035916Member"
      id="t_786_d666fb8e_bf2e_980a_28ce_84b5428ecd01">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000035916Member"
      id="t_787_b6e38c68_09ad_7c58_48d4_fa453ce137fe">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000035916Member"
      id="t_788_744d7303_5c86_c45d_8144_a319e2086fef">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000035916Member"
      id="t_790_c86500de_872a_b0f4_bf73_db16c60eac1e"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000035916Member"
      id="t_789_88eb4130_8844_7ef3_a5eb_9d2619dc32bd"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 22.66pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 22.66pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;8.02%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 22.66pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 22.66pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.29pt;"&gt;-7.10%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000035916Member_C000110081Member"
      id="h_747_6e0ef9b9_24da_4a5e_9ec7_1fc33373145a">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_748_ba9c4777_9ce6_47ff_996a_88b87ed3379e"
      unitRef="pure">0.0802</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000035916Member_C000110081Member"
      id="h_749_a4065d42_0404_4899_9a10_d21319b31c90">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000035916Member_C000110081Member"
      id="h_750_1ac22e4d_196a_4fb5_bb02_18d5d5837500">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_751_27f55fb8_27f9_469f_adb1_dbf3baaa32ff"
      unitRef="pure">-0.0710</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000035916Member_C000110081Member"
      id="h_752_dcf4dcc1_34e6_4550_8436_234eaec0ef20">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000035916Member"
      id="t_322_8aa5af5a_d426_490e_b336_526c9ae20602">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000035916Member_C000110081Member"
      id="t_791_4f223393_18cb_fd67_5dd1_012720055956">2012-02-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_753_ba9220c6_d6b4_4fd1_ae7d_2f150770e14a"
      unitRef="pure">0.0135</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_754_ffdc7f3a_d31c_4ef1_bc44_9b3b1ccda988"
      unitRef="pure">-0.0017</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035916Member_C000110081Member"
      decimals="4"
      id="h_755_b0f0af64_d014_4503_87ab_39687937f041"
      unitRef="pure">0.0190</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035916Member_C000110081Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_756_32af14a7_0aca_475e_92e6_b57429f4f10e"
      unitRef="pure">-0.0031</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035916Member_C000110081Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_757_f2213af6_ee63_4efb_a535_ef8724cc642b"
      unitRef="pure">-0.0135</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035916Member_C000110081Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_758_81d9f2f5_2f47_4ab8_bafe_869499572c5c"
      unitRef="pure">0.0069</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035916Member_C000110081Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_759_a5641198_9575_4ee6_90be_8233620e5580"
      unitRef="pure">0.0079</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035916Member_C000110081Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_760_10a346a9_ca8a_4d6f_89dd_69ade0bc6623"
      unitRef="pure">-0.0061</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035916Member_C000110081Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_761_c1598545_42ef_493e_be0d_331f772912b4"
      unitRef="pure">0.0093</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035916Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_762_7e3bdff0_d395_4d7a_8c17_ae290e913cef"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035916Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_763_dc4e9dbf_a52c_4c12_8100_2c14eb24fddc"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035916Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_764_356c3d5e_2cc0_4f35_a59d_2b153505aafe"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035916Member_BloombergUSCorporateAaaACappedIndexMember"
      decimals="4"
      id="h_765_bb9145d4_e7ab_4306_9912_8c02cd2ac4bd"
      unitRef="pure">0.0130</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035916Member_BloombergUSCorporateAaaACappedIndexMember"
      decimals="4"
      id="h_766_dbba3c32_0796_4cea_bc0b_71928d927aff"
      unitRef="pure">-0.0007</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035916Member_BloombergUSCorporateAaaACappedIndexMember"
      decimals="4"
      id="h_767_2d86d453_992d_4213_8963_1fd1d9003215"
      unitRef="pure">0.0201</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000035916Member"
      id="t_794_b38a250f_5e2f_7b39_b3f0_dd2cbe3bdab9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000035916Member"
      id="t_795_4d247f9a_6087_0704_1cee_6746efdd8e2b">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000035916Member"
      id="t_796_9002fda9_be53_e6ca_d8cd_38b19730e786">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000035916Member"
      id="t_797_346bff46_9056_6de9_0b8a_364cc99312e3">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000063139Member"
      id="t_786_28a2a9d2_168b_79e2_de57_faf48d9a698b"> iSHARES&#xae; BB RATED CORPORATE  BOND ETF  Ticker: HYBBStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000063139Member"
      id="t_323_2b46f65c_b414_4a11_b6e2_c29e95955f2b">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000063139Member"
      id="t_324_bdb27f41_9901_4b4e_820e_5ca84b64ca12"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares BB Rated Corporate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of BB (or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent) fixed rate U.S. dollar-denominated bonds issued by U.S. and non-U.S. corporate issuers.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000063139Member"
      id="t_325_450713be_aef3_4eaa_b07c_5f16bbabf2bb">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000063139Member"
      id="t_326_72206b31_6806_4068_96a9_75d794798682"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000063139Member"
      id="t_787_92ad5e87_8d9f_72d6_96a1_c365ae3c079f">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_768_96704e5e_46bf_4e5c_9273_aeafd9bcb221"
      unitRef="pure">0.0025</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_769_acef3fad_a4ec_4833_aa4c_cae6ba2192bc"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_770_1583a7b9_2097_413f_bed4_e6d1a28ea62d"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_771_c86d0695_dcf6_4742_a233_c53a818ae2de"
      unitRef="pure">0.0025</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000063139Member"
      id="t_788_d0ca1041_cf4b_4d50_e203_2ba7102d023a">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000063139Member"
      id="t_826_4cab6283_24ff_25cf_ed18_8a1e5bab1c8c">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000063139Member_C000204721Member"
      decimals="INF"
      id="h_772_df9462bf_7e87_48da_8ff9_99d131141664"
      unitRef="USD">26</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000063139Member_C000204721Member"
      decimals="INF"
      id="h_773_d7c0455d_16e2_40b9_b7ad_e23642867dfc"
      unitRef="USD">80</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000063139Member_C000204721Member"
      decimals="INF"
      id="h_774_14a4a4dd_e398_4bf6_86f9_257a9f2a7cbc"
      unitRef="USD">141</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000063139Member_C000204721Member"
      decimals="INF"
      id="h_775_a208e05d_328c_4e4d_a94e_3e09c19a4218"
      unitRef="USD">318</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000063139Member"
      id="t_789_1992c4f5_3c20_6337_f5f0_eb931757837a">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000063139Member"
      id="t_790_272dfbb3_ab67_4bcf_6594_4ab9f5257aac">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 37% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000063139Member"
      decimals="4"
      id="h_776_c6e5ec02_09ec_4e31_9650_eaff542ba7d6"
      unitRef="pure">0.37</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000063139Member"
      id="t_328_aeba2588_1ccf_417f_bb4b_42a1e9b8502e"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000063139Member"
      id="t_329_3614ebbd_3bc2_4794_9e33_6a7ff6c1c468"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE BofA BB &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;US High Yield Constrained Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures the performance of the BB (or its equivalent) fixed-rate, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollar-denominated, corporate bond market. The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is a subset of the ICE BofA US High Yield Index that is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market capitalization-weighted with a 2% cap on any one issuer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and a pro rata distribution of any excess weight across the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining issuers in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes U.S. dollar-denominated securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. and non-U.S. industrials, utility and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate issuers, with maturities of one year or more, that have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;$250 million or more of outstanding face value. Only securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated BB+ through BB-, based on an average of Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and S&amp;amp;P &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Ratings, are eligible for the Underlying Index. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated BB+ and below are generally considered non-investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Excluded from the Underlying Index are certain hybrid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital securities, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, equity-linked securities, securities in legal default, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hybrid securitized corporates, eurodollar bonds, taxable and tax-exempt&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; US municipal securities and $1000 par preferred and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends received deduction-eligible securities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest in non-U.S. issuers to the extent necessary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for it to track the Underlying Index. As of October 31, 2024, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant portion of the Underlying Index is represented by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of companies in the energy industry or sector. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components of the Underlying Index, and the degree to which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;these components represent certain industries, are likely to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest in privately-issued securities, including those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that are normally purchased pursuant to Rule 144A or Regulation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S promulgated under the Securities Act of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000063139Member"
      id="t_828_09ebcc71_4e21_301d_e839_f57cb1e1423b"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000063139Member"
      id="t_330_e9f8c04c_e2fc_4a69_871a_6eeaa87c771e"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000063139Member_RiskLoseMoneyMember"
      id="t_791_11364c64_9710_5e53_8049_b5299a2f12e8">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_HighYieldSecuritiesRiskMember"
      id="t_792_b1b2798b_26bb_38bf_d97d_31ed609fade0"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_CreditRisksMember"
      id="t_794_bbe81b0d_85ac_c42a_076d_5ba47af4b7d7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_InterestRateRisksMember"
      id="t_795_bea4f676_706f_abbe_b2d5_25df278f0b7e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_MarketRiskMember"
      id="t_796_39a7d0b0_9415_f85e_9326_6075e24c9928"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_IndexRelatedRiskMember"
      id="t_802_0bea17ee_94a0_dec2_ddc4_2935576f1e9c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_AssetClassRiskMember"
      id="t_793_37a02fb3_ff0a_577a_ab8c_d127ca6b69eb"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_797_0e40da4a_4b67_50ff_4757_d789a550014b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_CallRiskMember"
      id="t_798_c2d392cc_0c2e_22d2_f183_f9aa3c68747f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_ConcentrationRiskMember"
      id="t_799_de4e75f8_864a_af3c_bde8_79ba3061a224"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_CybersecurityRiskMember"
      id="t_800_a1694976_c7a8_3fea_2c77_c137180acf40"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_EnergyCompaniesRiskMember"
      id="t_801_bf143788_8461_d2ae_b2f9_38718e1fbb5d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Energy Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Companies in the energy sector may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected by volatility in energy and commodity prices, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower demand, overproduction, depletion of resources, social and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;political unrest, war, trade disputes, government regulations and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;energy transition efforts, among other factors.&#160;The energy sector &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is cyclical and can be significantly impacted by changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic conditions. Some energy companies, such as those in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the oil and gas sector, face substantial costs related to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exploration and production and significant operational risks. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Energy companies are at risk of environmental damage claims and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other litigation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_IncomeRiskMember"
      id="t_803_127ba5b7_81bc_a10d_16c8_0432d4e1dd59"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_IssuerRiskMember"
      id="t_804_8305a586_b204_e06b_d66a_534952694ff4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_ManagementRiskMember"
      id="t_805_069b2dd0_e107_43dd_5cc4_2f270880a6a7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_MarketTradingRiskMember"
      id="t_809_12c035da_9c99_4c98_b93c_ee9d448c2636"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_OperationalRiskMember"
      id="t_810_fb51b41a_d4b5_38ca_5967_496f284caad2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063139Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_811_51ad3be6_8761_fa0d_d1a6_c8103d9094fe"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_RelianceOnTradingPartnersRiskMember"
      id="t_812_e622b0a7_0474_c706_0df0_d82d570c6e14"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_RiskOfInvestingInTheUSMember"
      id="t_806_15e37f46_c2ad_cf69_b3db_27540cb08aa6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_SecuritiesLendingRiskMember"
      id="t_807_fff1c789_8b09_ca29_03a0_62cff8f82178"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_TrackingErrorRiskMember"
      id="t_808_978d0b21_7ecd_15a3_69f8_075c93469b85"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063139Member_ValuationRiskMember"
      id="t_813_227f8bb4_67c0_6922_bcec_e6b5407e4312"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000063139Member"
      id="t_331_a97bb026_8316_4803_8761_13667d978485"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000063139Member"
      id="t_814_57c0af7a_cfd8_fbb4_7252_8133708b4e67"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000063139Member"
      id="t_815_c06d726e_7271_1223_f165_523f02294795">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000063139Member"
      id="t_816_9ed6b2ac_7b06_e68c_db50_a760f225e531">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000063139Member"
      id="t_818_9e0dbb9f_3ad3_6fcb_549c_ecf5118e93f4">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000063139Member"
      id="t_817_3b975e83_76a1_454b_2c7e_6c3c206c6550">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000063139Member"
      id="t_819_27e0d39f_5c2e_05ab_6bc6_f31adf3bf64c"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000063139Member"
      id="t_820_4eb967c9_a590_90e7_6004_d888810660ee"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 3.29pt;"&gt;7.40%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-8.64%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000063139Member_C000204721Member"
      id="h_780_96a84561_5d85_4dff_b4b2_3317f7741208">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_781_4a29a02f_7277_4c34_82d8_0a365717ffc8"
      unitRef="pure">0.0740</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000063139Member_C000204721Member"
      id="h_782_1fba5f10_427d_4273_a465_04f8fa74f0bc">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000063139Member_C000204721Member"
      id="h_783_39323a10_68f2_496e_b3f8_3dff312fb4ac">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_784_6156dbee_c4a4_42c1_9a2c_4343929df9d2"
      unitRef="pure">-0.0864</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000063139Member_C000204721Member"
      id="h_785_b2b0f4fa_02b7_48e0_9fbf_8f6c969e5ba5">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000063139Member"
      id="t_333_160f1cc7_9ebf_4fa5_bdda_d8848c8c84cc">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000063139Member_C000204721Member"
      id="t_821_3a67f092_0931_4171_97e0_346a5f537e1f">2020-10-06</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_786_ff3ac0ee_a528_4b3a_a13d_286c23419761"
      unitRef="pure">0.0622</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063139Member_C000204721Member"
      decimals="4"
      id="h_787_c907742f_9acb_43e2_bbd4_ecb375253c75"
      unitRef="pure">0.0337</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063139Member_C000204721Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_788_ec40125f_242a_4cc1_b5f9_89c0846600f6"
      unitRef="pure">0.0357</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063139Member_C000204721Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_789_c194a7bb_be97_4e4b_a049_6bfab137181b"
      unitRef="pure">0.0116</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063139Member_C000204721Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_790_8a714a1d_2049_4626_a792_3164f3e278c5"
      unitRef="pure">0.0364</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063139Member_C000204721Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_791_ef916fbc_67a2_48d5_bc02_7f0db95c19c1"
      unitRef="pure">0.0161</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063139Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_792_aaf28199_4b16_4aa6_a917_fefb6ef879ad"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063139Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_793_b76f8003_78ca_412a_826b_4d6c2528a0f9"
      unitRef="pure">-0.0192</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063139Member_ICEBofABBUSHighYieldConstrainedIndexMember"
      decimals="4"
      id="h_794_7f3cefe1_7fd8_4ac7_9fb1_61ffc797643c"
      unitRef="pure">0.0633</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063139Member_ICEBofABBUSHighYieldConstrainedIndexMember"
      decimals="4"
      id="h_795_2c20a077_3c3e_4744_a7ec_912549accbe1"
      unitRef="pure">0.0349</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000063139Member"
      id="t_829_307a2c11_00fc_babc_8364_99745c20b8c1">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE BofA BB US High Yield Constrained Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE BofA BB US High Yield Constrained Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE BofA BB US High Yield Constrained Index, which now utilizes pricing as of 4pm, and resulted in a discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000063139Member"
      id="t_825_79614bfc_7a19_ae5f_47a1_23bf19ec9e0b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000063139Member"
      id="t_822_9ccf195e_97a3_72bb_1150_c5a163910e11">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000063139Member"
      id="t_823_4e279b06_0e94_e497_f2a4_f17a049eebb0">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000063139Member"
      id="t_824_d21d641a_f7b7_236d_0aba_32a453927cd8">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000059297Member"
      id="t_814_2264fc7b_aaf9_cc15_5872_87f5b693473a"> iSHARES&#xae;&#160;BROAD USD HIGH YIELD CORPORATE BOND ETF  Ticker: USHYStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000059297Member"
      id="t_334_c2c97d05_b1a5_4085_a1f7_558346ee4875">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000059297Member"
      id="t_335_3795b07c_c7db_4d25_86a7_ed68b49f3ca7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Broad USD High Yield Corporate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, high yield corporate bonds.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000059297Member"
      id="t_336_21c29cb1_e5e4_4b65_a758_1fe7971bae73">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000059297Member"
      id="t_337_e79e3437_008a_4848_bbda_698449f3cd40"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000059297Member"
      id="t_859_81e5a210_fae9_5bb9_01dd_f2d68089adc6">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1,2</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_796_08d4feca_7d40_4ef1_9139_fcc824d98f6a"
      unitRef="pure">0.0008</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_797_36cfade4_0ab9_42ad_add5_e8ed39ec79d3"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_798_82ac3cf0_00e5_4a0f_bca2_011a1c592d8c"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_799_e2f3fc8f_694e_4ba5_a926_ba0fb54e438a"
      unitRef="pure">0.0008</rr:ExpensesOverAssets>
    <rr:ExpensesRestatedToReflectCurrent
      contextRef="S000059297Member"
      id="t_816_1b73b7c6_54e8_5502_66b7_a70af542f9a2">The expense information in the table has been restated to reflect current fees.</rr:ExpensesRestatedToReflectCurrent>
    <rr:ExpenseExampleHeading
      contextRef="S000059297Member"
      id="t_815_96fe22c3_5b89_4136_e752_6b2bdfec6a15">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000059297Member"
      id="t_855_ceedef96_23f6_878b_655c_03d2f90cbdf6">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000059297Member_C000194633Member"
      decimals="INF"
      id="h_800_d8cf917f_8040_4268_9a5d_0f14bcecd2c9"
      unitRef="USD">8</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000059297Member_C000194633Member"
      decimals="INF"
      id="h_801_62f25e48_7374_4f72_a366_17d4a742f33a"
      unitRef="USD">26</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000059297Member_C000194633Member"
      decimals="INF"
      id="h_802_91f1c74b_5536_4fdf_8f6a_4152509b1b5f"
      unitRef="USD">45</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000059297Member_C000194633Member"
      decimals="INF"
      id="h_803_78530509_1712_4c0a_8310_4d7203ddc833"
      unitRef="USD">103</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000059297Member"
      id="t_817_a4962e70_4bb0_887d_52a1_a4467fbf4118">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000059297Member"
      id="t_818_fc1cf890_4323_0bfa_bca3_3701063bfdbd">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 21% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000059297Member"
      decimals="4"
      id="h_804_429fc2f0_dd30_4ef5_9f2c_d84f0e24df3d"
      unitRef="pure">0.21</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000059297Member"
      id="t_339_528a6363_c400_499e_840b_0e01033e02c1"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000059297Member"
      id="t_340_4858a5fd_467e_4710_b3cc_05e61c0f3028"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE BofA US &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;High Yield Constrained Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rules-based index consisting of U.S. dollar-denominated, high &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yield (as determined by ICE Data Indices, LLC (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate bonds publicly issued and settled in the U.S. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is designed to provide a broad representation of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. dollar-denominated high yield corporate bond market. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is a modified market value-weighted index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with a cap on each issuer of 2%. There is no limit to the number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues in the Underlying Index, but as of October 31, 2024, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index included approximately 1,875 constituents and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the issuers in the Underlying Index are principally located in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. The components of the Underlying Index are likely to change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), the bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible for inclusion in the Underlying Index include U.S. dollar-denominated&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; high yield corporate bonds that: (i) are issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies having &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk exposure&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to countries (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to the risks of one or more of these countries as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of the principal country of domicile of the issuers (as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determined by the Index Provider)) that are members of the FX-G10,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which include Australia, Austria, Belgium, Canada, Cyprus, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Estonia, Finland, France, Germany, Greece, Ireland, Italy, Japan, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Latvia, Lithuania, Luxembourg, Malta, the Netherlands, New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Zealand, Norway, Portugal, Slovakia, Slovenia, Spain, Sweden, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Switzerland, the U.K. and the U.S. and their respective territories; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(ii) have an average rating of below investment grade (ratings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Moody&#x2019;s Investors Service, Inc. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or S&amp;amp;P Global Ratings are considered; if more than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;one agency provides a rating, the average rating is attached to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond); (iii) are registered with the SEC, exempt from registration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at issuance, or offered pursuant to Rule 144A under the Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Act of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), with or without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registration rights; (iv) have at least $250 million of outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face value; (v) have an original maturity date of at least 18 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;months; and (vi) have at least one year to maturity.&#160;Excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are certain hybrid capital securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities issued or marketed primarily to retail investors, equity-linked&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities, securities in legal default, hybrid securitized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporates, eurodollar bonds, taxable and tax-exempt US &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal securities and $1000 par preferred and dividends &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;received deduction-eligible securities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Index Provider, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider determines the composition and relative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weightings of the securities in the Underlying Index and publishes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000059297Member"
      id="t_857_5eb1da6f_350d_700a_9658_951e18d2e749">  Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.  </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000059297Member"
      id="t_341_ccdd7933_6231_4d7f_abef_c4acd75e374c"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000059297Member_RiskLoseMoneyMember"
      id="t_819_f983d8e6_d133_1603_d3ba_a60282bc2421">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_HighYieldSecuritiesRiskMember"
      id="t_820_b9208112_a9de_3739_a000_7b77947bba99"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody&#x2019;s), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_InterestRateRisksMember"
      id="t_826_0410b927_255a_38eb_0885_64d7cf11c793"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_CreditRisksMember"
      id="t_827_53cc8e22_4068_a726_67a9_9bdbb021b0dc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_MarketRiskMember"
      id="t_828_f8208101_e829_36ab_f99f_3f0cb2b274da"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_IndexRelatedRiskMember"
      id="t_829_a00ebeff_0aac_0429_7797_b4ae78145e65"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_AssetClassRiskMember"
      id="t_821_341342c2_22cd_4527_cf30_8b08a325294b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_822_d7ec48ac_295d_f947_6c19_2c0238deb158"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_CallRiskMember"
      id="t_823_f7085d8a_da16_ff13_b4eb_a3f41416c301"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_CommodityRiskMember"
      id="t_824_fff23ee6_cf59_c986_a109_4b9627edff83"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commodity Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in companies that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;susceptible to fluctuations in certain commodity markets and to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price changes due to trade relations. Any negative changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity markets that may be due to changes in supply and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand for commodities, market events, war, regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, other catastrophic events, or other factors that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund cannot control could have an adverse impact on those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_ConcentrationRiskMember"
      id="t_825_9de4da14_e026_dbaa_7779_5e72c006879f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_CybersecurityRiskMember"
      id="t_830_5fdd14a5_cc9b_1ae3_35ec_12cde8fefdad"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000059297Member_EnergyCompaniesRiskMember"
      id="t_831_f13fa4ae_3498_7aaf_6168_55b3c97d1d0b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Energy Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Companies in the energy sector may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affected by volatility in energy and commodity prices, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower demand, overproduction, depletion of resources, social and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;political unrest, war, trade disputes, government regulations and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;energy transition efforts, among other factors.&#160;The energy sector &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is cyclical and can be significantly impacted by changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic conditions. Some energy companies, such as those in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the oil and gas sector, face substantial costs related to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exploration and production and significant operational risks. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Energy companies are at risk of environmental damage claims and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other litigation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_IlliquidInvestmentsRiskMember"
      id="t_832_8af9b4d0_b35d_ba8d_baf4_1909a21fc6d2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_IncomeRiskMember"
      id="t_833_ab71e186_c7f7_3327_fb2c_96ef0d2d5477"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_IssuerRiskMember"
      id="t_834_7720134f_9b4a_7031_6ed7_a4124df1bb3c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_ManagementRiskMember"
      id="t_835_ca0d2536_b1ee_cda2_98d6_10792d8c5c32"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_MarketTradingRiskMember"
      id="t_836_13d23f82_eba5_8214_e946_9ab1b367fed3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_OperationalRiskMember"
      id="t_838_66b98f22_d695_d338_bbfe_2918f9070e09"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_837_b0949b0a_3c81_4ad5_0db9_af9f37bc93d5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_RiskOfInvestingInTheUSMember"
      id="t_839_a3cb5cf5_796a_0b73_f1e3_b488949df19e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_SecuritiesLendingRiskMember"
      id="t_840_2470300e_78cc_7b37_6962_1da37db83bf1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_TrackingErrorRiskMember"
      id="t_841_4795243a_cd2c_9c06_3e64_80452c493735"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000059297Member_ValuationRiskMember"
      id="t_842_e40c24e5_d2bb_bd11_9b27_a31f8851c1bc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000059297Member"
      id="t_342_e20ffbc0_5059_4702_bc0b_b6fc02bb0468"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000059297Member"
      id="t_843_46c1a9f4_1be3_9bee_abc4_5daf3ba9f73e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000059297Member"
      id="t_858_67b3f9fc_c218_0c0e_a80d_40ff5a4d5ed3">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000059297Member"
      id="t_848_18e32ea8_b824_68f4_f5f3_f1205cf56ff9">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000059297Member"
      id="t_849_e39ed94a_8ec3_a714_4f02_96c6ba212fa4">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000059297Member"
      id="t_850_a4f5f569_439c_0b7a_ac01_5695d1d724cf">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000059297Member"
      id="t_844_d5c5659f_d72b_7400_c5fd_3fdd25da06b9"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000059297Member"
      id="t_845_2af201d6_a30a_076c_06cb_ec2411096966"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.54pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.54pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 5.97pt;"&gt;9.56%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.54pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.54pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-13.02%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000059297Member_C000194633Member"
      id="h_808_67c79c34_dba0_45d6_9495_a1df24e76908">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_809_afd7de11_e653_4d14_be5a_b67c14cdccec"
      unitRef="pure">0.0956</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000059297Member_C000194633Member"
      id="h_810_d1ed3d3d_79b0_4472_b6d7_5afa5eaed9e5">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000059297Member_C000194633Member"
      id="h_811_47da3e6e_25f3_4da7_b0bb_e7c51034eebe">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_812_2fccdc40_757a_4eca_91a0_580566d4cdaa"
      unitRef="pure">-0.1302</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000059297Member_C000194633Member"
      id="h_813_dd988eca_0b69_4156_96d9_6c7bcf9a302a">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000059297Member"
      id="t_344_ebcec506_09c8_49dc_babd_df62cc594f55">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000059297Member_C000194633Member"
      id="t_846_0add3bde_cc1c_5304_f94c_3f27962da32b">2017-10-25</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_814_16aa2433_56a8_4a82_87a0_72d2cdd15ada"
      unitRef="pure">0.0830</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_815_25814233_0e27_4801_b9a4_1993d24f5ede"
      unitRef="pure">0.0397</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000059297Member_C000194633Member"
      decimals="4"
      id="h_816_88d137c5_bfd7_42c2_b13f_777585c6674b"
      unitRef="pure">0.0434</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000059297Member_C000194633Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_817_5e689fc3_e856_4ddc_bd2b_8fa6404acad9"
      unitRef="pure">0.0529</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000059297Member_C000194633Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_818_cf9fc08f_a4a0_4020_98bd_b262989eae4b"
      unitRef="pure">0.0144</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000059297Member_C000194633Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_819_320807d7_c22a_4a0c_975a_b32d466f114b"
      unitRef="pure">0.0182</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000059297Member_C000194633Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_820_db3dd486_8389_4b9a_a666_d3868e02220a"
      unitRef="pure">0.0485</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000059297Member_C000194633Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_821_ad595e62_9ce2_45fa_9e1e_fad5644763ab"
      unitRef="pure">0.0190</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000059297Member_C000194633Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_822_9e8c14dc_93df_4ead_9e6f_20f9260804ee"
      unitRef="pure">0.0219</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000059297Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_823_7079eb72_fe58_4b76_8dae_b699193b4a47"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000059297Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_824_d989118b_d602_408c_a1c0_76d4302777ac"
      unitRef="pure">-0.0034</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000059297Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_825_168e43e4_5b3d_4be7_83a2_23e58828e0c9"
      unitRef="pure">0.0106</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000059297Member_HighOneIndexMember"
      decimals="4"
      id="h_826_2a979d47_be8b_4692_b52c_d4ff932a74d4"
      unitRef="pure">0.0822</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000059297Member_HighOneIndexMember"
      decimals="4"
      id="h_827_2018adff_0b54_47d0_b6a1_8e9fbb640c41"
      unitRef="pure">0.0403</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000059297Member_HighOneIndexMember"
      decimals="4"
      id="h_828_ce2ff6a3_a7b7_4d03_9940_c2736f097e47"
      unitRef="pure">0.0441</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000059297Member"
      id="t_856_485123c0_a936_154b_d0b7_b677708e389d">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE BofA US High Yield Constrained Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE BofA US High Yield Constrained Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE BofA US High Yield Constrained Index, which now utilizes pricing as of 4pm, and resulted in a discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000059297Member"
      id="t_854_5106c920_474f_1265_0ca7_9aa98f98e409"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000059297Member"
      id="t_851_cff6f971_e9fd_4395_82ff_948d8d4d1c02">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000059297Member"
      id="t_852_e3881eb5_c443_26f9_7726_eb1324803615">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000059297Member"
      id="t_853_d2d922b1_1940_df2f_8c38_d98facea829a">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000035914Member"
      id="t_847_49973e59_04b7_cf76_f06c_82cf38e7d1c4"> iSHARES&#xae; CMBS ETF  Ticker: CMBSStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000035914Member"
      id="t_345_056ff7a0_ac9c_49cb_af88_d022be9ceec5">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000035914Member"
      id="t_346_94bd61f3_53ed_4682_a4f0_9af5058f46eb"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares CMBS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of investment-grade commercial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mortgage-backed securities.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000035914Member"
      id="t_347_c615b7a4_eba5_4e27_a340_33206a1c73dc">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000035914Member"
      id="t_348_1c4395fe_f390_4f33_b416_8a0456eb2723"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000035914Member"
      id="t_848_2f2462c6_4d2c_4f9f_7215_68fb2ac9048e">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_829_7b6db185_244d_4e5a_a464_4f3f2e0da95f"
      unitRef="pure">0.0025</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_830_19d44a1a_68da_4cae_ac65_eba0c9172798"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_831_9ca2d396_1065_4cd3_9ddc_c5cff8a1e20c"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_832_c9dda485_06c1_4214_9a8d_658ed3cbc84a"
      unitRef="pure">0.0025</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000035914Member"
      id="t_849_d28d77b6_0c7c_03c8_0d5a_09293d938c58">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000035914Member"
      id="t_888_7bf6e3dc_6de7_f5c8_5ba7_ba318b52f9f9"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000035914Member_C000110079Member"
      decimals="INF"
      id="h_833_9d330659_065d_47d2_b6f1_9e922eee2e96"
      unitRef="USD">26</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000035914Member_C000110079Member"
      decimals="INF"
      id="h_834_d6ddb934_c359_486b_bfff_50efd339997a"
      unitRef="USD">80</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000035914Member_C000110079Member"
      decimals="INF"
      id="h_835_a2a62e1e_7b07_4df0_902e_acd6b453c4b0"
      unitRef="USD">141</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000035914Member_C000110079Member"
      decimals="INF"
      id="h_836_864fcc8e_6735_4e21_ba21_4a0e9a89eb3f"
      unitRef="USD">318</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000035914Member"
      id="t_850_a3b13bf6_3108_7394_82a3_8181b92e7e11">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000035914Member"
      id="t_851_b27b65fc_5202_73ae_3ea0_69f3d2d6f963">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 33% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000035914Member"
      decimals="4"
      id="h_837_2c24dc81_dba0_407a_8454_d24293469539"
      unitRef="pure">0.33</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000035914Member"
      id="t_350_e12b89c4_1aca_4e1e_95c1_5055a958d467"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000035914Member"
      id="t_351_34fc0dc4_1199_47d5_abe5_0c346517ac15"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. CMBS (ERISA Only) Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures the performance of investment-grade (as determined &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) commercial mortgage-backed securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMBS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which are classes of securities (known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certificates&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represent interests in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pools&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; of commercial mortgages. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index includes only CMBS that are Employee &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Retirement Income Security Act of 1974, as amended (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ERISA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible under the underwriter&#x2019;s exemption, which will deem ERISA &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible the certificates with the first priority of principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repayment, as long as certain conditions are met, including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirement that the certificates be rated in one of the three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;highest rating categories by Fitch Ratings, Inc., Moody's Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc. or S&amp;amp;P Global Ratings.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes investment-grade CMBS that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ERISA eligible with $300 million or more of aggregate outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transaction size. In addition, the original aggregate transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;must be $500 million or more and the tranche size must be $25 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;million or more. CMBS certificates must have an expected life of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at least one year and must be either fixed-rate or subject to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rate cap equal to the weighted average coupon of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying asset pool. Excluded from the Underlying Index are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-ERISA eligible securities, agency transactions and privately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued securities, including those which may be resold in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;accordance with Rule 144A under the Securities Act of 1933, as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The securities in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are updated on the last calendar day of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000035914Member"
      id="t_852_0b7ae791_0389_2037_6c68_adbdfd8c82af"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000035914Member"
      id="t_352_62149b9b_fc47_41f0_826a_62e3d5542f0a"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000035914Member_RiskLoseMoneyMember"
      id="t_853_523b857b_8a03_7390_1a9b_271acd62ba2a">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_CommercialMortgageBackedSecuritiesRiskMember"
      id="t_854_aa35da35_d5ee_7cac_19a0_a2b686081c7f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commercial Mortgage-Backed Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMBS are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;backed by the full faith and credit of the U.S. government and are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to risk of default on the underlying mortgages, particularly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;during periods of economic downturn. CMBS issued by non-government&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; entities may offer higher yields than those issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government entities, but also may be subject to greater volatility &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than government issues. CMBS are subject to a greater degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prepayment and extension risk than many other forms of fixed-income&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities and therefore react differently to changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates than other bonds, and the prices of CMBS may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect adverse economic and market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_CreditRisksMember"
      id="t_855_3699ddbb_3bd3_77ba_6c83_177b7a8a9335"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_InterestRateRisksMember"
      id="t_856_9d3d8bf7_7c57_50e3_d039_eba406812c2f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_MarketRiskMember"
      id="t_857_ca2b855a_fc6e_325f_cb61_d94c5233a67d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_IndexRelatedRiskMember"
      id="t_861_6421aa97_5439_359f_7287_1f0042a078e1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_AssetClassRiskMember"
      id="t_862_01e5dacd_b766_5b71_5d43_da06a6ebea71"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_863_865c0751_cd9f_b8ec_f8cf_9a1468c1e45a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035914Member_CallRiskMember"
      id="t_858_127a72ef_b2d7_d93c_91f8_50bfbfe7fab6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035914Member_ConcentrationRiskMember"
      id="t_859_97e9322c_f607_1599_afa2_aa0ddfbda6e3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_CybersecurityRiskMember"
      id="t_860_637eb1b9_6355_be6b_07e4_4699a6de91fd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035914Member_ExtensionRiskMember"
      id="t_864_3d279bbc_02f7_073a_f998_7c9cde8b3dbd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s income and potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the value of the Fund&#x2019;s investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_IlliquidInvestmentsRiskMember"
      id="t_865_106b20d1_0070_1363_000f_8c5f8dfa3c7b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_IncomeRiskMember"
      id="t_866_bdf898ec_c192_7347_2f3d_c9b269da9c59"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_IssuerRiskMember"
      id="t_867_b125ca0d_eb2c_a9d8_c940_6a106bb8d809"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_ManagementRiskMember"
      id="t_868_db3e4213_ebff_4d70_9435_0770ba7dc6e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_MarketTradingRiskMember"
      id="t_869_61e02e96_6a97_8a94_f9f4_257e8e99f4cc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035914Member_OperationalRiskMember"
      id="t_870_903383ea_e5c7_ee8b_ee23_9dfb5906da3c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_PrepaymentRisksMember"
      id="t_873_4717d68b_57cb_4ef2_0541_14678e73f476"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Prepayment Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During periods of falling interest rates, issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of certain debt obligations may repay principal prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security&#x2019;s maturity, which may cause the Fund to have to reinvest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in securities with lower yields or higher risk of default, resulting in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a decline in the Fund&#x2019;s income or return potential.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_RiskOfInvestingInTheUSMember"
      id="t_874_5bfa8ec5_dea4_7033_87c3_0d73e05fb803"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_TrackingErrorRiskMember"
      id="t_875_aa703687_45b0_e6e7_b601_43c27db761d9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_USAgencyMortgageBackedSecuritiesRiskMember"
      id="t_871_d5f9a488_7385_b923_5340_9ffae37fc729"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Agency Mortgage-Backed Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in &#160;MBS issued or guaranteed by the U.S. government or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;one of its agencies or sponsored entities, some of which may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be backed by the full faith and credit of the U.S. government. MBS &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represent interests in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pools&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; of mortgages and are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rate, prepayment, and extension risk. MBS react &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differently to changes in interest rates than other bonds, and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prices of MBS may reflect adverse economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions. Small movements in interest rates (both increases and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decreases) may quickly and significantly reduce the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain MBS. MBS are also subject to the risk of default on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying mortgage loans, particularly during periods of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic downturn. Default or bankruptcy of a counterparty to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBA transaction would expose the Fund to possible losses.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035914Member_ValuationRiskMember"
      id="t_872_cca47604_0c46_b103_ffd7_706488a5d907"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000035914Member"
      id="t_353_93a5c24e_84ed_4215_a1d2_c1d7c7d49f4d"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000035914Member"
      id="t_876_c79f4920_68c6_ca24_163a_1ada8fdd33dd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000035914Member"
      id="t_880_0b5b498f_b7ab_a7f9_5ad0_e261249fe32c">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000035914Member"
      id="t_881_43a4997b_96c2_b29a_cca4_236a516bcc8f"> Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000035914Member"
      id="t_883_09f574bb_0cb8_4708_65c8_ace5204d91b3">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000035914Member"
      id="t_882_17c3b2ff_e795_8b50_07fd_46f09a2752c8">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000035914Member"
      id="t_877_6f9e137e_198d_ff38_73ef_12dd896f50a8"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000035914Member"
      id="t_878_edaf3e8d_181f_2588_a5fd_6494b3b1b49d"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.43pt;"&gt;4.99%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.58%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000035914Member_C000110079Member"
      id="h_841_598e032f_0a7e_47a5_8af6_5b6b7d7cc0a8">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_842_abf9e22c_a010_4bba_888c_6b4ca03930bb"
      unitRef="pure">0.0499</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000035914Member_C000110079Member"
      id="h_843_065037d7_c73f_48fb_9444_0d1fad8b63b9">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000035914Member_C000110079Member"
      id="h_844_26087c8b_d755_4620_8a26_84694884ee00">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_845_0e9fb7b4_2b6b_462b_a9d9_0f8c99fbe033"
      unitRef="pure">-0.0558</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000035914Member_C000110079Member"
      id="h_846_81674efb_bfea_4ae8_ae85_0afbf776db88">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000035914Member"
      id="t_355_9158de93_0928_4e2a_a158_ec474ecd77e0">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000035914Member_C000110079Member"
      id="t_887_8359e1a6_67af_371f_7614_8b75b991a4c1">2012-02-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_847_b3134353_efaa_4777_a71b_8a29dd2b5e8d"
      unitRef="pure">0.0452</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_848_4526f452_1bb9_4d9e_be1a_037f8de9ab64"
      unitRef="pure">0.0065</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035914Member_C000110079Member"
      decimals="4"
      id="h_849_f4e33fb5_cd22_4821_894d_e515eb9018eb"
      unitRef="pure">0.0184</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035914Member_C000110079Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_850_bdd0a81a_90c0_42fc_9653_e71f1722cd48"
      unitRef="pure">0.0312</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035914Member_C000110079Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_851_3a759343_0b9b_4675_b280_2ea2d4f0db7b"
      unitRef="pure">-0.0048</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035914Member_C000110079Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_852_a8445402_4be4_4e78_9487_8a5c8f542aae"
      unitRef="pure">0.0073</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035914Member_C000110079Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_853_e0dfc54b_72f0_4596_b44e_3cfc8a53f7c9"
      unitRef="pure">0.0266</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035914Member_C000110079Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_854_7b1cc0f6_9e6f_4011_a7b3_aacaf4e41faa"
      unitRef="pure">0.0003</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035914Member_C000110079Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_855_ca4d616a_732d_4b4b_8c5a_0dc71beac9df"
      unitRef="pure">0.0093</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035914Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_856_d2e51b77_67f2_4288_b9f8_957bff03ef72"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035914Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_857_828b02ba_e3ea_43ba_8a71_bfd00911d73d"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035914Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_858_7d2a0817_e664_4e65_8073_d3308b735ba1"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035914Member_BloombergUSCMBSERISAOnlyIndexMember"
      decimals="4"
      id="h_859_792d9880_d1f0_4aa1_b753_9f1f95a0e1c3"
      unitRef="pure">0.0468</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035914Member_BloombergUSCMBSERISAOnlyIndexMember"
      decimals="4"
      id="h_860_a148bd91_fb3a_47ab_a825_b70d05cd5f73"
      unitRef="pure">0.0099</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035914Member_BloombergUSCMBSERISAOnlyIndexMember"
      decimals="4"
      id="h_861_1d81e559_b257_4da2_ae25_a3994baae601"
      unitRef="pure">0.0214</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000035914Member"
      id="t_889_406b1296_7f43_e3d5_82c4_9bb2f23ca02a">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000035914Member"
      id="t_890_940b2a5d_d255_dc02_5c27_4112926ecefc">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000035914Member"
      id="t_891_5d7d826e_a89b_f63b_21c8_d76b9e7e557f">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000035914Member"
      id="t_892_ad82fc27_484b_33a7_5cd2_ecf7b8fff406">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000048637Member"
      id="t_880_f50ea093_224b_fada_b05e_e9a1d8b43f7f"> iSHARES&#xae; CONVERTIBLE BOND ETF  Ticker: ICVTStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000048637Member"
      id="t_356_2ca1c54b_2ee0_4521_b31a_f27afab6e3f6">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000048637Member"
      id="t_357_6c709c12_e1be_49b6_bcfb_d9064e43db22"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Convertible Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;convertible securities, specifically cash pay bonds, with outstanding issue sizes greater than $250 million.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000048637Member"
      id="t_358_4b33743f_d9a0_4979_b31f_5fe6e65c837d">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000048637Member"
      id="t_359_641e513b_51f1_4fb7_88fe_475c80ee8ea1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000048637Member"
      id="t_881_9b550d26_6e86_753a_32b8_8ab54fd81f34">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_862_2c921c92_4b02_4dcd_a3fe_596c889a4be4"
      unitRef="pure">0.0020</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_863_50031c2f_c2d4_4d00_b845_10eb4a1978d9"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_864_71314bc5_2161_4f55_afc7_7762a90d564f"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_865_6c4e643b_9268_4ec7_b4a0_c11b0fcd6d01"
      unitRef="pure">0.0020</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000048637Member"
      id="t_884_1d5e0548_b86a_17cb_09be_bf30d7101d5d">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000048637Member"
      id="t_928_abaaa43e_1453_d945_b93c_75186fdb66f0">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000048637Member_C000153287Member"
      decimals="INF"
      id="h_866_2a9fc7ec_fc78_425c_ba88_5590a2b1181a"
      unitRef="USD">20</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000048637Member_C000153287Member"
      decimals="INF"
      id="h_867_07789291_9ea0_4d3d_9210_8c6cdf2e3536"
      unitRef="USD">64</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000048637Member_C000153287Member"
      decimals="INF"
      id="h_868_123757e9_a29c_4cff_bab4_0baf3e99b18f"
      unitRef="USD">113</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000048637Member_C000153287Member"
      decimals="INF"
      id="h_869_72f92e42_c844_406a_bd99_ff4e08b7f1f2"
      unitRef="USD">255</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000048637Member"
      id="t_882_c1f42cbc_5f12_f626_ceac_10106b9e28ca">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000048637Member"
      id="t_883_92bcedc8_9686_4a77_242b_11e94839fd37">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 25% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000048637Member"
      decimals="4"
      id="h_870_ccf5f955_f19f_4284_8303_1f4314d1fb68"
      unitRef="pure">0.25</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000048637Member"
      id="t_361_a69a78a9_743a_4cf4_93e9_77d3b3214dc7"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000048637Member"
      id="t_362_f0141c76_856b_4efe_a8a1_0831ccde9d28"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Convertible Cash Pay Bond &#x2c3; $250MM Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying Index is a subset of the Bloomberg U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Convertibles: Cash Pay Bonds Index, which is one of the four &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classes of the Bloomberg U.S. Convertibles Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, cash pay, zero coupon, preferred and mandatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;convertible bonds) and measures the performance of the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated convertibles market. The Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market capitalization-weighted and consists of only cash pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;convertible bonds. Cash pay convertible bonds allow the holder of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the bond the option to convert into a pre-specified number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of the issuer&#x2019;s common stock, but do not require &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conversion.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The universe of securities that are eligible for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index includes U.S. dollar-denominated securities with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturities of 31 days or more and $250 million or more of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding face value issued by financials, industrials and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;utilities corporations. The securities may be investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield (as determined by Bloomberg Index Services Limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, non-investment-grade &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or non-rated. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is rebalanced on the last business day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities eligible for inclusion in the Underlying Index must be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;convertible tranches registered with the SEC or issued under Rule &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;144A of the Securities Act of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest in only U.S. dollar-denominated securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to track the Underlying Index. As of October 31, 2024, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant portion of the Underlying Index is represented &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by&#160;&#160;securities of companies in the consumer goods and services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and technology industries or sectors. The components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are likely to change over time. The methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to construct the Underlying Index does not provide for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conversion of the bonds constituting the Underlying Index into the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated common stock regardless of the current price of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;common stock.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000048637Member"
      id="t_886_996b5f8b_b5af_9839_04b3_defc8ac4771d"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000048637Member"
      id="t_363_8f2e1c28_729a_480a_a78f_b0df494b0ef4"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000048637Member_RiskLoseMoneyMember"
      id="t_887_591b5955_c5dd_0f9d_aeea_2c7667086a72">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_ConvertibleSecuritiesRiskMember"
      id="t_898_911a22e4_9f65_436d_cac4_b95953f02a7b"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Convertible Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The market price of a convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security generally tends to behave like that of a regular debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security; that is, if market interest rates rise, the value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;convertible security usually falls. In addition, convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities are subject to the risk that the issuer will not be able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pay interest, principal or dividends when due, and their market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value may change based on changes in the issuer&#x2019;s credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or the market&#x2019;s perception of the issuer&#x2019;s creditworthiness. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Because a convertible security derives a portion of its value from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the common stock into which it may be converted, a convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security is also subject to the same types of market and issuer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks that apply to the underlying common stock, including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;potential for increased volatility in the price of the convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security. The methodology used to construct the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not provide for the conversion of the convertible bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;constituting the Underlying Index, even if the common stock into &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the bonds may be converted is trading at a price above the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conversion price or conversion premium.&#160;&#160;As a result, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;generally will not exercise the conversion feature associated with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the convertible securities, even if it is economically beneficial to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;do so.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_CreditRisksMember"
      id="t_899_1d56c73c_307f_94d5_963e_029d4dfd4c20"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_InterestRateRisksMember"
      id="t_900_fbae529f_42f1_9935_6907_5dfed20f8d1d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_MarketRiskMember"
      id="t_901_27a6f24e_7316_9340_4da7_ec390a322742"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_IndexRelatedRiskMember"
      id="t_902_f85e5022_9b92_4ea7_694a_c5c4c405fc4d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000048637Member_AssetClassRiskMember"
      id="t_903_b5eae243_7f19_b423_03bb_651edd9ce902"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_904_aaa341bc_75ef_fff3_39be_da2a59854778"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_CallRiskMember"
      id="t_905_adde0d26_92ca_c395_cc0f_49309e3f490f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_ConcentrationRiskMember"
      id="t_906_fd63e29d_2513_ad1a_e341_12ef146084a9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_907_42f17736_e809_dc67_4680_15683b61e018"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_CybersecurityRiskMember"
      id="t_908_74f85e24_8970_7051_88af_8a729edba183"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_HighYieldSecuritiesRiskMember"
      id="t_909_948337d5_8e36_2fdd_b0a6_be54056ae273"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_IlliquidInvestmentsRiskMember"
      id="t_910_c5af366a_9045_10d3_4fd1_96527c4637eb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_IncomeRiskMember"
      id="t_911_9b0c4717_cb1e_8c16_ade1_0049d74af9de"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_IssuerRiskMember"
      id="t_912_8efd4b84_81c7_2a9e_79a0_8a81e7ac1731"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_ManagementRiskMember"
      id="t_913_80c6da15_ce19_320e_5f58_e8ec625e3a74"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_MarketTradingRiskMember"
      id="t_914_1a53aaad_062c_25cc_abf1_4711c219f604"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_OperationalRiskMember"
      id="t_915_9bf8a998_6e43_bbd8_2fd9_06d20fdbe2ba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_916_b1fc12ea_db0f_f227_a5df_648b96e05639"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_RiskOfInvestingInTheUSMember"
      id="t_917_be651bb4_1753_bb78_411d_f4b984de793c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_SecuritiesLendingRiskMember"
      id="t_918_b1e4ba1b_c065_1c7b_1281_0c8bf89b1b7f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_TechnologyCompaniesRiskMember"
      id="t_919_8d5d371b_fcee_7aeb_e726_9275bb7b00c1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Technology Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Technology companies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies that rely heavily on technological advances may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited product lines, markets, financial resources, supply chains &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and personnel. These companies typically face intense &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;competition, potentially rapid product obsolescence and changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in product cycles and customer preferences. They may face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unexpected risks and costs associated with technological &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, such as artificial intelligence and machine learning. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Technology companies also depend heavily on intellectual &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property rights and may be adversely affected by the loss or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impairment of those rights. Technology companies may face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased government scrutiny and may be subject to adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government or legal action.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_TrackingErrorRiskMember"
      id="t_920_421b4a89_daac_bee8_926a_2aec00bb51ef"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000048637Member_ValuationRiskMember"
      id="t_921_199ece73_6df9_4b03_0e88_72089d89cd5f"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000048637Member"
      id="t_364_354b3107_f01b_4744_bc6d_a848523f950a"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000048637Member"
      id="t_888_bdff327a_b662_7985_8852_710e8fd1ac06"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000048637Member"
      id="t_926_ee681851_660b_bb5d_43b6_a0113e27f9c7">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
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      contextRef="S000048637Member"
      id="t_891_3df8539a_0e60_1b4a_daa9_dadc2f2e185d">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000048637Member"
      id="t_890_5c11c48f_9369_b015_e4cc_7d330c053255">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000048637Member"
      id="t_889_692981ae_9a42_df78_e79f_ed96216419b3">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000048637Member"
      id="t_892_1e8c727a_5740_0db1_a945_5c6ec48ff461"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000048637Member"
      id="t_897_25d60f3d_bd2d_e7b2_6819_82011918d781"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 155.18pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 52.18pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 155.18pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.49pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.49pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.33pt;"&gt;28.90%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 52.18pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 155.18pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.49pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.49pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-16.30%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 52.18pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000048637Member_C000153287Member"
      id="h_874_dfef1861_abf5_43e4_b336_22ce2675c32a">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_875_48a1492d_1ae2_45ca_9140_833c2c535629"
      unitRef="pure">0.2890</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000048637Member_C000153287Member"
      id="h_876_dda91f45_db76_4494_98bd_e6d99adef4dc">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000048637Member_C000153287Member"
      id="h_877_247ca6fa_cd1b_4c87_9e66_bdc8387ed169">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_878_64b2a209_e4fb_48ad_8fc8_5ddad43399f8"
      unitRef="pure">-0.1630</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000048637Member_C000153287Member"
      id="h_879_041dfdf9_1b38_417c_86d8_ecbb9114f738">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000048637Member"
      id="t_366_9e9b340c_e333_45b4_96c8_5f23203a347c">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000048637Member_C000153287Member"
      id="t_927_0b9340f0_5610_a4d6_d539_2dade2b5e66b">2015-06-02</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_880_083f8ea5_e5f5_48d6_905e_2180db7fe1e7"
      unitRef="pure">0.1070</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_881_e9feff59_31ad_4126_84f7_861cf7fa933d"
      unitRef="pure">0.1024</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048637Member_C000153287Member"
      decimals="4"
      id="h_882_414f7b6c_6ba8_4b31_b773_227d6262c0d3"
      unitRef="pure">0.0936</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048637Member_C000153287Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_883_ee539ceb_3de8_473c_b301_02d6871d5154"
      unitRef="pure">0.0970</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048637Member_C000153287Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_884_981e48ae_d076_4f0d_a14f_68f87c2ea149"
      unitRef="pure">0.0892</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048637Member_C000153287Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_885_f2350915_2673_4943_bd41_4aa08bec3053"
      unitRef="pure">0.0802</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048637Member_C000153287Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_886_e63d4579_c0bb_4574_8827_4ecffaba2b5d"
      unitRef="pure">0.0633</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048637Member_C000153287Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_887_14658ade_80d6_44fe_a07e_c4a171b0f171"
      unitRef="pure">0.0767</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048637Member_C000153287Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_888_f28cd6e4_9680_4d73_9d48_2f3fc19b0492"
      unitRef="pure">0.0699</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048637Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_889_60943edc_7bd1_4cfd_8ea5_159b0143a60f"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048637Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_890_5c9836a0_7a0f_445e_8e9b_3f329f50d145"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048637Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_891_ec788902_7080_4d0f_bb23_8859817124b9"
      unitRef="pure">0.0174</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000048637Member_BloombergUSConvertibleCashPayBondMember"
      decimals="4"
      id="h_892_50509d46_3c47_4947_9e02_5878c316ce28"
      unitRef="pure">0.1102</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000048637Member_BloombergUSConvertibleCashPayBondMember"
      decimals="4"
      id="h_893_1d59b475_d100_47fa_8093_eddf11aa9ec5"
      unitRef="pure">0.1077</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000048637Member_BloombergUSConvertibleCashPayBondMember"
      decimals="4"
      id="h_894_f24c5d09_9df7_4bc4_9e67_a4c5d640f81d"
      unitRef="pure">0.0985</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000048637Member"
      id="t_922_5779b1c8_13e5_30e2_7443_73724b24e283"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000048637Member"
      id="t_923_b3b4944c_aa95_dc6a_c4e2_82415a222da6">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000048637Member"
      id="t_924_422b7a38_f581_7548_02b2_040ec7ae5786">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000048637Member"
      id="t_925_a1b3c520_20a7_a230_1dab_ea5aceb06b17">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000054184Member"
      id="t_913_47c0d097_44bb_f2b1_33eb_cc58f1c94b28"> iSHARES&#xae; ESG ADVANCED HIGH YIELD CORPORATE BOND ETF  Ticker: HYXFStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000054184Member"
      id="t_367_9038268b_bbd0_426a_ac31_4c1e7276998d">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000054184Member"
      id="t_368_d397b464_d52d_4985_85b2_7d09ee808fe6"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares ESG Advanced High Yield Corporate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar denominated high yield corporate bonds from issuers with a favorable environmental, social and governance rating as identified by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the index provider, while applying extensive screens for involvement in controversial activities.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000054184Member"
      id="t_369_7c67b447_71db_46d3_aebf_cb5cef0672df">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000054184Member"
      id="t_370_287d0968_47a3_40b3_b27a_899cf73eb97f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000054184Member"
      id="t_921_2a0cf67e_54ba_e337_355e_72db2c711d41">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_895_70cfe436_d2c9_4911_895a_c3c8d71156eb"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_896_5e913f1a_5435_4eb6_8d22_159b9d2b3f67"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_897_c5bf568d_5162_4511_9b65_d0637ad92445"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_898_dadb0bc6_d2f6_420e_b518_df2a6c64faad"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000054184Member"
      id="t_914_5fedd4d4_abc2_6f16_bbf9_7c7934e59022">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000054184Member"
      id="t_953_9ea50c2a_bd41_a3b3_b765_5f66cd0f7ed7">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054184Member_C000170245Member"
      decimals="INF"
      id="h_899_d234cac3_0284_4568_9f20_8a2333aec8b6"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054184Member_C000170245Member"
      decimals="INF"
      id="h_900_7ff20c6a_751d_4d59_b02c_431238f1ce2e"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054184Member_C000170245Member"
      decimals="INF"
      id="h_901_5147b1d4_66cb_4543_ab11_4dc6bf585e6b"
      unitRef="USD">197</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054184Member_C000170245Member"
      decimals="INF"
      id="h_902_f728f98e_344c_48c4_84cc_18815ea996a8"
      unitRef="USD">443</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000054184Member"
      id="t_915_cfaad13b_f064_a834_b153_f77264bc5b22">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000054184Member"
      id="t_916_d76b859c_71aa_29d2_7570_b311e5eaf2f9">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 30% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000054184Member"
      decimals="4"
      id="h_903_25b121d9_a83c_4806_862d_9f318ee6f1f1"
      unitRef="pure">0.30</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000054184Member"
      id="t_372_e231058a_b940_49b1_b2f0_fca636369947"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000054184Member"
      id="t_373_c8d66b21_c9a8_45ec_8895_6c374cb1beb5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MSCI US High Yield Choice ESG Screened Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), developed by Bloomberg Finance L.P. and its affiliates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) with environmental, social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and governance (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ESG&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) rating inputs from MSCI ESG Research &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;LLC (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MSCI ESG Research&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) pursuant to an agreement between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MSCI ESG Research and Bloomberg Index Services Limited (a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsidiary of Bloomberg) or an affiliate. The Underlying Index is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;modified market value-weighted index with a cap on each issuer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 2% at each monthly rebalancing. The Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to reflect the performance of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high yield corporate bonds of issuers with favorable ESG ratings, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as identified by the Index Provider, while applying additional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;screens. To construct the Underlying Index, Bloomberg begins &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with the Bloomberg US Corporate High Yield Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Parent Index includes U.S. dollar-denominated, high &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yield, fixed-rate corporate bonds that: (i) are issued by companies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with a developed markets country of risk, as defined by the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider based primarily on quantitative economic criteria &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;established by the Index Provider, and (ii) have a rating of below-investment&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; grade (as determined by the Index Provider). From the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index, Bloomberg selects bonds that have $400 million or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more of outstanding face value at the time of inclusion. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index includes bonds with at least one year until final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In determining whether a bond has a rating of below investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;grade, ratings from Moody&#x2019;s Investors Services, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Standard &amp;amp; Poor&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Ratings, a subsidiary of S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered. Securities in the Underlying Index must be rated high &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yield (below BBB- by S&amp;amp;P Global Ratings and Fitch, or below Baa3 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Moody's) using the middle rating from Moody&#x2019;s, S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings, and Fitch. When a rating from only two agencies is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;available, the lower of the two agencies&#x2019; ratings is used. When a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rating from only one agency is available, that rating is used to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determine eligibility in the Underlying Index. Securities that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated below investment grade are commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;To select favorable ESG rated companies from the Parent Index, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MSCI excludes companies with an ESG controversy score of less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than three (3) or an ESG rating below BB. To determine if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are involved in ESG business controversies, MSCI &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assesses the possible negative environmental, social, and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;governance impact of a company&#x2019;s operations or products on a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;scale from zero to ten, with zero being the most severe &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controversy rating. To determine ESG ratings, MSCI rates the ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics of securities on a scale of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CCC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (lowest) to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;AAA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(highest). MSCI then evaluates a company&#x2019;s risks and &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;opportunities using a sector-specific ESG Key Issues (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Key &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Issues&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, carbon emissions) selection and weighting model. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Each company is scored on a scale of 0 to 10, with 10 being the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;highest, for each Key Issue before being provided an ESG rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on average Key Issue score. MSCI ESG Research also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excludes securities of companies involved in adult entertainment, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;alcohol, gambling, tobacco, genetically modified organisms, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controversial weapons, nuclear weapons, civilian firearms, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conventional weapons, palm oil, for-profit prisons, predatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending, and nuclear power based on revenue or percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;revenue thresholds for certain categories (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., $500 million or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;50%) and categorical exclusions for others (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;nuclear &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weapons). MSCI ESG Research screens companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involvement in fossil fuels by excluding the securities of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;company in the Bloomberg Class 3 energy sector (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers in the energy sector include both independent and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;integrated exploration and production companies, as well as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;midstream oil field services, and refining companies) and all &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies with an industry tie to fossil fuels such as thermal coal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oil and gas&#x2014;in particular, reserve ownership, related revenues &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and power generation. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on a monthly basis, on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business day of each month. As of October 31, 2024, a significant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portion of the Underlying Index is represented by securities of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies in the communications, consumer goods and services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and industrials industries or sectors. The components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are likely to change over time. As of October 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2024, the Underlying Index had 731 components.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options, and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, MSCI ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Research, or their affiliates, which are&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA. The Index Provider determines the composition and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative weightings of the securities in the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000054184Member"
      id="t_958_7e5f310c_1be5_9f55_131b_fa615267b25a">Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.</rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000054184Member"
      id="t_374_a332c757_10c9_4af8_ba00_c79ef183f765"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000054184Member_RiskLoseMoneyMember"
      id="t_922_5d0837e2_36b9_b512_6ab8_a48d79235c9d">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_HighYieldSecuritiesRiskMember"
      id="t_923_17047643_fd89_03c2_8d4f_496a15738703"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_ESGRiskMember"
      id="t_924_f2aa388b_3871_dd3e_01e1_e82f11e3d8e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;ESG Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;To the extent that the Underlying Index uses criteria &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to the ESG characteristics of issuers, this may limit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;types and number of investment opportunities available to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and, as a result, the Fund may underperform other funds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;whose underlying index does not use ESG criteria. The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&#x2019;s use of ESG criteria may result in the Fund investing in, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;allocating greater weight to, securities or market sectors that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform the market as a whole or underperform other funds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that use ESG criteria. In addition, the use of representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sampling may result in divergence of the Fund&#x2019;s overall ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics or ESG risk from those of the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may evaluate security-level ESG data and, if &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable, ESG objectives or constraints that are relevant to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index only at index reviews or rebalances. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index may cease to meet the relevant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ESG criteria but may nevertheless remain in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the Fund until the next review or rebalance by the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider. As a result, certain securities in the Underlying Index, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index as a whole, may not meet the relevant ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objectives or constraints at all times.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_CreditRisksMember"
      id="t_925_4dd71802_247a_624f_5db5_292a2b6a146f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_IncomeRiskMember"
      id="t_926_40ca4471_b786_c105_1d37_e7fc8aa4f24e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_MarketRiskMember"
      id="t_927_f395179b_cf99_c5b9_4ade_3c5c3d0d3d2b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_IndexRelatedRiskMember"
      id="t_928_6dd77968_12be_4a98_b3b8_343a8f057253"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_AssetClassRiskMember"
      id="t_929_792d52b0_88fe_7de5_5aca_7f6fedb9cea5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000054184Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_930_46a50a50_1cda_4376_8937_d53d9ce3673c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000054184Member_CallRiskMember"
      id="t_931_0f9dd3d0_e571_23c2_3e46_8d8c1d025387"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000054184Member_CommunicationServicesSectorRiskMember"
      id="t_932_76796f9d_db9e_2d30_4d9b_f5798510cc54"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Communication Services Sector Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Companies in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;communications sector may be affected by industry competition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantial capital requirements, government regulation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyclicality of revenues and earnings, obsolescence of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;communications products and services due to technological &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advancement, a potential decrease in the discretionary income of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;targeted individuals and changing consumer tastes and interests.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_ConcentrationRiskMember"
      id="t_933_6134b568_2bcc_5b07_4757_6ef6265f51b3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_934_75cc8def_b489_646f_2ee4_cbf80fca2d8c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000054184Member_CybersecurityRiskMember"
      id="t_935_6ab37287_6e9d_ca0d_301f_f4e8339e43f6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000054184Member_IlliquidInvestmentsRiskMember"
      id="t_936_582e79cb_859c_5b9d_0cce_735655d0a67d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_IndustrialCompaniesRiskMember"
      id="t_937_af57438b_e2ae_b6cd_cc90_4c096bf48643"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_InterestRateRisksMember"
      id="t_938_1cd33536_6181_d8c0_6d93_2a2051ba654f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_IssuerRiskMember"
      id="t_939_52021913_25fa_41b4_74b6_21aee93accdc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_ManagementRiskMember"
      id="t_940_cdc90b1a_c786_ae13_997d_f52cc862bb17"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_MarketTradingRiskMember"
      id="t_941_e96c9d13_51c8_6fc2_e69d_55b705fcfbdb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_OperationalRiskMember"
      id="t_942_c46946ca_14ff_aa9d_7656_62c72e2aa702"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_943_ee2297cd_6a35_0108_d3ab_4039197ee07a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_RiskOfInvestingInTheUSMember"
      id="t_944_e3b3fd85_1ead_335d_b67e_f7264c85e93b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_SecuritiesLendingRiskMember"
      id="t_945_183464ba_f4cf_3aea_cd0f_e7855699933d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_TrackingErrorRiskMember"
      id="t_946_2ade33a0_1d97_afbe_3ba1_5c3cd78652e7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054184Member_ValuationRiskMember"
      id="t_947_7242da55_a308_7504_061e_229b1af22f9a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000054184Member"
      id="t_917_70056b85_0551_d47d_7025_c12d6e7b822f"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000054184Member"
      id="t_918_fca8cbe9_c783_726e_d6b5_a434d24d8bd3"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000054184Member"
      id="t_949_ec64022a_cbb4_149a_60d2_9bfcd0e7acb8">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000054184Member"
      id="t_950_aef0a8b3_2deb_d26a_0f48_a99de2e93d63">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000054184Member"
      id="t_951_9edd98a6_55dd_9059_e22f_036586d5f0d7">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000054184Member"
      id="t_952_ca4b044d_b1fb_18f2_904c_83226cfa2afc">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000054184Member"
      id="t_919_d5eceb1f_5297_6cf9_61c7_e2665c02afdf"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000054184Member"
      id="t_920_f8f02948_31d6_fea0_b870_223746713a8c"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 3.96pt;"&gt;7.81%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-9.33%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000054184Member_C000170245Member"
      id="h_907_136dc03a_11ff_4e1c_a10e_abf9a59fcbb7">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_908_2251313c_402f_4114_a44e_12f873579e44"
      unitRef="pure">0.0781</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000054184Member_C000170245Member"
      id="h_909_bb679c0a_ddf2_4f51_9e02_3cfe1353503d">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000054184Member_C000170245Member"
      id="h_910_2d120a5f_6642_4540_95a7_31b4a4eb7368">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_911_55016fad_2272_4638_8032_1dbb5a69ddba"
      unitRef="pure">-0.0933</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000054184Member_C000170245Member"
      id="h_912_d0fcc7b1_1564_4b25_a41f_4a98315ae956">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000054184Member"
      id="t_377_e6168145_1ff0_44f0_84dd_b91e8a6dc81f">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000054184Member_C000170245Member"
      id="t_948_7fd64524_6fea_1eb3_6a3b_0749954f13f3">2016-06-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_913_bee9ddc2_a8d6_4397_b801_874d0f6216f3"
      unitRef="pure">0.0785</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_914_d9805c33_268e_49ec_9264_265e368310af"
      unitRef="pure">0.0305</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054184Member_C000170245Member"
      decimals="4"
      id="h_915_ca98a1b1_f181_4343_83fe_694e3ff9a856"
      unitRef="pure">0.0485</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054184Member_C000170245Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_916_c62eecb3_edae_4a41_89c9_e40671647d8e"
      unitRef="pure">0.0505</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054184Member_C000170245Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_917_8e3c37dd_89c5_4012_b4c5_e0bb1291e24d"
      unitRef="pure">0.0078</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054184Member_C000170245Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_918_7bb96008_a36b_4e07_9126_30811aff2cab"
      unitRef="pure">0.0248</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054184Member_C000170245Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_919_f0d8e0f5_05bc_4b0b_9e38_f79173795c33"
      unitRef="pure">0.0459</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054184Member_C000170245Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_920_39cc58e5_8399_484e_83f1_393dd51ebdeb"
      unitRef="pure">0.0133</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054184Member_C000170245Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_921_f30129d3_d18a_4406_874a_d6d7633709b2"
      unitRef="pure">0.0267</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054184Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_922_ddfe52f7_39df_4d03_b2a4_7d6a18b83d22"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054184Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_923_b476b47c_6a92_4359_b0ce_3e3eedd95696"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054184Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_924_6434ac02_6da4_4e03_a063_877a0395f3c9"
      unitRef="pure">0.0142</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054184Member_BloombergMSCIUSHighYieldChoiceESGScreenedIndexMember"
      decimals="4"
      id="h_925_848041c4_e103_428f_8150_af19b339313f"
      unitRef="pure">0.0792</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054184Member_BloombergMSCIUSHighYieldChoiceESGScreenedIndexMember"
      decimals="4"
      id="h_926_3e2e18e6_fa0f_4ed2_8080_b1bae72419c5"
      unitRef="pure">0.0318</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054184Member_BloombergMSCIUSHighYieldChoiceESGScreenedIndexMember"
      decimals="4"
      id="h_927_5b751d1d_56c5_4599_b6d2_bbb6424a8d77"
      unitRef="pure">0.0509</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000054184Member"
      id="t_957_0e8c271a_01d9_0025_3d4b_9cd0e0ef6b89">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000054184Member"
      id="t_954_0cc3d543_5a02_670d_37c9_d7d3f08fe131">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000054184Member"
      id="t_955_fa58909b_ba19_911c_4108_e6f3dcf76b8c">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000054184Member"
      id="t_956_67be8708_4bab_d86a_2a2c_7f6097b80a04">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000054186Member"
      id="t_946_e9beae15_5d52_1bca_1b69_5f10c97db1a2"> iSHARES&#xae; FALLEN ANGELS USD BOND ETF  Ticker: FALNStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000054186Member"
      id="t_378_e6f3f2b1_7e60_4d4e_a63b_3256de5c9fd3">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000054186Member"
      id="t_379_e28513b8_5cfc_4cfc_b999_a80740659dd7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Fallen Angels USD Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; high yield corporate bonds that were previously rated investment grade.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000054186Member"
      id="t_380_c0bd1da4_06bd_48d2_b035_eecf41737d8c">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000054186Member"
      id="t_381_ee6aab78_db0a_43a3_b1b3_ad771e4514f9"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000054186Member"
      id="t_947_dd369685_8994_739c_3103_2699cbd66976">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_928_c1d1a0a7_0e33_4fc6_a134_e14a08ef27d2"
      unitRef="pure">0.0025</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_929_be59d1bb_a381_48b5_a55d_bb43288d6831"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_930_fb5522b9_ab34_4d31_a642_e879080cb5ed"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_931_de3bd5e6_2251_4368_b217_eec862443474"
      unitRef="pure">0.0025</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000054186Member"
      id="t_948_12d1ba48_87f8_6fab_f5f0_5a81912d1e9a">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000054186Member"
      id="t_980_8ccf85e5_88be_fab2_0104_01d4149cbe52">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000054186Member_C000170247Member"
      decimals="INF"
      id="h_932_e15279e7_5978_435f_b49a_308085cd2613"
      unitRef="USD">26</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000054186Member_C000170247Member"
      decimals="INF"
      id="h_933_d2981f7d_1a44_4537_a920_ebc88565d059"
      unitRef="USD">80</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000054186Member_C000170247Member"
      decimals="INF"
      id="h_934_9aab5b68_4f16_4ca1_aa7c_ef6c78a140de"
      unitRef="USD">141</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000054186Member_C000170247Member"
      decimals="INF"
      id="h_935_58d1fab6_3dad_4e06_827c_ca03d5bac880"
      unitRef="USD">318</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000054186Member"
      id="t_949_d5b85ee5_b216_c048_7d60_26b748d91aeb">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000054186Member"
      id="t_950_69fb2a91_e304_f4a8_fec9_9d874a078117">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 22% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000054186Member"
      decimals="4"
      id="h_936_8086082b_48c8_4a58_abf2_46089a77ec2f"
      unitRef="pure">0.22</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000054186Member"
      id="t_383_c0af9de8_fa74_4cd0_8c77_686ac4b32732"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000054186Member"
      id="t_384_f3dbc132_934f_44b1_8982_cb02df4af427"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;US High Yield Fallen Angel 3% Capped Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is designed to reflect the performance of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar denominated, high yield (as determined by Bloomberg Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds that were previously rated investment grade. Bonds are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market value weighted with a 3% cap on each issuer.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The bonds eligible for inclusion in the Underlying Index are U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated corporate bonds that: (i) are issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies domiciled in countries classified as developed markets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Index Provider (based primarily on World Bank income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classifications); (ii) have an average rating of below-investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;grade (as determined by the Index Provider); (iii) previously had an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;average rating of investment grade; (iv) have at least $150 million &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of outstanding face value; (v) have a fixed-rate coupon; and (vi) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have at least one year to maturity.&#160;&#160;In determining whether a bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has an average rating of investment grade or below-investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;grade, ratings from Moody&#x2019;s Investors Services, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P Global Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered. Securities in the Underlying Index must be rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;below-investment grade (lower than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global Ratings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and Fitch, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody&#x2019;s) using the middle rating of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s, S&amp;amp;P Global Ratings, or Fitch after dropping the highest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and lowest available ratings. When a rating from only two &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies is available, the lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more conservative&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; rating is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used. When a rating from only one agency is available, that rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is used to determine eligibility in the Underlying Index. If an issue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is unrated, the Index Provider may consider expected ratings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or issuer-level ratings adopted by a ratings agency. There is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no limit to the number of issues in the Underlying Index, but as of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, the Underlying Index included approximately &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;159 constituents. As of October 31, 2024, a significant portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index is represented by&#160;&#160;securities of companies in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the consumer goods and services and industrials industries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sectors. The components of the Underlying Index are likely to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; &#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000054186Member"
      id="t_990_e1e69773_2826_d575_9810_8b47ddd39ef1">Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.</rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000054186Member"
      id="t_385_307de681_949e_40bd_972c_a23690b87ccb"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000054186Member_RiskLoseMoneyMember"
      id="t_951_c4ef83b8_43eb_6f75_c594_40adb0d8c3bf">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_HighYieldSecuritiesRiskMember"
      id="t_955_8aabad3f_41b6_2cc9_902d_46bee9dd0fa5"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch, or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by Moody's), or are unrated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be deemed speculative, may involve greater levels of risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than higher-rated securities of similar maturity and may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_CreditRisksMember"
      id="t_956_18f59b27_562f_4cdb_0777_d046623b050f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_IncomeRiskMember"
      id="t_957_59a4c47a_9222_d3bf_3e85_2a4ec40cebdf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_MarketRiskMember"
      id="t_958_9aa93912_ed8f_d296_65df_cf6da94f5224"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_IndexRelatedRiskMember"
      id="t_959_90848cad_e3a3_033d_7c7f_ec9d3d932369"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_AssetClassRiskMember"
      id="t_960_3c65e266_c6b5_fdfa_f278_c9d80bfa4ed0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_961_b57a2bb1_6f7f_2624_5bf6_8d3b47be19d3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_CallRiskMember"
      id="t_962_8307b541_62ea_8cee_b90b_1714779007c3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_CommodityRiskMember"
      id="t_963_33314f03_b712_a6c6_450e_eb3230871722"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commodity Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in companies that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;susceptible to fluctuations in certain commodity markets and to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price changes due to trade relations. Any negative changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity markets that may be due to changes in supply and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand for commodities, market events, war, regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, other catastrophic events, or other factors that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund cannot control could have an adverse impact on those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_ConcentrationRiskMember"
      id="t_964_c5860c24_f043_573f_6871_62ea52009bf1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_ConsumerGoodsAndServicesCompaniesRiskMember"
      id="t_965_1ef0910b_c0a7_b2db_f13e_bf8da27649be"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Consumer Goods and Services Companies Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;goods and services companies (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer companies&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) face risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to changes in consumer preferences and disposable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income, commodity prices, government regulation, supply chain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disruptions, damage to brand or reputation, economic slowdown &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and labor shortages, among other things.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_CybersecurityRiskMember"
      id="t_966_340f8232_a89d_ef9e_47fe_bc5d72f0703c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_IlliquidInvestmentsRiskMember"
      id="t_967_c6c8f111_5c81_035a_cf86_314a45b97485"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_IndustrialCompaniesRiskMember"
      id="t_968_fcdf9007_5816_9ff3_852c_171b66a6e556"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Industrial Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Industrial companies face a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risks, including supply chain and distribution disruptions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business interruptions, product obsolescence, third-party vendor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, cyber attacks, trade disputes, product recalls, liability &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;claims, scarcity of materials or parts, excess capacity, changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consumer preferences, and volatility in commodity prices and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies. The performance of such companies may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by technological developments, labor relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative and regulatory changes, government spending policies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and changes in domestic and international economies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_InterestRateRisksMember"
      id="t_969_0b47504a_72f3_370c_bbcc_139c60c49c6c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_IssuerRiskMember"
      id="t_970_5582c0bc_127c_c26a_f4fb_617d987193f9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_ManagementRiskMember"
      id="t_971_e57b8704_a43a_444a_d054_60dc81c30479"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_MarketTradingRiskMember"
      id="t_972_3c0c4213_b83d_24fb_bda9_344188267332"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_OperationalRiskMember"
      id="t_973_5998c568_fa84_9671_8341_d589d8d83276"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_974_cee62313_0602_98a9_d11b_e3b6f995b90d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_RiskOfInvestingInTheUSMember"
      id="t_975_ca65b564_207f_e86e_a598_5b81c44063cf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_SecuritiesLendingRiskMember"
      id="t_976_aeb3bcb4_b561_9afb_e32b_142998af161c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_TaxRiskMember"
      id="t_977_a5525e40_012f_e55b_573a_b6576e64035a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in derivatives. The federal income tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;treatment of a derivative may not be as favorable as a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in an underlying asset. Derivatives may produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable income and taxable realized gain. Derivatives may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the timing, character and amount of income the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund realizes from its investments. As a result, a larger portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s distributions may be treated as ordinary income rather &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than as capital gains. In addition, certain derivatives are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mark-to-market or straddle provisions of the Internal Revenue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Code of 1986, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Internal Revenue Code&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). If such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provisions are applicable, there could be an increase (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decrease) in the amount of taxable dividends paid by the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Income from swaps is generally taxable. In addition, the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;treatment of certain derivatives, such as swaps, is unsettled and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to future legislation, regulation or administrative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pronouncements issued by the U.S. Internal Revenue Service &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_TrackingErrorRiskMember"
      id="t_978_ea672968_22b5_fde1_c391_f669fc8feabb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000054186Member_ValuationRiskMember"
      id="t_979_4be9bb9d_490a_6176_6331_44d37890d537"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000054186Member"
      id="t_386_05df9326_023c_44fa_9975_d26a24748554"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000054186Member"
      id="t_954_efb0db21_5fdd_6aab_912d_8516054056cc"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000054186Member"
      id="t_981_0683c577_70b1_7e20_07da_699a7d83021d">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000054186Member"
      id="t_982_27538dd5_1113_c926_e7fc_13bdf028bcb7">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000054186Member"
      id="t_983_e235bdfe_9974_0448_2224_39e133e1aad2">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000054186Member"
      id="t_984_634aac2a_0f0f_fe0d_bcdd_310cd1b95194">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000054186Member"
      id="t_953_5f152f93_21f6_6e97_f336_907d5b45daba"> Calendar Year by Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000054186Member"
      id="t_952_9975c06a_4843_87c2_ea2c_6558bf09b86f"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.49pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.49pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 4.18pt;"&gt;19.16%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.49pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.49pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-16.54%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
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      id="h_940_46b82107_640b_4466_9fa8_7d6f5310eb00">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_941_49f98ecc_f6da_476e_ae6e_4572de40cfd1"
      unitRef="pure">0.1916</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000054186Member_C000170247Member"
      id="h_942_675503a7_a2b2_4800_b54e_38461b99da17">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000054186Member_C000170247Member"
      id="h_943_98f27bf9_148e_467c_a6f7_265e4cf20472">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_944_379ca071_1162_408c_aa13_a2c41212499b"
      unitRef="pure">-0.1654</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000054186Member_C000170247Member"
      id="h_945_1f149a6c_4134_4ec4_bd76_d208484d4cf5">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000054186Member"
      id="t_388_6bdf66b7_22f4_403f_97ef_e9f5f44b8b4b">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000054186Member_C000170247Member"
      id="t_988_775fb5be_6f75_0332_9b57_f2089cce994a">2016-06-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_946_c45535a1_8cad_4b41_a4e4_adbaf974dd56"
      unitRef="pure">0.0744</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_947_763b9ef6_fbc2_4416_893e_245c0f0891ee"
      unitRef="pure">0.0508</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054186Member_C000170247Member"
      decimals="4"
      id="h_948_ba6e5f37_db1b_45d6_a56e_4031bb73478c"
      unitRef="pure">0.0654</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054186Member_C000170247Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_949_5c1dcd3c_0feb_4a8b_a49b_908f1dbf53ce"
      unitRef="pure">0.0474</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054186Member_C000170247Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_950_10ab6884_e781_4cf8_8ea8_6fb448e996af"
      unitRef="pure">0.0289</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054186Member_C000170247Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_951_ea8972fa_d848_4dc5_b0d7_e8eebed8af74"
      unitRef="pure">0.0413</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054186Member_C000170247Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_952_0bd9957a_4cda_4943_bc8f_e8aabd7de2d2"
      unitRef="pure">0.0435</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054186Member_C000170247Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_953_dcebe24e_6667_4e64_b21a_d4baef5d02b5"
      unitRef="pure">0.0293</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054186Member_C000170247Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_954_1f65385e_9e7f_4e87_aa67_cc039bf7a660"
      unitRef="pure">0.0398</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
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      decimals="4"
      id="h_955_3799f029_5cad_4ba7_a438_3afa4bd1a899"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
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      contextRef="S000054186Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_956_b1214005_545c_4b83_88fa_8e0f44983f62"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054186Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_957_d687eaa1_3200_4da7_85e7_42ee6be46bda"
      unitRef="pure">0.0142</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000054186Member_BloombergUSHighYieldFallenAngel3CappedIndexMember"
      decimals="4"
      id="h_958_ce4241ee_9bb3_423a_a22a_d445962cf411"
      unitRef="pure">0.0679</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000054186Member_BloombergUSHighYieldFallenAngel3CappedIndexMember"
      decimals="4"
      id="h_959_0973a44e_fad1_4eca_a952_812c299baf49"
      unitRef="pure">0.0550</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000054186Member_BloombergUSHighYieldFallenAngel3CappedIndexMember"
      decimals="4"
      id="h_960_9602e2b8_8307_499f_8b25_fab060a167d5"
      unitRef="pure">0.0687</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000054186Member"
      id="t_989_c657945c_86be_5a46_4946_e6b291ae8dd7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000054186Member"
      id="t_985_8f1dfe1f_ff98_77e3_9999_1188a68269de">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000054186Member"
      id="t_986_f7dfe1c2_4cc0_261a_2150_c649d37324cc">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000054186Member"
      id="t_987_ecb05f51_3df6_3d88_7b78_e69266a0dc2e">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000035915Member"
      id="t_982_f16aa1a7_da43_8856_6c4c_46d885e21f38"> iSHARES&#xae; GNMA BOND ETF  Ticker: GNMAStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000035915Member"
      id="t_389_e3e4440c_3ebf_4376_9253_659714f180e3">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000035915Member"
      id="t_390_2fb3623f_b1fd_45b2_91ca_d19881b2f7a1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares GNMA Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of mortgage-backed pass-through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities guaranteed by the Government National Mortgage Association (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;GNMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ginnie Mae&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000035915Member"
      id="t_391_9e639b5b_6ce6_4d53_9e6c_ae2e2c80f7a6">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000035915Member"
      id="t_392_e5544f8f_d631_46a0_bfdb_7c6508fa187f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other registered investment companies through February 28, 2029. The contractual waiver may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be terminated prior to February 28, 2029 only upon written agreement of the Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000035915Member"
      id="t_1027_f934268c_8420_8065_ebc3_0523da1d2b56">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000035915Member"
      id="t_1028_51ffbc4e_e01d_61d7_3edd_24b29a7c3c2e">February 28, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000035915Member"
      id="t_1009_17fb3476_a20d_3bbc_9675_c5e59ee0f18b">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_961_aa054a43_98e5_4ec0_9b20_d47ef184f342"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_962_783f224d_8152_4220_ae5b_4f98722c2dda"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_963_f352a652_fae6_419b_bba3_c45d56db5c26"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_964_1a5b9c93_dd32_45d1_8fb9_4aff560ca8d6"
      unitRef="pure">0.0001</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_965_eb0becd3_269b_41c8_9613_77f95081678d"
      unitRef="pure">0.0011</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_966_9205c320_ac4f_4e30_8fcb_02a846b4ed60"
      unitRef="pure">-0.0001</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_967_ce9c3720_4781_493a_a452_b68a5bfa1711"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000035915Member"
      id="t_984_b13129f2_4caa_6603_9e34_fcd4c5dafe38">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000035915Member"
      id="t_1021_289fc0d4_4d37_5eff_7102_c722aa117a9f">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000035915Member_C000110080Member"
      decimals="INF"
      id="h_968_b10bceae_dd34_4084_933d_a1e2799fc5c1"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000035915Member_C000110080Member"
      decimals="INF"
      id="h_969_3d0ce696_3cef_4da6_adaf_88ac9f3e518e"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000035915Member_C000110080Member"
      decimals="INF"
      id="h_970_fd3675c1_3b62_4725_983d_59237a1e027a"
      unitRef="USD">58</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000035915Member_C000110080Member"
      decimals="INF"
      id="h_971_f8ac7066_9bc3_4215_b9a6_b3719c5f21c8"
      unitRef="USD">137</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000035915Member"
      id="t_985_5a8a2882_8791_59e4_2af8_03becde636f1">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000035915Member"
      id="t_986_a1251cc6_8dd7_db58_ad5e_569427975dbe">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 283% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000035915Member"
      decimals="4"
      id="h_972_76c94115_cfd7_487d_849c_f7c878167db2"
      unitRef="pure">2.83</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000035915Member"
      id="t_394_488dde32_f329_4bad_8fb4_3f3944db9848"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000035915Member"
      id="t_395_ff79e40b_1a5f_43f3_ad79_b004dd7f651f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. GNMA Bond Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market capitalization-weighted index that measures the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of mortgage-backed pass-through securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MBS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) issued by GNMA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes fixed-rate MBS issued by GNMA &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that have 30- or 15-year maturities. All securities in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index must have a weighted average maturity of at least one year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and have $1 billion or more of outstanding face value. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index are updated on the last calendar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;day of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index and to-be-announced &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that have economic characteristics that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantially identical to the economic characteristics of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities of the Underlying Index, and the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest at least 90% of its assets in fixed income securities of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;types included in the Underlying Index that BFA believes will help &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a TBA position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for purposes of calculating investments in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index. Cash and cash equivalent &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments associated with a derivative position will be treated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as part of that position for the purposes of calculating the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Most transactions in MBS occur through standardized contracts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for future delivery in which the exact mortgage pools to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;delivered are not specified until a few days prior to settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(TBAs). The Fund may enter into such contracts for fixed-rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pass-through securities on a regular basis. The Fund, pending &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;settlement of such contracts, will invest the relevant assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid, short-term instruments, including shares of money market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;funds advised by BFA or its affiliates. The Fund will assume its pro &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rata share of the fees and expenses of any money market fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that it may invest in, in addition to the Fund's own fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses. The Fund may also acquire interests in mortgage pools &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through means other than such standardized contracts for future &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;delivery. The Fund seeks to track the investment results of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s investments in MBS (including transactions occurring &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through TBAs) will be limited to GNMA issuances.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg Index Services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000035915Member"
      id="t_1026_f1592a08_c6d5_4b15_fd64_221176422901">Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.</rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000035915Member"
      id="t_396_326fb5d0_75f1_41b8_8a30_1d9a80a684c1"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000035915Member_RiskLoseMoneyMember"
      id="t_987_841f0b59_5840_3686_d02d_dbe5d5c133f7">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_RiskOfInvestingInGinnieMaeSecuritiesMember"
      id="t_988_a789617e_f77c_8d10_616e_259a68db8435"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Ginnie Mae Securities&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantially in MBS for which Ginnie Mae guarantees the timely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payment of principal and interest. Ginnie Mae&#x2019;s guarantee is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;backed by the full faith and credit of the U.S. government. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;actual or potential disruption to Ginnie Mae, or the financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;condition or credit of the U.S. government, could cause the value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of Ginnie Mae securities to decline. MBS represent interests in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pools&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; of mortgages and are subject to interest rate, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prepayment, and extension risk. MBS react differently to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in interest rates than other bonds, and the prices of MBS may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect adverse economic and market conditions. Small &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;movements in interest rates (both increases and decreases) may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;quickly and significantly reduce the value of certain MBS. MBS are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also subject to the risk of default on the underlying mortgage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;loans, particularly during periods of economic downturn. Default &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or bankruptcy of a counterparty to a TBA transaction would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expose the Fund to possible losses.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_InterestRateRisksMember"
      id="t_989_637241e2_a2ec_1274_1797_662f4a2d23f1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_RiskOfInvestingInTheUSMember"
      id="t_990_a9cd609d_5b76_987b_4983_e6a7e509b3fb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_MarketRiskMember"
      id="t_991_d8eaf2eb_14d9_7a86_e58c_8e2ee338f337"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_IndexRelatedRiskMember"
      id="t_992_dd505413_7580_4722_c020_aa7ad048f855"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_AssetClassRiskMember"
      id="t_993_93a6d319_8ac7_762b_c65e_bfed22b6dad7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_994_ea710940_1409_0e2a_fd1e_c0c08829b829"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_CallRiskMember"
      id="t_995_696ac2f0_3c7c_bd8f_157c_defe1967023f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_CashTransactionsRiskMember"
      id="t_996_a7bcd5f1_c505_83de_0010_7cc26c7afa93"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cash Transactions Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund expects to effect all of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creations and redemptions for cash, rather than in-kind securities. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As a result, the Fund may have to sell portfolio securities at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inopportune times in order to obtain the cash needed to meet &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;redemption orders. This may cause the Fund to sell a security and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;recognize a capital gain or loss that might not have been incurred &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if it had made a redemption in-kind. The use of cash creations and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;redemptions may also cause the Fund&#x2019;s shares to trade in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market at wider bid-ask spreads or greater premiums or discounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_ConcentrationRiskMember"
      id="t_997_d8a54272_ac07_0cf7_42d3_305f43ceea26"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_CybersecurityRiskMember"
      id="t_998_33b49d65_04f4_914f_c392_e89e9711ee70"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_ExtensionRiskMember"
      id="t_999_56e869b2_0c24_ddf7_a8bc_d6d5b5b7177e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s income and potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the value of the Fund&#x2019;s investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_HighPortfolioTurnoverRiskMember"
      id="t_1000_ceab119a_7b80_611a_acc6_2e47513b12aa"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Portfolio Turnover Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; High portfolio turnover is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered by the Fund to mean turnover of greater than 100% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;annually. Portfolio turnover (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the sale of securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets and reinvestment in other securities or assets) generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves transaction costs to the Fund, including brokerage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commissions, dealer mark-ups and other costs. In addition, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale of securities by the Fund may result in the realization of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable capital gains, including short-term capital gains. Higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio turnover may cause the Fund to incur additional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transaction costs, which have the effect of reducing the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment return, and may result in different tax consequences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for shareholders compared to a fund with lower portfolio turnover.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_IlliquidInvestmentsRiskMember"
      id="t_1001_96f00dc5_9b76_a5d8_358b_8974c2a89468"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_IncomeRiskMember"
      id="t_1002_4fc5285f_13e4_75b4_5496_4ac75fac1868"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_IssuerRiskMember"
      id="t_1003_283541eb_454a_05c0_b7e4_4a07ccb33ab1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1004_39417867_2111_57a7_d429_be80480aa7ad"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_ManagementRiskMember"
      id="t_1005_ddbf1cc0_57a3_ef5f_22a3_38acc9d245b6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_MarketTradingRiskMember"
      id="t_1006_f98374f2_3f7d_c5e8_00c2_22978d461b5f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_OperationalRiskMember"
      id="t_1007_d73471da_e3c9_5138_b50d_58aedbf81564"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_PrepaymentRisksMember"
      id="t_1008_a3f9e8c3_c757_6ca8_87cc_bca279b47a9a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Prepayment Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During periods of falling interest rates, issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of certain debt obligations may repay principal prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security&#x2019;s maturity, which may cause the Fund to have to reinvest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in securities with lower yields or higher risk of default, resulting in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a decline in the Fund&#x2019;s income or return potential.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_TrackingErrorRiskMember"
      id="t_1010_638e1779_aefe_34d6_5ba2_5792499e0076"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_USAgencyMortgageBackedSecuritiesRiskMember"
      id="t_1011_c8a0e0df_4770_8a93_6057_c0ee5812d710"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Agency Mortgage-Backed Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in MBS issued or guaranteed by the U.S. government or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;one of its agencies or sponsored entities, some of which may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be backed by the full faith and credit of the U.S. government. MBS &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represent interests in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pools&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; of mortgages and are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rate, prepayment, and extension risk. MBS react &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differently to changes in interest rates than other bonds, and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prices of MBS may reflect adverse economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions. Small movements in interest rates (both increases and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decreases) may quickly and significantly reduce the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain MBS. MBS are also subject to the risk of default on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying mortgage loans, particularly during periods of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic downturn. Default or bankruptcy of a counterparty to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBA transaction would expose the Fund to possible losses.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035915Member_ValuationRiskMember"
      id="t_1012_8fc1f01a_9053_19d4_0b95_cb66e5ebd187"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000035915Member"
      id="t_397_971738ce_7131_4cc7_ae7b_ee939c4f76bb"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000035915Member"
      id="t_1014_d44ebf3a_e078_bed7_9f8d_47778443e2d7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000035915Member"
      id="t_1015_0c830e00_a08d_af34_d046_40573cd3cf99">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000035915Member"
      id="t_1016_f1ac08ab_2345_2f7e_5a18_07dcee66618c">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000035915Member"
      id="t_1017_cfed9eeb_36bd_4a2f_bb7e_861ddee530fd">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000035915Member"
      id="t_1018_8b24e4a2_dd52_9efe_c0e0_8c1c92f74d99">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000035915Member"
      id="t_1013_9638513b_b5a4_d45c_d928_4b5e07ca6819"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000035915Member"
      id="t_1019_9006b45c_25f1_fd6d_e15d_96900f81d35c"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.16pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.16pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.57pt;"&gt;7.27%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.16pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.16pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.16%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000035915Member_C000110080Member"
      id="h_976_7be8e79b_c4c7_4ca7_b505_c659a94ca6f0">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_977_9f60c2da_0093_4f8a_95ac_73d29e176002"
      unitRef="pure">0.0727</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000035915Member_C000110080Member"
      id="h_978_790d2ddc_9f42_4e05_82b7_285f654830be">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000035915Member_C000110080Member"
      id="h_979_6626fb5a_cffc_4a8f_96b5_269f7695be37">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_980_4401ee3a_7712_40b4_a880_4d8ef917faf3"
      unitRef="pure">-0.0516</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000035915Member_C000110080Member"
      id="h_981_d611579d_a6f6_42bb_847a_bf63b434f65b">2022-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000035915Member"
      id="t_399_df1541aa_fd92_46de_b9a3_4a688c1544f7">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000035915Member_C000110080Member"
      id="t_1020_2f3f5241_ef41_e35f_07fb_2c9b9ba5b433">2012-02-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_982_637a0e38_8e2f_4591_8b7d_ccf90d70b05d"
      unitRef="pure">0.0107</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_983_104ccaa6_31d7_478f_8f56_4446c2b29924"
      unitRef="pure">-0.0070</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035915Member_C000110080Member"
      decimals="4"
      id="h_984_fd65e293_7f69_41f7_b4c8_8923763488af"
      unitRef="pure">0.0068</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035915Member_C000110080Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_985_61e99204_0597_4bd8_a70e_316226f34278"
      unitRef="pure">-0.0060</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035915Member_C000110080Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_986_e238691f_ef3a_4530_87a1_6ee3643ea859"
      unitRef="pure">-0.0159</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035915Member_C000110080Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_987_07da99af_bad6_41c3_911b_1b004bd669f3"
      unitRef="pure">-0.0021</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035915Member_C000110080Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_988_fac1517f_469a_4bf5_a468_6e8aa747fd91"
      unitRef="pure">0.0062</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035915Member_C000110080Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_989_bda1e2d4_663e_4cf3_8cd8_1f7d7c30ce88"
      unitRef="pure">-0.0090</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035915Member_C000110080Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_990_56bcc8ae_c2a2_4d22_ac03_39aab9068dec"
      unitRef="pure">0.0014</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035915Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_991_41640501_b027_42a0_b697_fd46136cbedd"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035915Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_992_0414a196_a753_4ee0_b9b8_1abb88015a95"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035915Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_993_a0f21e27_22d0_457a_bc92_ed3057744496"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035915Member_BloombergUSGNMABondIndexMember"
      decimals="4"
      id="h_994_daa76b72_f7a2_464c_8574_d97ed138741b"
      unitRef="pure">0.0096</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035915Member_BloombergUSGNMABondIndexMember"
      decimals="4"
      id="h_995_0f646b44_1527_4370_b969_ab3bdcace7cb"
      unitRef="pure">-0.0060</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035915Member_BloombergUSGNMABondIndexMember"
      decimals="4"
      id="h_996_98fc6005_8fa1_47c8_b788_dd615669a71a"
      unitRef="pure">0.0085</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000035915Member"
      id="t_1025_6933e7cf_f444_960d_9ea9_70f5a717d549">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000035915Member"
      id="t_1022_a9331fca_bf3f_554f_6c29_767389b1053d">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000035915Member"
      id="t_1023_fe05ffff_a272_dab4_a581_54fa5049fe1d">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000035915Member"
      id="t_1024_9c57e752_4c17_de2c_07f0_9ae02f2ad22f">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000023615Member"
      id="t_1015_3a84421a_8e1d_20a0_683a_71a0e1a9b1d5"> iSHARES&#xae; 1-3 YEAR INTERNATIONAL TREASURY BOND ETF  Ticker: ISHGStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000023615Member"
      id="t_400_248064f3_8c6f_4e9b_a8df_5706df1c8921">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000023615Member"
      id="t_401_8f5ce0a2_256f_410d_96bc_c80cc6492108"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares 1-3 Year International Treasury Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed market government bonds with remaining maturities between one and three years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000023615Member"
      id="t_402_ea9ecee6_216c_47ed_8631_31b2a084202e">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000023615Member"
      id="t_403_3169e063_1667_49b5_8d13_47529a849f92"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000023615Member"
      id="t_1021_91000710_d3c7_1bae_2add_28e8b8f9331d">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_997_33630f29_0e23_4c9c_82b3_f414e3249b25"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_998_98751220_29c5_418f_993a_2149a0c4c1e1"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_999_f5bffac0_65f9_4cba_9d1d_f4b4aeee7b84"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_1000_6c8eef35_0b87_4751_924e_9a59d36b05b8"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000023615Member"
      id="t_1018_fed11962_9bea_f97c_cdc1_c96ea698160b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000023615Member"
      id="t_1058_c87bac83_0dda_f313_2cd5_707343c22170">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000023615Member_C000069478Member"
      decimals="INF"
      id="h_1001_03b1705b_4c31_4b57_a3f5_3f590a6fa391"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000023615Member_C000069478Member"
      decimals="INF"
      id="h_1002_5038f686_1ba1_4a2d_8ad8_ae37e184af3f"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000023615Member_C000069478Member"
      decimals="INF"
      id="h_1003_801806f9_d8d9_4ab4_bb0c_8ea0acefbaac"
      unitRef="USD">197</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000023615Member_C000069478Member"
      decimals="INF"
      id="h_1004_a0128c73_c39d_4555_ac46_583076047046"
      unitRef="USD">443</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000023615Member"
      id="t_1016_ddddc6c6_e5c7_a458_fcb8_52f099a39d04">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000023615Member"
      id="t_1017_dd74b571_aac9_b889_2b5e_0f700bef7ee6">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 77% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000023615Member"
      decimals="4"
      id="h_1005_23b7647c_628d_441e_8efd_61ba2a5bc9a6"
      unitRef="pure">0.77</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000023615Member"
      id="t_405_ac312b2b_22af_416c_a758_6bdc6c48baaf"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000023615Member"
      id="t_406_fb4191d4_fec0_4142_bb36_883b307292b5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the FTSE World &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Government Bond Index &#x2013; Developed Markets 1-3 Years Capped &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Select Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of fixed-rate, local currency, investment-grade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign bonds from certain developed markets, and is a subset &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the FTSE World Government Bond Index &#x2013; Developed Markets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(WGBI-DM) Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). To be eligible for inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index, the issuing country must be classified by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the International Monetary Fund or by the World Bank as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed country, must meet market accessibility standards (as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determined by FTSE Fixed Income LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;FTSE&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), and must have a minimum market size greater than each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of USD 50 billion, EUR 40 billion and JPY 5 trillion. Market size is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defined as total outstanding market value of eligible securities. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the Underlying Index excludes the U.S. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The minimum credit rating for entry to the Underlying Index is A- &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Standard &amp;amp; Poor&#x2019;s Financial Services LLC (S&amp;amp;P) and A3 by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s Investors Service, Inc (Moody&#x2019;s). The Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;includes bonds having a remaining maturity greater than one year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and less than three years. The market value-based weights of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each individual country in the Underlying Index are capped at 21%. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Furthermore, the total market weights of the countries with more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 4.6% market weight in the index cannot exceed 47% of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;total index weight. Constituent securities of each country are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assigned weights in proportion to their market value. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is rebalanced on a monthly basis at month end. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, the Underlying Index was composed of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;161 components.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by FTSE, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000023615Member"
      id="t_1020_43fd2239_2b3d_9254_ac1d_5f15542000fc"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000023615Member"
      id="t_407_f2251442_ae1d_411e_ad1a_b0d9f46c3bd3"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000023615Member_RiskLoseMoneyMember"
      id="t_1033_d82902b2_cfb9_c278_c352_a17eb01a5af1">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_SovereignAndQuasiSovereignObligationsRiskMember"
      id="t_1034_04ead3d0_797f_cbbd_2cf9_70323da81246"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Sovereign and Quasi-Sovereign Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in securities issued by or guaranteed by non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign governments&#160;and by entities affiliated with or backed by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-U.S. sovereign governments, which may be unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to repay principal or interest when due. In times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic uncertainty, the prices of these securities may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatile than those of corporate debt obligations&#160;or of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government debt obligations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_InterestRateRisksMember"
      id="t_1035_48d3033c_ec5f_aa99_3b52_52c0842092d8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_RiskOfInvestingInDevelopedCountriesMember"
      id="t_1036_0e134d86_e6d4_c1bc_6c1f_6481a1b651b0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Developed Countries&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in&#160;&#160;developed country issuers will subject the Fund to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legal, regulatory, political, currency, security, economic and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks associated with developed countries. Developed countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to represent a significant portion of the global economy and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have generally experienced slower economic growth than some &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less developed countries. Certain developed countries have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experienced security concerns, such as war, terrorism and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Incidents involving a country&#x2019;s or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;region&#x2019;s security may cause uncertainty in its markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect its economy and the Fund&#x2019;s investments. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, developed countries may be adversely impacted by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes to the economic conditions of certain key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners, regulatory burdens, debt burdens and the price or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;availability of certain commodities.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_MarketRiskMember"
      id="t_1037_338401b4_7533_aee5_8b6c_f803bb4bfaeb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_IndexRelatedRiskMember"
      id="t_1038_6ef168ed_25f3_8554_cdc1_b5e44e16d360"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_AssetClassRiskMember"
      id="t_1045_127c2458_049c_552c_4006_c05911762bfa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1039_55ced6f5_d050_60b7_d36f_11e82c11ab32"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_CallRiskMember"
      id="t_1040_3bd000a5_daa2_2b82_3ce7_d6fdb7690d16"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_ConcentrationRiskMember"
      id="t_1041_f9c54f77_a3a8_8c39_65bc_de7562d5f916"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_CreditRisksMember"
      id="t_1042_cdbdeac0_06e8_5d1c_5030_5d43d5fd612d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_CurrencyRiskMember"
      id="t_1043_191ba648_e999_8275_d001_51378736cc67"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_CybersecurityRiskMember"
      id="t_1044_caaf27c4_c2dc_0d15_adc2_b5cd0b100068"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_IlliquidInvestmentsRiskMember"
      id="t_1046_07db1c72_c98e_4d6f_e9ea_bfa9413209fb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_IncomeRiskMember"
      id="t_1047_6e9dd905_dc2e_ef3b_012f_a6029b17568e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_ManagementRiskMember"
      id="t_1050_cb633583_f43f_ed46_0896_e9677a4d68d1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA and the Sub-Adviser may not produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the intended results. There is no guarantee that the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results will have a high degree of correlation to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index or that the Fund will achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_MarketTradingRiskMember"
      id="t_1051_7be2e78f_1e16_5bcd_8f48_0967b07926e6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_NationalClosedMarketTradingRiskMember"
      id="t_1054_f161d853_974f_3012_fa11_8aa14c20212b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_RiskNondiversifiedStatusMember"
      id="t_1048_48c99774_23f7_a295_e1d9_8cf159e47795"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_NonUSSecuritiesRiskMember"
      id="t_1049_856379c9_7510_0fce_75fa_2d2e7fbad538"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;European Economic Risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_OperationalRiskMember"
      id="t_1052_5f1a1456_7f6c_9bf8_dd55_46bcdd20af8d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_RelianceOnTradingPartnersRiskMember"
      id="t_1053_e45f6c82_5e01_c737_78f0_d8a653fce997"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_TrackingErrorRiskMember"
      id="t_1055_93333291_5bad_9457_c898_c9ba3de29d3e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023615Member_ValuationRiskMember"
      id="t_1056_2c8f5c7a_cd13_e187_d5a0_2b27da4fdb9f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000023615Member"
      id="t_408_b6d0f9c9_d82a_4b6d_9d69_9e5731204eb5"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000023615Member"
      id="t_1022_d4798c74_c757_138c_f4ff_357ecc25289a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000023615Member"
      id="t_1023_2db642c1_ee41_f14b_05bf_97fdab8d0e8a">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000023615Member"
      id="t_1026_9770805b_40de_cebe_0a71_71658f0a096b">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000023615Member"
      id="t_1025_a7ac6dfe_5810_ed8e_9dbf_c227dc628233">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000023615Member"
      id="t_1024_e22cd29d_ee62_397b_7227_712f3433cec3">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000023615Member"
      id="t_1027_3666a073_42cc_6b89_5019_9f1d9c57e48d"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000023615Member"
      id="t_1028_1180dfb5_17ef_63f0_69e0_b625b57fb5de"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.38pt;"&gt;7.95%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-7.72%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000023615Member_C000069478Member"
      id="h_1009_d14686d7_5a4b_4185_b5ee_a67b5f5f9bc4">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_1010_9672d01a_382a_4075_967c_1cfffdbb67c6"
      unitRef="pure">0.0795</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000023615Member_C000069478Member"
      id="h_1011_3e25c03a_d45c_44c2_bcbb_fe0e901bd29e">2022-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000023615Member_C000069478Member"
      id="h_1012_c52c2b18_7c29_4f49_9fbb_b338c7618d3e">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_1013_74569470_d2e9_4f04_b187_60886befd339"
      unitRef="pure">-0.0772</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000023615Member_C000069478Member"
      id="h_1014_4939ba62_5ae5_454a_af11_7291db29a943">2022-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000023615Member"
      id="t_410_8b9b6e75_19ad_43cc_bc24_75b263c1410b">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000023615Member_C000069478Member"
      id="t_1057_4e8f9cbc_a07c_0471_1ab9_8d9fbb081354">2009-01-21</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_1015_a772b475_1611_4185_ad8d_9459d0fdd4ba"
      unitRef="pure">-0.0412</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_1016_1e22db34_4055_4989_8e3b_6bad533b2814"
      unitRef="pure">-0.0245</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023615Member_C000069478Member"
      decimals="4"
      id="h_1017_e12ae6ce_2f2a_4055_817d_e82d93f82365"
      unitRef="pure">-0.0159</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023615Member_C000069478Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1018_53c02623_a6ec_42ab_b5a4_9f50bc4b2ba5"
      unitRef="pure">-0.0509</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023615Member_C000069478Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1019_ef2caefa_ec95_4057_87f3_dd89818e2d14"
      unitRef="pure">-0.0277</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023615Member_C000069478Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1020_57da860a_2098_45e0_b560_82389b490a1b"
      unitRef="pure">-0.0184</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023615Member_C000069478Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1021_32934dd5_2289_4841_8619_af1d98534ed2"
      unitRef="pure">-0.0244</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023615Member_C000069478Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1022_e29da0cf_c9cd_4638_bd8a_68a40838ff82"
      unitRef="pure">-0.0197</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023615Member_C000069478Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1023_68fb5906_1dcd_4031_8443_d604d5ee71db"
      unitRef="pure">-0.0129</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023615Member_FTSEWorldBroadInvestmentGradeBondIndexMember"
      decimals="4"
      id="h_1024_80d576c5_7ac4_4642_a9ee_7b9377580c84"
      unitRef="pure">-0.0148</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023615Member_FTSEWorldBroadInvestmentGradeBondIndexMember"
      decimals="4"
      id="h_1025_2fd6b406_455c_4b82_8848_225000796e9a"
      unitRef="pure">-0.0209</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023615Member_FTSEWorldBroadInvestmentGradeBondIndexMember"
      decimals="4"
      id="h_1026_99ffaee1_0d0d_4621_aa98_6053007261de"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023615Member_FTSEWorldGovernmentBondIndexDevelopedMarketsCappedSelectIndexMember"
      decimals="4"
      id="h_1027_6e0c92df_50e9_41b7_a388_f706e6a35f99"
      unitRef="pure">-0.0388</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023615Member_FTSEWorldGovernmentBondIndexDevelopedMarketsCappedSelectIndexMember"
      decimals="4"
      id="h_1028_d7cc0563_7508_4a32_9d84_0e6bf206cb9e"
      unitRef="pure">-0.0212</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023615Member_FTSEWorldGovernmentBondIndexDevelopedMarketsCappedSelectIndexMember"
      decimals="4"
      id="h_1029_3df1ccf8_0f1c_4a51_96d2_0acbfae4e6f5"
      unitRef="pure">-0.0135</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000023615Member"
      id="t_1029_ea28a88d_2f65_2cf8_ae8e_2775063ed686"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000023615Member"
      id="t_1030_d1ec05b4_ed51_c6b4_484a_466a29f6a362">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000023615Member"
      id="t_1031_4d61ed78_5bbd_11fa_4648_c015cca845bb">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000023615Member"
      id="t_1032_e4cdf6fd_b7da_deb6_7ba2_4258f00ffe76">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000038926Member"
      id="t_1051_f0c060d7_e183_e74d_4c6f_6961c9771cf1"> iSHARES&#xae; CORE 1-5 YEAR USD BOND ETF  Ticker: ISTBStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000038926Member"
      id="t_411_793ab66b_4c71_4610_a2b5_e9c93d0a9081">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000038926Member"
      id="t_412_8108280e_895d_4d92_9c4f_2a878f174f02"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Core 1-5 Year USD Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds that are rated either investment-grade or high yield with remaining maturities between one and five years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000038926Member"
      id="t_413_d77f79cc_486f_4969_86fc_1f47dddf96de">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000038926Member"
      id="t_414_2b897d2a_ad72_41fe_a801_0790d7484bb6"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other registered investment companies advised by BFA, or its affiliates, through February 28, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2029. The contractual waiver may be terminated prior to February 28, 2029 only upon written agreement of the Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000038926Member"
      id="t_1093_3be21c56_0cb1_ab2b_4000_44c08df7aefd">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000038926Member"
      id="t_1101_4b931847_fd8f_df4d_c705_51a75d7448a8">February 28, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000038926Member"
      id="t_1063_97346fe0_0074_4613_a8ed_9bf1bed76624">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1030_c71ac492_e7ad_4a07_8763_67b420ca10a0"
      unitRef="pure">0.0006</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1031_c3cdc5d8_25d2_4233_bfde_a965620faa11"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1032_d575b53d_e791_4f09_9666_949067b7b5a5"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1033_bd6cbe55_9422_438a_9796_3fd6ff79a18b"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1034_8307e2bf_3b00_4bf1_91c0_e0640df49081"
      unitRef="pure">0.0006</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1035_5a5476d3_78d9_408a_8c7f_5342b0e24939"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1036_188efd00_54d5_450f_9af2_463394e285e3"
      unitRef="pure">0.0006</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000038926Member"
      id="t_1053_82387d7e_44e0_34ac_412e_4895b3fce69f">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000038926Member"
      id="t_1054_a1fcc368_dec1_3d7b_9e7a_cc932d5d6671">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000038926Member_C000119711Member"
      decimals="INF"
      id="h_1037_f7d864e7_8477_42a1_9e6f_be5302b3a2d3"
      unitRef="USD">6</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000038926Member_C000119711Member"
      decimals="INF"
      id="h_1038_9f56371b_6fa7_4cf2_a5f7_277645189edc"
      unitRef="USD">19</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000038926Member_C000119711Member"
      decimals="INF"
      id="h_1039_12169122_ad91_4826_bb3c_05aeb4bf6c93"
      unitRef="USD">34</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000038926Member_C000119711Member"
      decimals="INF"
      id="h_1040_61dcd23f_4df5_44ba_bd40_50a61b285a54"
      unitRef="USD">77</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000038926Member"
      id="t_1055_bbe082e3_392f_f15e_21b6_3b3b7d0d8355">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000038926Member"
      id="t_1056_a8dad3b0_11a4_1db1_54c2_ed84e73bd27d">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 39% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000038926Member"
      decimals="4"
      id="h_1041_a80bd6a6_24a4_48e3_8b1a_1e006d1c01fc"
      unitRef="pure">0.39</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000038926Member"
      id="t_416_94ea169e_d3af_4b77_ad80_d00a6a0067db"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000038926Member"
      id="t_417_db01cbd8_0e8c_4451_b729_f43c1959e618"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Universal 1-5 Year Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures the performance of U.S. dollar-denominated taxable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds that are rated either investment-grade or high yield (as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determined by Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) with remaining effective maturities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;between one and five years. The Underlying Index includes U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bonds, government-related bonds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, sovereign, quasi-sovereign, supranational and local &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;authority debt), investment-grade and high yield U.S. corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, mortgage-backed pass-through securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MBS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial mortgage-backed securities, asset-backed securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ABS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), Eurodollar bonds, bonds registered with the SEC or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from registration at the time of issuance, or offered &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pursuant to Rule 144A with or without registration rights (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Rule &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;144A Bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and U.S. dollar-denominated emerging market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds. The Underlying Index is a subset of the Bloomberg U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Universal Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, a significant portion of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is represented by U.S. Treasury securities. The components &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index are likely to change over time. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and non-convertible. Excluded from the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are tax-exempt municipal securities, coupon issues that have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;been stripped from bonds, structured notes, private placements &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(excluding Rule 144A Bonds) and bonds denominated in euros. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Most transactions in fixed-rate mortgage-backed pass-through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities occur through standardized contracts for future delivery &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in which the exact mortgage pools to be delivered are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;specified until a few days prior to settlement (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to-be-announced &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(TBA) transactions&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Fund may enter into such contracts on a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regular basis. The Fund, pending settlement of such contracts, will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest its assets in high-quality, liquid short-term instruments, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including shares of money market funds advised by BFA or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates. The Fund will assume its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses of any money market fund that it may invest in, in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition to the Fund's own fees and expenses. The Fund may also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;acquire interests in mortgage pools through means other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such standardized contracts for future delivery. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market capitalization-weighted and is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced on the last day of the month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index and TBA transactions that have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic characteristics that are substantially identical to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic characteristics of the component securities of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and the Fund will invest at least 90% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in fixed income securities of the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a TBA position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for purposes of calculating investments in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index. Cash and cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments associated with a derivative position will be treated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as part of that position for the purposes of calculating the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of investments included in the Underlying Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000038926Member"
      id="t_1094_94d81630_f000_c25d_3a98_5c1c78e2aa8c"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000038926Member"
      id="t_418_11df11a0_6800_4bc9_af78_5f266ad545be"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000038926Member_RiskLoseMoneyMember"
      id="t_1064_b0035454_9d6d_f595_5a15_0574c8f037ae">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_CreditRisksMember"
      id="t_1065_46c1eba0_ea95_4fa5_150c_40c33be8c4ad"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_InterestRateRisksMember"
      id="t_1066_54775cf7_c9e9_5c6d_86f7_e2aa7319afc4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_HighYieldSecuritiesRiskMember"
      id="t_1067_8d33a6b7_11eb_c9d8_692d_7e49422a735a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_MarketRiskMember"
      id="t_1068_dbe04558_075a_53a8_43fc_c164670928dc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_IndexRelatedRiskMember"
      id="t_1069_271bc140_4cc3_f971_2b40_8ae0a2c8b745"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_AssetClassRiskMember"
      id="t_1070_585e6d3e_0a08_76a2_3830_0854e490f9ff"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1071_92e933d3_caa1_2ed5_4a09_edb8501fd6ee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_CallRiskMember"
      id="t_1072_4cae1700_823c_2b81_ec68_93a2f96ace09"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_ConcentrationRiskMember"
      id="t_1073_228613d7_3497_3a25_ff8c_09013efcdf85"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_CybersecurityRiskMember"
      id="t_1074_96a6d774_0d33_edf7_7cb7_537cdbb78d76"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_ExtensionRiskMember"
      id="t_1075_403c612a_83b9_1c75_55d0_28afa3c492df"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s income and potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the value of the Fund&#x2019;s investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_IlliquidInvestmentsRiskMember"
      id="t_1076_704b145b_ff49_795e_d2b5_1640282f006d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_IncomeRiskMember"
      id="t_1077_a8d28546_15b8_c4ed_9fd4_9fab75ffdc37"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_IssuerRiskMember"
      id="t_1078_4de814d4_68e1_948f_c822_b2d6a3371314"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1079_4db355f9_22a9_2464_498f_66ee9523da93"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_ManagementRiskMember"
      id="t_1080_92fc673e_78ae_0fc8_9e21_9a32a4164cd2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_MarketTradingRiskMember"
      id="t_1081_ac07b9f7_7bbe_74ff_c060_5f18e97ff79f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_OperationalRiskMember"
      id="t_1082_e1b9cca4_acbb_b212_c7c3_fa1b5a8c5e5d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_PrepaymentRisksMember"
      id="t_1083_2d011768_ba00_00bf_59e4_d5d489bb6470"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Prepayment Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During periods of falling interest rates, issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of certain debt obligations may repay principal prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security&#x2019;s maturity, which may cause the Fund to have to reinvest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in securities with lower yields or higher risk of default, resulting in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a decline in the Fund&#x2019;s income or return potential.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_1084_f8c55f9b_aa8b_5439_06af_0ec87ffaf234"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_RelianceOnTradingPartnersRiskMember"
      id="t_1085_1611aaea_7f4c_e3f2_3b4b_b3dbd9c19e1a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_RiskOfInvestingInChinaMember"
      id="t_1102_f1fd2eae_45d6_999b_82a3_b9efbc193e80">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1103_217f0798_15d3_dd75_226a_b64b0d86ecc2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_RiskOfInvestingInSaudiArabiaMember"
      id="t_1104_8c5ecda0_97e8_26d3_9dcc_671013e913ad">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Saudi Arabia&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers subjects the Fund to legal, regulatory, political, currency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, and economic risks that are specific to Saudi Arabia. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economy of Saudi Arabia is dominated by petroleum exports. A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sustained decrease in petroleum prices could have a negative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on all aspects of the economy. Investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of Saudi Arabian issuers involve risks not typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with investments in securities of issuers in more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries, which may negatively affect the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s investments. Such heightened risks may include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, the expropriation and/or nationalization of assets, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on and government intervention in international trade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;confiscatory taxation, political instability, including authoritarian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or military involvement in governmental decision-making, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;armed conflict, crime and instability as a result of religious, ethnic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or socioeconomic unrest. Instability in the Middle East region &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could adversely impact the economy of Saudi Arabia, and there is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no assurance of political stability in Saudi Arabia.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The ability of foreign investors to invest in the securities of Saudi &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arabian companies could be restricted by the Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government at any time, and unforeseen risks could materialize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to foreign ownership of such securities. There are a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;number of ways to conduct transactions in equity securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Saudi Arabian market. The Fund generally expects to transact in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;manner so that it is not limited by Saudi Arabian regulations to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;single broker. However, there may be a limited number of brokers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;who can provide services to the Fund, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the prices, quantity or timing of Fund transactions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_RiskOfInvestingInTheUSMember"
      id="t_1105_9e68984b_1714_c26a_b2f6_6f363c7069d6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_SecuritiesLendingRiskMember"
      id="t_1106_325b8ddb_5188_2227_3380_67586212bbd7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_TrackingErrorRiskMember"
      id="t_1107_a8782256_216d_ac9e_65b6_086997d6d960">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_USTreasuryObligationsRiskMember"
      id="t_1108_3782b195_b316_a256_df67_5da33c054a1a">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000038926Member_ValuationRiskMember"
      id="t_1109_254d0803_49a4_5e05_1dd7_659e6f0d5ba6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000038926Member"
      id="t_419_68f7edea_a6b1_4f9d_9432_78d2a9386a1b"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000038926Member"
      id="t_1059_4ffda031_f7fa_e18c_c0cf_04890747cbbb"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000038926Member"
      id="t_1057_475db9cc_1d9a_6047_a15e_240dce6a2bec">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000038926Member"
      id="t_1058_3e8376fe_1b33_3890_29df_9a01dafcd65a">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000038926Member"
      id="t_1060_e9c8994d_9f6e_3689_d962_a837b4c761aa">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000038926Member"
      id="t_1061_65d1b363_d0ef_2e32_9804_dbfc2a6ebe7b">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000038926Member"
      id="t_1062_87d532ca_2b1e_b059_9506_891026d116ee"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000038926Member"
      id="t_1099_517b6f65_d369_4ca0_1581_fe57bad1cf25"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.5pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.5pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.88pt;"&gt;3.68%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.5pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.5pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-3.71%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000038926Member_C000119711Member"
      id="h_1045_c3ce6e08_1b87_4883_9881_0d9558876867">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1046_a119eec6_956c_49c0_b061_c38f54adbd74"
      unitRef="pure">0.0368</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000038926Member_C000119711Member"
      id="h_1047_cb8a20cc_ab5e_4ec2_b365_884f63904766">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000038926Member_C000119711Member"
      id="h_1048_c34b676c_82ec_488b_9189_e47bf7d9eecc">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1049_dc8304a1_c7a4_4599_ab14_d8f57d05e654"
      unitRef="pure">-0.0371</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000038926Member_C000119711Member"
      id="h_1050_fc50ed61_4e9b_4863_a900_c9b665cdb8ec">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000038926Member"
      id="t_421_836dd7bc_867a_49c9_8e1d_61567d43bb8f">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000038926Member_C000119711Member"
      id="t_1098_b29512c1_aa4f_158a_c26e_658707b52bc1">2012-10-18</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1051_052a6342_3d88_442a_8b58_48f00393e212"
      unitRef="pure">0.0435</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1052_168ed8f5_b7b3_412d_b39f_f5f1d274ff59"
      unitRef="pure">0.0149</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000038926Member_C000119711Member"
      decimals="4"
      id="h_1053_2f5944f6_d6b4_46a2_a62b_604674839734"
      unitRef="pure">0.0194</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000038926Member_C000119711Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1054_818c44ac_0d96_464c_8cf4_62dbfa470b54"
      unitRef="pure">0.0273</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000038926Member_C000119711Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1055_bde68480_98a4_4ba3_8e5f_a93954fb70f5"
      unitRef="pure">0.0045</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000038926Member_C000119711Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1056_cae82ac3_5404_42fe_af57_01bae723acbd"
      unitRef="pure">0.0095</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000038926Member_C000119711Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1057_8c051acb_c5ef_4c3d_a170_a9e23b059e27"
      unitRef="pure">0.0256</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000038926Member_C000119711Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1058_1fd2c623_1bc5_4b40_ae28_1212f95fcd28"
      unitRef="pure">0.0069</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000038926Member_C000119711Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1059_8d6732ca_faa4_4552_82e8_9d033d8eaa17"
      unitRef="pure">0.0105</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000038926Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1060_388cb0a9_fa7e_46ec_8850_b639ca221523"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000038926Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1061_048cadc3_9d8a_4402_8e28_45f1afb98af0"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000038926Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1062_e6a90d7d_df63_4f39_b0d0_f6d27f4a2481"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000038926Member_BloombergUSUniversal15YearIndexMember"
      decimals="4"
      id="h_1063_b7867bdb_da0f_4785_b68b_2aec3407b119"
      unitRef="pure">0.0435</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000038926Member_BloombergUSUniversal15YearIndexMember"
      decimals="4"
      id="h_1064_6b6e4da2_f172_471e_9571_a641526fcf49"
      unitRef="pure">0.0152</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000038926Member_BloombergUSUniversal15YearIndexMember"
      decimals="4"
      id="h_1065_485e6883_d0f7_4442_b96c_48fd73141442"
      unitRef="pure">0.0199</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000038926Member"
      id="t_1100_e7496b2a_c725_e4f4_9f80_17ececd6f92b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000038926Member"
      id="t_1095_57b84bda_1cbc_3864_22cf_c5fe1553f8dc">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000038926Member"
      id="t_1096_534dad7f_cf15_570c_3fb6_8f07251c6e8a">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000038926Member"
      id="t_1097_1c752fd5_31c1_7faa_10fe_a81acae27851">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000051261Member"
      id="t_1084_111dd74d_4523_abdb_2a6e_bce969153152"> iSHARES&#xae; CORE INTERNATIONAL AGGREGATE BOND ETF  Ticker: IAGGStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000051261Member"
      id="t_422_22321c34_213d_497f_b79b_a2b9bfbb2254">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000051261Member"
      id="t_423_651cfb72_c036_4751_9094_084102f28476"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Core International Aggregate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of global non-U.S.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; dollar-denominated investment-grade bonds that mitigates exposure to fluctuations between the value of the component currencies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the U.S. dollar.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000051261Member"
      id="t_424_807e6bc1_949e_4009_b70d_3539806965eb">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000051261Member"
      id="t_425_38a880cb_ad70_4311_b629_5425af137fbe"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000051261Member"
      id="t_1085_be23027e_0249_8161_2f52_d64cb0821d50">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1066_78654c65_6dd2_4790_99fd_8cbc9581631d"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1067_60148f49_277a_41b8_9daf_060810dbca1e"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1068_09d8f72f_74f2_47c6_a9d0_b9ddce295743"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1069_2c5616fd_5e35_44e4_882b_dc1d348cdba0"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000051261Member"
      id="t_1086_169a9806_a8a4_60c3_0072_2c6c448306a3">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000051261Member"
      id="t_1087_8e3ecbbf_5470_5d25_2f4b_394e92c7cbee"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000051261Member_C000161648Member"
      decimals="INF"
      id="h_1070_a9a4b5c1_5216_411a_8606_1b64b2c86bf9"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000051261Member_C000161648Member"
      decimals="INF"
      id="h_1071_a62008a1_46b3_4352_8df3_1f8fafa68f32"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000051261Member_C000161648Member"
      decimals="INF"
      id="h_1072_9268caf7_1c82_4ac2_95b6_ac7057eb8bfd"
      unitRef="USD">40</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000051261Member_C000161648Member"
      decimals="INF"
      id="h_1073_50cbc237_bb96_405b_84da_b64edfc67769"
      unitRef="USD">90</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000051261Member"
      id="t_1088_34d67189_ac35_9105_5b94_87c06e603de2">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000051261Member"
      id="t_1089_abad01ff_3cac_c6a3_e601_1c417831b35a">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 20% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000051261Member"
      decimals="4"
      id="h_1074_89af630c_0d7c_47a1_ab7b_a11bb2e08604"
      unitRef="pure">0.20</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000051261Member"
      id="t_427_6a24489a_a49f_490b_8c46_fac950a960c9"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000051261Member"
      id="t_428_103ddf6a_b297_4028_90d2_a2d448eb3b3e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Aggregate ex USD 10% Issuer Capped (Hedged) Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the performance of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;global investment-grade (as determined by Bloomberg Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market. As of October 31, 2024, there were 13,493 issues in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes investment-grade fixed-rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign and government-related debt, corporate and securitized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds from both developed and emerging market issuers. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities included in the Underlying Index are issued in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies other than the U.S. dollar, must have maturities of at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least one year and are required to meet minimum outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issue size criteria. The Underlying Index is market capitalization-weighted&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; with a cap on each issuer of 10%. Debt that is publicly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued in the global and regional markets is included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Certain types of securities, such as USD-denominated&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds, contingent capital securities, inflation-linked &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, floating-rate issues, fixed-rate perpetuals, retail bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;structured notes, pass-through certificates, private placements &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(other than those offered pursuant to Rule 144A or Regulation S &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;promulgated under the Securities Act of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) and securities where reliable pricing is unavailable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are excluded from the Underlying Index. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business day of each month, and the currency risk of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index is hedged to the U.S. dollar on a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;monthly basis. As of October 31, 2024, a significant portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is represented by non-U.S. government-related &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds and Treasury securities. The components of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index was comprised of securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;governments in 61 countries or regions as well as securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued or guaranteed by supranational entities as of October 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2024.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The CFTC has adopted certain requirements that subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered investment companies and their advisers to regulation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the CFTC if a registered investment company invests more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than a prescribed level of its net asset value in CFTC-regulated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures, options and swaps, or if a registered investment company &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets itself as providing investment exposure to such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments. Due to the Fund&#x2019;s potential use of CFTC-regulated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures, options and swaps above the prescribed levels, it is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity pool&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; and BFA is considered a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity pool operator&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; with respect to the Fund under the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Commodity Exchange Act (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CEA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&#160;BFA is subject to regulation by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the CFTC and the National Futures Association (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments comprising an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities selected are expected to have, in the aggregate, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment characteristics (based on factors such as market value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and industry weightings), fundamental characteristics (such as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change in interest rates), maturity or credit ratings and yield) and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidity measures similar to those of an applicable underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index. The Fund may or may not hold all of the securities and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other components of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. Components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index include fixed-income securities and foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency forward contracts (both deliverable and non-deliverable) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to hedge non-U.S. currency fluctuations against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar. The notional exposure to foreign currency forward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts (both deliverable and non-deliverable) generally will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a short position that hedges the currency risk of the fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio. The Fund seeks to track the investment results of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index sells forward the total value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying non-U.S. dollar currencies at a one-month forward rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to hedge against fluctuations in the relative value of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar component currencies in relation to the U.S. dollar. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedge is reset on a monthly basis. The Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to have higher returns than an equivalent unhedged &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment when the non-U.S. dollar component currencies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weakening relative to the U.S. dollar and appreciation in some of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the non-U.S. dollar component currencies does not exceed the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate depreciation of the others.&#160;&#160;Conversely, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is designed to have lower returns than an equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unhedged investment when the non-U.S. dollar component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies, on a net basis, are rising relative to the U.S. dollar.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In order to track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedging&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; component of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, the Fund enters into foreign currency forward contracts &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to offset the Fund&#x2019;s exposure to the non-U.S. dollar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component currencies. A foreign currency forward contract is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contract between two parties to buy or sell a specified amount of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a specific currency in the future at an agreed-upon exchange rate. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's exposure to foreign currency forward contracts is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on the aggregate exposure of the Fund to the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar component currencies. While this approach is designed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimize the impact of currency fluctuations on Fund returns, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not necessarily eliminate the Fund&#x2019;s exposure to the non-U.S.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; dollar component currencies. The return of the foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency forward contracts may not perfectly offset the actual &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in value between the non-U.S. dollar component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies and the U.S. dollar.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may also use non-deliverable forward (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NDF&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) contracts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to execute its hedging transactions. An NDF contract is a contract &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;where there is no physical settlement of two currencies at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity. Rather, based on the movement of the currencies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the contractually agreed upon exchange rate, a net cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;settlement will be made by one party to the other in U.S. dollars.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000051261Member"
      id="t_1090_4cfdc970_16fd_bfaf_e4a6_ec1999b6b853"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000051261Member"
      id="t_429_24df0927_204c_4d5d_b1ff_245dc5c5c18d"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskLoseMoneyMember"
      id="t_1141_fa6df764_d910_f666_bc15_afe72e063a95">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_InterestRateRisksMember"
      id="t_1103_46a39fba_34eb_f942_125d_257f4d84e776"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_CreditRisksMember"
      id="t_1104_9805058c_a5cf_00d7_02ac_87ff5b436980"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_NonUSSecuritiesRiskMember"
      id="t_1105_302abc70_1fdf_1b45_3cba_278828efea1e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;&#160;European Economic Risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_MarketRiskMember"
      id="t_1106_2c1da485_1052_ab60_3d51_13bc38345bbe"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_IndexRelatedRiskMember"
      id="t_1107_5b0aca1f_0c50_c4a2_1049_2a616b0e942c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_AssetClassRiskMember"
      id="t_1108_1a9e2ed5_f9d3_095a_5fc5_4e0127c2ed71"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1109_268abeb8_888c_dcfc_15cc_de664ff238f7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000051261Member_CallRiskMember"
      id="t_1110_b9a58bba_ea1a_dc5c_d867_e477636a9e05"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000051261Member_CommodityRegulatoryRiskMember"
      id="t_1111_3bd75a3d_633b_1bdd_cb36_837664010756"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commodity Regulatory Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The regulatory requirements &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;governing the use of commodity futures, options&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on commodity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures, certain swaps or certain other investments could change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at any time.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000051261Member_CommodityRiskMember"
      id="t_1112_5e35af3d_a837_6062_457d_0e0e3bb44a62"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commodity Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in companies that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;susceptible to fluctuations in certain commodity markets and to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price changes due to trade relations. Any negative changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity markets that may be due to changes in supply and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand for commodities, market events, war, regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, other catastrophic events, or other factors that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund cannot control could have an adverse impact on those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000051261Member_ConcentrationRiskMember"
      id="t_1113_2af28a8e_a3f3_b9a2_de76_19ba4261db2a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_CurrencyHedgingRiskMember"
      id="t_1114_081dab31_caa7_0f0a_6d1c_b0ef8ca9ac99"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Hedging Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; In seeking to track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedging&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component of the Underlying Index, the Fund invests in currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forward contracts (which may include both physically-settled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forward contracts and NDFs) designed to hedge the currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure of non-U.S. dollar denominated securities held in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio. While hedging can reduce or eliminate losses, it can also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduce or eliminate gains. Hedges are sometimes subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imperfect matching between the derivative and its reference &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset, and there can be no assurance that the Fund&#x2019;s hedging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions will be effective.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Exchange rates may be volatile and may change quickly and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unpredictably in response to both global economic developments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and economic conditions in a geographic region in which the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests. In addition, in order to minimize transaction costs, or for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other reasons, the Fund&#x2019;s exposure to the non-U.S. dollar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component currencies may not be fully hedged&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;at all times. At &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain times, the Fund may use an optimized hedging strategy &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and will hedge a smaller number of non-U.S. dollar component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currencies to reduce hedging costs. Because currency forwards &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are over-the-counter instruments, the Fund is subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty risk as well as market or liquidity risk with respect to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the hedging transactions the Fund enters into.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The effectiveness of the Fund&#x2019;s currency hedging strategy will in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;general be affected by the volatility of both the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the volatility of the U.S. dollar relative to the currencies to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedged, measured on an aggregate basis. Increased volatility in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;either or both of the Underlying Index and the U.S. dollar relative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the currencies to be hedged will generally reduce the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectiveness of the Fund&#x2019;s currency hedging strategy. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility in one or more of the currencies may offset stability in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;another currency and reduce the overall effectiveness of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedges. The effectiveness of the Fund&#x2019;s currency hedging strategy &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may also in general be affected by interest rates. Significant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differences between U.S. dollar interest rates and&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;some or all of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the applicable foreign currency interest rates may impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectiveness of the Fund&#x2019;s currency hedging strategy.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000051261Member_CurrencyRiskMember"
      id="t_1115_ebc4992a_f882_68a7_9fb7_d96afd2aa933"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000051261Member_CustodyRiskMember"
      id="t_1116_4146e551_573d_a213_2634_fb2b91b3c5a8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Custody Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Less developed securities markets are more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience problems with the clearing and settlement of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trades, as well as the custody of securities and other assets by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;local banks, agents and depositories. These issues may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund, including losses or delays in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments, delivery or recovery of money or other assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_CybersecurityRiskMember"
      id="t_1117_7796afdf_a003_eb3e_2309_2ae5c4e411ff"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt; &lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_DerivativesRisksMember"
      id="t_1118_19c827c3_fcf5_f33d_2f63_dba98aa90bfb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s use of derivatives (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., futures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forwards, swaps, options) may be riskier than other types of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments and may not have the intended effect on the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. Derivatives can be sensitive to changes in economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and market conditions, and they may increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility. The Fund also may experience reduced returns as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of transaction costs and losses on derivatives positions. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is the risk of imperfect correlation between the value of a &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative and that of the asset underlying the derivative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives may create investment leverage, which could result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;losses that significantly exceed the Fund&#x2019;s original investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives are subject to the risk of mispricing or improper &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation, particularly if there is not a liquid secondary market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the instrument. Certain derivatives are subject to counterparty &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk, which is the risk that the other party in the transaction will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not fulfill its contractual obligations. The use of derivatives also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposes the Fund to additional operational and legal risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_ExtensionRiskMember"
      id="t_1119_2390f5b2_238e_0d62_0945_d7d201b722ba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s income and potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the value of the Fund&#x2019;s investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_IlliquidInvestmentsRiskMember"
      id="t_1120_2980e3fb_264c_40bc_d715_1b438cc575bb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_IncomeRiskMember"
      id="t_1121_c02ed13d_6fc0_4112_b508_ec3e329e633f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_IssuerRiskMember"
      id="t_1122_55ab5a11_7624_6338_d81c_576a0e16ac41"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_ManagementRiskMember"
      id="t_1123_6975e404_9466_fde4_0e13_808dd0d762b6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA and the Sub-Advisers may not produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the intended results. There is no guarantee that the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results will have a high degree of correlation to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index or that the Fund will achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_MarketTradingRiskMember"
      id="t_1124_d33bffcb_de55_7c7b_a03e_796863c0bd93"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_NationalClosedMarketTradingRiskMember"
      id="t_1125_d76d6a73_d940_8a2b_b571_47f9cc1efbc9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskNondiversifiedStatusMember"
      id="t_1126_6a40280e_2446_8cab_f288_4f64c8fa7715"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_OperationalRiskMember"
      id="t_1127_b04fc593_0fce_3f3c_7bfe_9925b9086cfb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_1128_f5685c1b_e788_f416_78a0_5f96f66db18b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RelianceOnTradingPartnersRiskMember"
      id="t_1129_1ba281f9_f75f_e28b_48ec_ae16075336a5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments. Through its holdings of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of certain issuers, the Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;European Economic Risk and North &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;American Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskOfInvestingInChinaMember"
      id="t_1130_98ba013f_2247_66b0_e03c_52d6d09fa5d5"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1131_1025e209_e9ed_ede2_aef3_c4c3d56939da"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskOfInvestingInDevelopedCountriesMember"
      id="t_1132_81dd62b0_53bf_d580_6804_0f2dd3b282b0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Developed Countries&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in&#160;&#160;developed country issuers will subject the Fund to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legal, regulatory, political, currency, security, economic and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks associated with developed countries. Developed countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to represent a significant portion of the global economy and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have generally experienced slower economic growth than some &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less developed countries. Certain developed countries have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experienced security concerns, such as war, terrorism and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Incidents involving a country&#x2019;s or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;region&#x2019;s security may cause uncertainty in its markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect its economy and the Fund&#x2019;s investments. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, developed countries may be adversely impacted by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes to the economic conditions of certain key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners, regulatory burdens, debt burdens and the price or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;availability of certain commodities.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskOfInvestingInEmergingMarketsMember"
      id="t_1133_efc738ba_54e7_e801_c12f_ee9e3bb8aca5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Emerging Markets&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investments in emerging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market issuers may be subject to a greater risk of loss than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments in issuers located or operating in more developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets. Emerging markets may be more likely to experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation, social instability, political turmoil or rapid changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic conditions than more developed markets. Companies in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;many emerging markets are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries, and as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result, information about the securities&#160;in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Emerging markets often have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less reliable securities valuations and greater risk associated with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;custody of securities than developed markets. There may be &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant obstacles to obtaining information necessary for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investigations into or litigation against companies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders may have limited legal remedies. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;select investments based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskOfInvestingInRussiaMember"
      id="t_1134_f69585a7_b92e_d843_aad8_e81b076a5744"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Russia. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investing in Russian securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves significant risks, including legal, regulatory, currency and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to Russia. In addition, investing in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Russian securities involves risks associated with the settlement of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio transactions and loss of the Fund&#x2019;s ownership rights in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;its portfolio securities as a result of the system of share &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registration and custody in Russia. Governments, including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., the U.K., the E.U., and many other countries have imposed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic sanctions on certain Russian individuals and Russian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate and banking entities, and jurisdictions may also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;institute broader sanctions on Russia. Russia has issued a number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of countersanctions, some of which restrict the distribution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;profits by limited liability companies (e.g., dividends), and prohibit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Russian persons from entering into transactions with designated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;persons from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unfriendly states&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; as well as the export of raw &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;materials or other products from Russia to certain sanctioned &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;persons.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Russia launched a large-scale invasion of Ukraine on February 24, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2022. The extent and duration of the military action, resulting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sanctions and resulting future market disruptions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declines in its stock markets and the value of the ruble against the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollar, are impossible to predict, but could be significant. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Disruptions caused by Russian military action or other actions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including cyberattacks and espionage) or resulting actual and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;threatened responses to such activity, including purchasing and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financing restrictions, boycotts or changes in consumer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchaser preferences, sanctions, import and export restrictions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tariffs or cyberattacks on the Russian government, Russian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, or Russian individuals, including politicians, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact Russia&#x2019;s economy and Russian companies in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests. Actual and threatened responses to Russian military &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;action may also impact the markets for certain Russian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodities, such as oil and natural gas, as well as other sectors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Russian economy, and are likely to have collateral impacts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on such sectors globally. Russian companies may be unable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pay dividends and, if they pay dividends, the Fund may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to receive them. As a result of sanctions, the Fund is currently &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restricted from trading in Russian securities, including those in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio, and the Underlying Index has removed Russian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities. It is unknown when, or if, sanctions may be lifted or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s ability to trade in Russian securities will resume.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_RiskOfInvestingInSaudiArabiaMember"
      id="t_1135_e910ecb5_541d_5d8d_1141_b30bb2a43f58"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Saudi Arabia&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers subjects the Fund to legal, regulatory, political, currency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, and economic risks that are specific to Saudi Arabia. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economy of Saudi Arabia is dominated by petroleum exports. A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sustained decrease in petroleum prices could have a negative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on all aspects of the economy. Investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of Saudi Arabian issuers involve risks not typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with investments in securities of issuers in more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries, which may negatively affect the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s investments. Such heightened risks may include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, the expropriation and/or nationalization of assets, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on and government intervention in international trade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;confiscatory taxation, political instability, including authoritarian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or military involvement in governmental decision-making, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;armed conflict, crime and instability as a result of religious, ethnic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or socioeconomic unrest. Instability in the Middle East region &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could adversely impact the economy of Saudi Arabia, and there is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no assurance of political stability in Saudi Arabia.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The ability of foreign investors to invest in the securities of Saudi &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arabian companies could be restricted by the Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government at any time, and unforeseen risks could materialize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to foreign ownership of such securities. There are a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;number of ways to conduct transactions in equity securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Saudi Arabian market. The Fund generally expects to transact in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;manner so that it is not limited by Saudi Arabian regulations to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;single broker. However, there may be a limited number of brokers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;who can provide services to the Fund, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the prices, quantity or timing of Fund transactions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_SovereignAndQuasiSovereignObligationsRiskMember"
      id="t_1136_0d205fd7_e1b3_c930_5172_74e3ff432664"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Sovereign and Quasi-Sovereign Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in securities issued by or guaranteed by non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign governments&#160;and by entities affiliated with or backed by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-U.S. sovereign governments, which may be unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to repay principal or interest when due. In times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic uncertainty, the prices of these securities may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatile than those of corporate debt obligations&#160;or of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government debt obligations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_TaxRiskMember"
      id="t_1137_0706133d_f2fa_bb61_9e80_390c9b450e8a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in derivatives. The federal income tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;treatment of a derivative may not be as favorable as a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in an underlying asset. Derivatives may produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable income and taxable realized gain. Derivatives may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the timing, character and amount of income the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund realizes from its investments. As a result, a larger portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s distributions may be treated as ordinary income rather &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than as capital gains. In addition, certain derivatives are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mark-to-market or straddle provisions of the Internal Revenue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Code of 1986, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Internal Revenue Code&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). If such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provisions are applicable, there could be an increase (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decrease) in the amount of taxable dividends paid by the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Income from swaps is generally taxable. In addition, the tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;treatment of certain derivatives, such as swaps, is unsettled and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to future legislation, regulation or administrative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pronouncements issued by the U.S. Internal Revenue Service &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As part of the Fund's currency hedging strategy, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;match foreign currency forward contracts with the non-U.S. dollar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;denominated securities whose currency risk is intended to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedged wholly or partially by such contracts. If the Fund were to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;perform such matching for income tax purposes, this matching &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;would potentially result in the Fund&#x2019;s deferral for U.S. federal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income tax purposes of the realized gains or losses attributable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign currency forward contracts until such gains or losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;offset the currency-related losses on the matched non-U.S. dollar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;denominated securities. If the IRS were to disagree with such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deferral treatment or the matching methodology used, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income could become undistributed and incur tax liabilities. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund may reevaluate, adjust, begin, or discontinue the matching &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of such contracts in the future.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_TrackingErrorRiskMember"
      id="t_1142_9f6a8f72_9deb_79ff_35ea_aa958ad2c08a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_TreasuryObligationsRiskMember"
      id="t_1143_a5a8d4dc_424c_eb18_092b_b7a138be5f46">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Treasury Obligations Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Treasury obligations may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other securities in their interest rates, maturities, times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuance and other characteristics and may provide relatively &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower returns than those of other securities. Similar to other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers, changes to the financial condition or credit rating of a &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government may cause the value of the Fund's treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations to decline.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000051261Member_ValuationRiskMember"
      id="t_1144_70242c5f_c047_8bbb_ffdf_07696426e07c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000051261Member"
      id="t_430_60eb4f15_375b_42a6_8112_d2e98e56b488"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000051261Member"
      id="t_1091_cd517826_f38d_9ddf_a0cc_20ddfed63fa1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000051261Member"
      id="t_1092_cb42c389_0bd5_600b_e452_f86679ab0cc3">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000051261Member"
      id="t_1095_fc20d627_e993_1d43_dc5b_e357225733d5">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000051261Member"
      id="t_1094_760aa5ca_8e84_4158_3c1a_a4cfac1e8747">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000051261Member"
      id="t_1093_a34ca5d6_9805_4233_9e21_215542ce235f">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000051261Member"
      id="t_1096_5d802663_2438_720b_866f_2a202bf8f02f"> Calendar Year by Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000051261Member"
      id="t_1097_9c66bccb_bb11_e76c_5089_28c969b9b734"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.38pt;"&gt;5.93%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.33%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000051261Member_C000161648Member"
      id="h_1078_f2516699_ce90_40e1_8457_012a3c17745f">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1079_4f465641_b86b_49b1_884c_b3b1832dde32"
      unitRef="pure">0.0593</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000051261Member_C000161648Member"
      id="h_1080_482ae4d5_7362_496f_90c1_0e67b83cc71e">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000051261Member_C000161648Member"
      id="h_1081_9d9e4b47_80a9_4009_b74a_8f687ea271dc">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1082_6099f354_4f55_4497_93ac_9bd98b5ea40f"
      unitRef="pure">-0.0433</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000051261Member_C000161648Member"
      id="h_1083_e328f8b4_4b34_4e48_bb18_5bb9cde27ace">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000051261Member"
      id="t_432_6c255abd_7441_45c8_bdd4_ae0b4b190d59">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000051261Member_C000161648Member"
      id="t_1098_f48b999d_2404_1985_33bf_4032e7ae1f4b">2015-11-10</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1084_2e78fc16_9468_44ab_bc1d_1cbf6c845aea"
      unitRef="pure">0.0498</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1085_37bf274d_a15d_4adb_8830_5908055070e9"
      unitRef="pure">0.0085</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000051261Member_C000161648Member"
      decimals="4"
      id="h_1086_fd630049_288f_4bee_a36e_6e2b3a052676"
      unitRef="pure">0.0253</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000051261Member_C000161648Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1087_840fc65b_e923_4a43_847b_2f53906fc8ae"
      unitRef="pure">0.0323</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000051261Member_C000161648Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1088_c2813e05_a804_427a_91d9_6594b18e22f6"
      unitRef="pure">-0.0010</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000051261Member_C000161648Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1089_505e546a_50df_4150_8d46_ed28d6c26c0a"
      unitRef="pure">0.0160</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000051261Member_C000161648Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1090_2a5fa3e8_46db_41af_a009_d369ebdb7157"
      unitRef="pure">0.0295</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000051261Member_C000161648Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1091_068c08e9_3b69_45b6_a331_28eb6bc3be20"
      unitRef="pure">0.0025</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000051261Member_C000161648Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1092_4cbabe05_bd84_48bc_8652_dd0e7bf634d5"
      unitRef="pure">0.0155</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000051261Member_BloombergGlobalAggregateBondIndexMember"
      decimals="4"
      id="h_1093_b0e31efc_dbe9_4bde_875b_971d6d07d5ba"
      unitRef="pure">-0.0169</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000051261Member_BloombergGlobalAggregateBondIndexMember"
      decimals="4"
      id="h_1094_5a529abb_03aa_4cb5_8072_1a4c3dff050b"
      unitRef="pure">-0.0196</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000051261Member_BloombergGlobalAggregateBondIndexMember"
      decimals="4"
      id="h_1095_76d00aad_ec4a_483f_986d_a7ce7e79a4a9"
      unitRef="pure">0.0061</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000051261Member_BloombergGlobalAggregateExUSDMember"
      decimals="4"
      id="h_1096_d6fcb5ca_abd5_456d_9471_4a9506771b2d"
      unitRef="pure">0.0516</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000051261Member_BloombergGlobalAggregateExUSDMember"
      decimals="4"
      id="h_1097_987ce33c_3ee7_47c4_b295_b6c6fe37e4d1"
      unitRef="pure">0.0097</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000051261Member_BloombergGlobalAggregateExUSDMember"
      decimals="4"
      id="h_1098_8cda5557_87ba_436d_bf86_65aa85b306b8"
      unitRef="pure">0.0263</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000051261Member"
      id="t_1099_a9f4b9c7_c3b6_8484_61d5_9239760a031d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000051261Member"
      id="t_1100_85d036c8_dff6_b5bc_175e_f5830f70b4c8">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000051261Member"
      id="t_1101_26cda632_c19b_55a6_5486_f3b5e849d007">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000051261Member"
      id="t_1102_be1aa860_ef5f_cb1d_b472_47fe207eb5cc">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000045644Member"
      id="t_1120_451039fb_5ff9_ab5d_9447_c5f8c39aa097"> iSHARES&#xae; CORE TOTAL USD BOND MARKET ETF  Ticker: IUSBStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000045644Member"
      id="t_433_4cd6f7eb_fcbc_4ac9_bfe0_c27a3c758487">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000045644Member"
      id="t_434_3c53673b_6ba0_4016_9f55_232ae013f688"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Core Total USD Bond Market ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds that are rated either investment-grade or high yield.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000045644Member"
      id="t_435_73c00b89_46cf_404c_8994_c3d2ea1b6091">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000045644Member"
      id="t_436_57c5143a_c72a_46ba_813d_a1f27e0a1d36"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other registered investment companies advised by BFA, or its affiliates, through February 28, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2029. The contractual waiver may be terminated prior to February 28, 2029 only upon written agreement of the Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000045644Member"
      id="t_1121_1d10c280_e29b_5c6f_a387_ddcf39d37c22">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000045644Member"
      id="t_1122_04a489f2_5720_2d73_8f9b_8226a0a32137">February 28, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000045644Member"
      id="t_1123_4ad05e6e_bcf8_db67_09ed_a79794f1f6b3">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1099_eab52c57_4cb3_4dab_aad0_1af1f0651a01"
      unitRef="pure">0.0006</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1100_366bfc77_769b_4089_a801_fff7e4258c7f"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1101_7ed7f4d5_7804_435a_b02f_f91fc38b9454"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1102_86cdc252_ced8_40a4_b11e_b4f9e96cc440"
      unitRef="pure">0.0001</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1103_f326682c_0fb0_4ddd_90ad_b968d5fd4a80"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1104_04dad100_fa83_42b3_87f2_36ac8ff84738"
      unitRef="pure">-0.0001</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1105_553e5133_c521_47f9_90bb_42518a194f90"
      unitRef="pure">0.0006</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000045644Member"
      id="t_1124_02f1f042_89ee_2f5f_ffc6_c49163c5e713">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000045644Member"
      id="t_1125_b8d14ddc_b6ec_d8ac_644b_4d369097116f">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000045644Member_C000141927Member"
      decimals="INF"
      id="h_1106_7b646564_a03a_44f7_9106_8c9a9da222eb"
      unitRef="USD">6</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000045644Member_C000141927Member"
      decimals="INF"
      id="h_1107_c5fdff9d_3323_4f57_ad93_a05233372605"
      unitRef="USD">19</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000045644Member_C000141927Member"
      decimals="INF"
      id="h_1108_57337922_de6e_4107_ba9b_0bab2271041e"
      unitRef="USD">35</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000045644Member_C000141927Member"
      decimals="INF"
      id="h_1109_438b0656_0fb2_4a42_a736_2bed7284e1c2"
      unitRef="USD">86</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000045644Member"
      id="t_1126_334f4c83_9402_33ad_e215_313b98f34597">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000045644Member"
      id="t_1127_9263c7a4_3e89_4450_681e_6a533980d86a">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 88% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000045644Member"
      decimals="4"
      id="h_1110_87877bcc_e466_478b_95f1_3169598aa782"
      unitRef="pure">0.88</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000045644Member"
      id="t_438_ba128e72_dc0c_4c23_a7d3_170d391655fd"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000045644Member"
      id="t_439_1be1328e_7177_403e_b513_b1f7a5ab0f06"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Universal Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of U.S. dollar-denominated taxable bonds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rated either investment-grade or high yield (as determined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg Index Services Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). The Underlying Index includes U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, government-related bonds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, U.S. and non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, sovereign, quasi-sovereign, supranational and local &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;authority debt), investment-grade and high yield U.S. corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, mortgage-backed pass-through securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MBS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial mortgage-backed securities, asset-backed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Eurodollar bonds, bonds registered with the SEC or exempt from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registration at the time of issuance or offered pursuant to Rule &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;144A with or without registration rights and U.S. dollar-denominated&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; emerging market bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars. The Underlying Index consisted of securities from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;108 countries or regions as of October 31, 2024. As of October &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by U.S. agency mortgage-backed securities and U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bonds. The components of the Underlying Index are likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index and to-be-announced &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) that have economic characteristics that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;substantially identical to the economic characteristics of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;component securities of the Underlying Index, and the Fund will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest at least 90% of its assets in fixed income securities of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;types included in the Underlying Index that BFA believes will help &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund track the Underlying Index. The Fund will invest no more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than 10% of its assets in futures, options and swaps contracts that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA believes will help the Fund track the Underlying Index as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as in fixed income securities other than the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, but which BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a TBA position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for purposes of calculating investments in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index. Cash and cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments associated with a derivative position will be treated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as part of that position for the purposes of calculating the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of investments included in the Underlying Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000045644Member"
      id="t_1128_13edaf93_4633_0591_3d97_04e7d2d22460"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000045644Member"
      id="t_440_6cb55c86_8d9d_4971_b94c_d490f933eb27"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000045644Member_RiskLoseMoneyMember"
      id="t_1129_82b88559_8d35_093f_321c_e557509cff3f">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_CreditRisksMember"
      id="t_1130_c1e46b73_ebc9_1326_8dd6_7f28b6c17866"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_InterestRateRisksMember"
      id="t_1131_e4bfac04_0366_0211_ec1e_1a5ffce2ce9b"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_MarketRiskMember"
      id="t_1132_d7df7b53_73ce_3ba0_3301_9e9376c20a59"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_IndexRelatedRiskMember"
      id="t_1133_fd5977cd_5934_282c_4d97_2c23824c4552"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_AssetClassRiskMember"
      id="t_1134_1c800b09_c185_e6d5_7ef1_5759ddb0bfee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1135_3d4d45d7_74c2_08a2_d7cd_2553f8b3fa59"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_CallRiskMember"
      id="t_1136_6e5d1780_1bb8_b101_2eb0_bc9f6e2bf9ea"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_ConcentrationRiskMember"
      id="t_1137_ca594c81_853e_fa30_3dd0_8300c92cbf5d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_CybersecurityRiskMember"
      id="t_1138_683132c1_68e7_54de_ebd2_a2e962138fe5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_ExtensionRiskMember"
      id="t_1139_e0f29bbc_6e4f_9e77_0b98_a4eb044cee1d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s income and potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the value of the Fund&#x2019;s investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_HighYieldSecuritiesRiskMember"
      id="t_1140_033c567e_7387_df70_e9b4_5feb9e47474b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_IlliquidInvestmentsRiskMember"
      id="t_1141_ee32e279_5ac9_c999_6570_6774fe949a4d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_IncomeRiskMember"
      id="t_1142_70e8fe77_8b97_be21_7f6e_e4c182b5768f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_IssuerRiskMember"
      id="t_1143_8cca08a5_6ebf_1a84_985f_2eb76b6dc7ec"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1144_dd565325_2de3_974d_e192_ce715d42fbb6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_ManagementRiskMember"
      id="t_1145_ae0b2896_b9dc_1bca_815d_5ce96bf13340"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_MarketTradingRiskMember"
      id="t_1146_77286200_9f7c_b95f_e9c9_7ab324c8e617"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_OperationalRiskMember"
      id="t_1147_15a7aa9c_0d0f_5a1f_64fe_41620bf7cc10"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_PrepaymentRisksMember"
      id="t_1148_cf2d23f3_2c40_7729_a104_8b02c5819252"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Prepayment Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During periods of falling interest rates, issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of certain debt obligations may repay principal prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security&#x2019;s maturity, which may cause the Fund to have to reinvest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in securities with lower yields or higher risk of default, resulting in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a decline in the Fund&#x2019;s income or return potential.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_RiskOfInvestingInChinaMember"
      id="t_1169_94fb161d_821d_33ff_9a40_8d410a29b929"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1170_df423e02_4acd_2d56_f376_f5b523ec0b3a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_RiskOfInvestingInSaudiArabiaMember"
      id="t_1171_3a5bdb5a_d731_05b8_cb33_34e625319a4a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Saudi Arabia&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers subjects the Fund to legal, regulatory, political, currency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, and economic risks that are specific to Saudi Arabia. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economy of Saudi Arabia is dominated by petroleum exports. A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sustained decrease in petroleum prices could have a negative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on all aspects of the economy. Investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of Saudi Arabian issuers involve risks not typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with investments in securities of issuers in more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries, which may negatively affect the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s investments. Such heightened risks may include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, the expropriation and/or nationalization of assets, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on and government intervention in international trade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;confiscatory taxation, political instability, including authoritarian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or military involvement in governmental decision-making, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;armed conflict, crime and instability as a result of religious, ethnic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or socioeconomic unrest. Instability in the Middle East region &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could adversely impact the economy of Saudi Arabia, and there is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no assurance of political stability in Saudi Arabia.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The ability of foreign investors to invest in the securities of Saudi &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arabian companies could be restricted by the Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government at any time, and unforeseen risks could materialize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to foreign ownership of such securities. There are a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;number of ways to conduct transactions in equity securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Saudi Arabian market. The Fund generally expects to transact in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;manner so that it is not limited by Saudi Arabian regulations to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;single broker. However, there may be a limited number of brokers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;who can provide services to the Fund, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the prices, quantity or timing of Fund transactions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_RiskOfInvestingInTheUSMember"
      id="t_1172_1e99681e_9eda_17a7_9369_bc82eaceb671"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_SecuritiesLendingRiskMember"
      id="t_1173_219cc611_bca4_018d_fde7_d8c95d077bbb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_TrackingErrorRiskMember"
      id="t_1174_d69b6dc3_d68a_adb5_bb9e_fe94fcf9c9bb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&#160;A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_USAgencyMortgageBackedSecuritiesRiskMember"
      id="t_1175_573806e3_3c8f_b204_9072_e9906b7698a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Agency Mortgage-Backed Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in &#160;MBS issued or guaranteed by the U.S. government or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;one of its agencies or sponsored entities, some of which may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be backed by the full faith and credit of the U.S. government. MBS &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represent interests in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pools&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; of mortgages and are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rate, prepayment, and extension risk. MBS react &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differently to changes in interest rates than other bonds, and the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prices of MBS may reflect adverse economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions. Small movements in interest rates (both increases and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decreases) may quickly and significantly reduce the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain MBS. MBS are also subject to the risk of default on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying mortgage loans, particularly during periods of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic downturn. Default or bankruptcy of a counterparty to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBA transaction would expose the Fund to possible losses.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_USTreasuryObligationsRiskMember"
      id="t_1176_e360f59f_771a_639e_b419_6113b0bb04f0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000045644Member_ValuationRiskMember"
      id="t_1177_564715d8_6b51_95b8_1877_f5ab23d3fb4d"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000045644Member"
      id="t_441_efff83a9_5c1c_4c57_b7b8_f46577c817dc"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000045644Member"
      id="t_1157_307cb0a2_4d94_f942_bc78_792b159e2c32"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is also the Fund's Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000045644Member"
      id="t_1158_c8bd0aab_28c2_a5b1_8bb1_41a0d880d50e">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index, which is also the Fund's Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000045644Member"
      id="t_1159_6be92f54_45fe_5a80_18ce_d46e28ed0671">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000045644Member"
      id="t_1160_1e40f546_a7fc_3007_2c05_dee283760a2d">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000045644Member"
      id="t_1161_9c84523e_4c2e_7f6c_c0dc_6f54604ada6a">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000045644Member"
      id="t_1162_7049448a_6119_1c49_d0bf_e2accf017b92"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000045644Member"
      id="t_1163_e6cfbf5b_fd26_dfc2_5bff_f01319541bbb"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;6.73%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.98%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000045644Member_C000141927Member"
      id="h_1114_1d2ce13c_8b03_4642_90a5_0470a7e42884">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1115_439c8498_c910_44ca_b641_ae874e53918a"
      unitRef="pure">0.0673</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000045644Member_C000141927Member"
      id="h_1116_fa81e508_a230_42a2_ad01_089b0062e9d1">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000045644Member_C000141927Member"
      id="h_1117_e602d899_abb4_4d9f_a73f_b017ff4f625d">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1118_09562fca_1d06_4fbd_a263_1099a8e668c6"
      unitRef="pure">-0.0598</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000045644Member_C000141927Member"
      id="h_1119_0bb4928d_a3ee_4ffe_bd1a_5cae6e431446">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000045644Member"
      id="t_443_ee06dacc_a7b0_4052_b868_03467bd6c49c">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000045644Member_C000141927Member"
      id="t_1164_ab81c35a_c6d0_39ca_81c0_655f2efae492">2014-06-10</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1120_6f688ee3_2c7c_4bac_aa33_5f3aeed3c48b"
      unitRef="pure">0.0213</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1121_b0380194_aac9_46c3_a6fb_e5ccc95bcc28"
      unitRef="pure">0.0004</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000045644Member_C000141927Member"
      decimals="4"
      id="h_1122_f6fe1681_df7a_498e_83e4_ed58accd6f91"
      unitRef="pure">0.0170</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000045644Member_C000141927Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1123_6d0911d2_8797_484a_adf6_96039d99440d"
      unitRef="pure">0.0048</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000045644Member_C000141927Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1124_1d8e86b9_2e15_4f58_9ef2_530c0488d778"
      unitRef="pure">-0.0112</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000045644Member_C000141927Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1125_7b420aa7_df7f_497b_88ea_9614acbb02f0"
      unitRef="pure">0.0055</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000045644Member_C000141927Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1126_2ca22ce6_dff2_4c8e_a27c_bdecce232c69"
      unitRef="pure">0.0125</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000045644Member_C000141927Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1127_443cda56_0f9d_4877_8ef7_fdbd904d5665"
      unitRef="pure">-0.0045</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000045644Member_C000141927Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1128_e0aee6b6_b798_4088_9d80_3528aeb5ae5c"
      unitRef="pure">0.0081</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000045644Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1129_b6892964_0fa6_44b6_913b_7a5e4f48dc0c"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000045644Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1130_1e5c3e0b_c8ad_4bad_913c_b43ef5dadb64"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000045644Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1131_c7890590_972e_46d8_92fe_5e2fc62b10a8"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000045644Member"
      id="t_1165_4e66ffe8_5272_d378_570b_b63ed05572d2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000045644Member"
      id="t_1166_d3cc1aaa_4404_9fbc_6379_bcf524dfb5f0">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000045644Member"
      id="t_1167_b610100b_d2e4_28fd_bd7f_0a52abd08c4b">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000045644Member"
      id="t_1168_de34a076_857b_6ab3_a066_d58f1b498e4a">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000033136Member"
      id="t_1150_54ef6688_7b5e_e43e_37ef_a98aaddfb0f7"> iSHARES&#xae; FLOATING RATE BOND ETF  Ticker: FLOTStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000033136Member"
      id="t_444_72b137c4_d350_4e05_8d12_26cc081da522">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000033136Member"
      id="t_445_dca29fac_141b_4dd5_aed8_6028b3d38d79"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Floating Rate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade floating rate bonds with remaining maturities between one month and five years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000033136Member"
      id="t_446_85b60700_dfcb_43c4_8e5f_ed0bf5c7b5eb">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000033136Member"
      id="t_447_0d7dd24f_520c_45cc_8f06_e31b2e26f811"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000033136Member"
      id="t_1168_c1aff2d7_04e9_8d78_d3d5_f94dcaedbd39">Annual Fund Operating Expenses(ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1132_95e693e4_b69e_4af2_ab26_c232d7befdd6"
      unitRef="pure">0.0015</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1133_edebc50e_88f3_46c4_911a_663f3c6e4b2a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1134_c54925c2_317c_4b53_89db_af76b24d7cf1"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1135_f3236a14_f434_4998_9440_8edad7bf5e02"
      unitRef="pure">0.0015</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000033136Member"
      id="t_1151_f69268f3_51af_71c6_985e_016c617ea661">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000033136Member"
      id="t_1198_87842656_fed0_549d_aa8d_3e41d96dc979">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000033136Member_C000102031Member"
      decimals="INF"
      id="h_1136_77c7d307_c1dc_4376_a8d8_4103cea20c7d"
      unitRef="USD">15</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000033136Member_C000102031Member"
      decimals="INF"
      id="h_1137_9b5afca7_877c_4b6a_8523_34e94bd825ca"
      unitRef="USD">48</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000033136Member_C000102031Member"
      decimals="INF"
      id="h_1138_d4eee818_7271_47f4_b212_bf554d0f36bb"
      unitRef="USD">85</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000033136Member_C000102031Member"
      decimals="INF"
      id="h_1139_53a9f5da_da6b_4bf1_837c_41e363e706f5"
      unitRef="USD">192</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000033136Member"
      id="t_1153_72912995_c7f1_0a7b_3cf0_6e1cc52f6bb0">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000033136Member"
      id="t_1154_10e03e5f_8712_fe28_259f_5d850d5263e8">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 37% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000033136Member"
      decimals="4"
      id="h_1140_7b232184_efcb_4278_bace_6d105f1e966b"
      unitRef="pure">0.37</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000033136Member"
      id="t_449_bd552f93_1d65_4513_96f4_7d646d226a67"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000033136Member"
      id="t_450_b15eb64e_49d5_49be_af9e_779cd1604648"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;US Floating Rate Note &#x2c2; 5 Years Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which measures the performance of U.S. dollar-denominated, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (as determined by Bloomberg Index Services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) floating rate notes. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities in the Underlying Index have a remaining maturity of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater than or equal to one month and less than five years, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have $300 million or more of outstanding face value. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represented by securities of companies in the financials industry &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or sector. As of October 31, 2024, the Underlying Index was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composed of securities of companies in the following countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regions: Australia, Canada, Finland, France, Germany, Japan, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Netherlands, New Zealand, Norway, Singapore, South Korea, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Spain, Sweden, Switzerland, the United Kingdom (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.K.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. The components of the Underlying Index are likely to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of debt instruments that pay a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;variable coupon rate, based on a reference rate such as the 3-month&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; London Interbank Offered Rate (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;LIBOR&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or the Secured &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Overnight Financing Rate (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOFR&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and a fixed spread. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is market capitalization-weighted and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index are updated on the last calendar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;day of each month. The Underlying Index may include U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered, dollar-denominated bonds of non-U.S. corporations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;governments and supranational entities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000033136Member"
      id="t_1191_46496cfc_968e_04ba_4e64_f7e23767ad5f"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000033136Member"
      id="t_451_130b6b5b_c6f3_4f46_962a_7abf870da2b4"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000033136Member_RiskLoseMoneyMember"
      id="t_1192_fa1262f4_35ab_0d53_c279_cc2bb12c7e9d">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_FloatingRateSecuritiesRiskMember"
      id="t_1162_4525f79e_72e4_0211_c20c_8759b204942b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Floating Rate Securities Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities with floating or variable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates can be less sensitive to interest rate changes than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities with fixed interest rates, but may decline in value if their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rates do not reset as high, or as quickly, as comparable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market interest rates, and generally carry lower yields than fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the same maturity. Although floating rate securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are less sensitive to interest rate risk than fixed-rate securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;they are subject to credit risk and default risk, which could impair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_CreditRisksMember"
      id="t_1163_fbe9b7b9_a505_3f03_77be_98068de5fd16"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_InterestRateRisksMember"
      id="t_1164_3dbbc41e_9565_63c6_78e8_a9b584e985a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_MarketRiskMember"
      id="t_1165_190021ee_0a75_1d19_af48_1c8cf13d5594"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_IndexRelatedRiskMember"
      id="t_1166_e28a85bb_e03f_9db5_a5d5_37b6cedf4c8c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_AssetClassRiskMember"
      id="t_1167_e5cdb0fe_5bca_c3c0_57c4_b1f2ef81f541"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1169_36c9f237_9fe2_6a67_9912_89226cb216d7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_CallRiskMember"
      id="t_1170_e5f318b1_6cf9_64e2_82d7_dceaf456aa6e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_ConcentrationRiskMember"
      id="t_1171_eba59661_8ce9_a589_6fee_6e0d117de5f2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_CurrencyRiskMember"
      id="t_1172_eda7c2d2_7c7d_784e_e2f2_4a05b6459e90"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_CybersecurityRiskMember"
      id="t_1173_658ebccc_fd3d_f5dd_aba6_3ab9938e33f8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_FinancialCompaniesRiskMember"
      id="t_1174_8a9b9cee_0b3e_d585_ae03_1bade489f2b2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_IlliquidInvestmentsRiskMember"
      id="t_1199_ac8426fb_eccc_d98a_8239_a71dc200466b">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_IncomeRiskMember"
      id="t_1200_43535814_78cc_1815_ccdf_2d155cf29bea">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because most of the debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments held by the Fund have floating or variable interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_IssuerRiskMember"
      id="t_1201_d5e595f6_9bcc_4a8a_bd91_bf036c14c99c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_ManagementRiskMember"
      id="t_1202_ff29f969_38c2_e719_b104_79dbafef077b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_MarketTradingRiskMember"
      id="t_1203_483b3ca3_56a9_1689_a558_15bf61e90057">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000033136Member_NationalClosedMarketTradingRiskMember"
      id="t_1204_1a66d70e_b2c2_885f_0f57_df6651b56439">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_NonUSSecuritiesRiskMember"
      id="t_1205_220ff1a9_38ad_badc_fc01_9a1360795ea7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_OperationalRiskMember"
      id="t_1206_45e37bd2_6450_7243_fe53_d36fe4fe96f4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_1207_cfa0a97a_dc08_d3c3_a22e_912b37bbbb26">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_RiskOfInvestingInChinaMember"
      id="t_1208_592e4f8a_2b80_f3f9_b31d_1178a3e0071c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1209_0c18ffd4_0bb2_bee2_8930_61bc6e47332d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_RiskOfInvestingInDevelopedCountriesMember"
      id="t_1210_86958e41_7c88_f5dc_d56d_adb2c99a42a7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Developed Countries&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in&#160;&#160;developed country issuers will subject the Fund to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legal, regulatory, political, currency, security, economic and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks associated with developed countries. Developed countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to represent a significant portion of the global economy and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have generally experienced slower economic growth than some &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less developed countries. Certain developed countries have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experienced security concerns, such as war, terrorism and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Incidents involving a country&#x2019;s or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;region&#x2019;s security may cause uncertainty in its markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect its economy and the Fund&#x2019;s investments. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, developed countries may be adversely impacted by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes to the economic conditions of certain key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners, regulatory burdens, debt burdens and the price or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;availability of certain commodities.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_RiskOfInvestingInTheUSMember"
      id="t_1211_26458b6f_8cc6_b7fc_0edf_051e0b53245a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_SecuritiesLendingRiskMember"
      id="t_1212_1d8a756a_09ae_dd4e_1120_f2f7cddfc5d9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_SupranationalEntitiesRiskMember"
      id="t_1213_12900a1d_9c28_eccb_cc7b_d6c1d2b00dba">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Supranational Entities Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in obligations &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued or guaranteed by supranational entities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the World &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bank, European Investment Bank, Inter-American Development &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bank, and Asia Development Bank), which may be unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to repay principal or interest when due. The government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;members, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;stockholders,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; usually make initial capital &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contributions to the supranational entity and, in many cases, are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;committed to make additional capital contributions if such entity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is unable to repay its borrowings. There is no guarantee that one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or more stockholders of the supranational entity will continue to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;make any necessary additional capital contributions. If such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contributions are not made, the entity may be unable to pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest or repay principal on its debt securities, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have limited legal recourse in the event of default, and the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may lose money on such investments.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_TrackingErrorRiskMember"
      id="t_1214_630f028d_cc1a_5f1c_1a6e_b0d200941437">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000033136Member_ValuationRiskMember"
      id="t_1215_d245868d_380e_d684_dbc1_32f6749e9582">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000033136Member"
      id="t_452_1d81c29a_4c47_4e20_8cba_b5848b059300"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000033136Member"
      id="t_1155_41904583_1f1e_d318_518d_a1206d23fb43"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000033136Member"
      id="t_1158_4c3d4244_f73c_3b00_747e_5089da49cc18">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000033136Member"
      id="t_1159_91c43d31_69b4_f665_8039_87b4fd25bccd">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000033136Member"
      id="t_1160_cf75bc5d_4456_1c58_c132_2d939e6d15a6">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000033136Member"
      id="t_1161_4166bf6c_2201_d0bf_4d65_bf5adaa107a5">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000033136Member"
      id="t_1156_9752efcf_bf55_f924_5ea1_64c360c9448b"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000033136Member"
      id="t_1157_e55be73d_6670_ea54_3f40_de9a041d6bca"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;3.26%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-3.06%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000033136Member_C000102031Member"
      id="h_1144_ec634e33_bfa5_4f30_889e_b92fcc5d127f">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1145_6d9509f3_85cc_4479_8875_80121d167019"
      unitRef="pure">0.0326</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000033136Member_C000102031Member"
      id="h_1146_78ad4dd8_f5ea_49e0_9a57_c9abdc90a300">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000033136Member_C000102031Member"
      id="h_1147_01f806a2_8f4f_4160_b909_e831269a952a">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1148_b41f0968_4d84_46fa_aa92_27a5cb1d534a"
      unitRef="pure">-0.0306</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000033136Member_C000102031Member"
      id="h_1149_abeee6e1_4355_4c58_91fe_c842fb7ab7b7">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000033136Member"
      id="t_454_3e42ce5b_1964_4181_969c_d383d0f6df2a">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000033136Member_C000102031Member"
      id="t_1193_01be16f6_0560_7bdc_d270_54b1da8da206">2011-06-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1150_814cf3af_a0ad_4e40_b457_0a100cd8629d"
      unitRef="pure">0.0642</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1151_e0f121a4_9425_4969_bd24_f38100e3abc1"
      unitRef="pure">0.0305</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000033136Member_C000102031Member"
      decimals="4"
      id="h_1152_6fcf5a94_be44_4a60_9a13_b0fff7efaac7"
      unitRef="pure">0.0240</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000033136Member_C000102031Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1153_31f4a8a3_437d_4802_bf93_052a9f34e743"
      unitRef="pure">0.0393</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000033136Member_C000102031Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1154_88e4c101_9ccf_453a_8e3d_4a5bc655367d"
      unitRef="pure">0.0178</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000033136Member_C000102031Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1155_4a306f44_e40f_4da0_aab5_b907c9e47a5f"
      unitRef="pure">0.0143</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000033136Member_C000102031Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1156_0b7629d3_ed95_42b6_8696_3f65efb8ffc2"
      unitRef="pure">0.0376</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000033136Member_C000102031Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1157_b1b29800_fc5a_435b_a4d3_8ad68cca4821"
      unitRef="pure">0.0179</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000033136Member_C000102031Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1158_5e9452ee_8795_4a05_b9e3_2a4171c64c00"
      unitRef="pure">0.0142</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000033136Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1159_3dbfd814_b1b9_49fd_8d3e_1efece1087f2"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000033136Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1160_3a3412ff_16f9_44c2_a12d_a0bda58798f8"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000033136Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1161_3a40faa5_4d0a_4c66_8774_0db46361e349"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000033136Member_BloombergUSFloatingRateNote5YearsIndexMember"
      decimals="4"
      id="h_1162_06f39020_5640_45bb_b2d3_6296a0e024a6"
      unitRef="pure">0.0639</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000033136Member_BloombergUSFloatingRateNote5YearsIndexMember"
      decimals="4"
      id="h_1163_1da81c12_b9ca_4514_8ed0_e17d0cd160a5"
      unitRef="pure">0.0324</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000033136Member_BloombergUSFloatingRateNote5YearsIndexMember"
      decimals="4"
      id="h_1164_8de8ad4e_3c1d_4806_9861_777f6af7f78f"
      unitRef="pure">0.0263</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000033136Member"
      id="t_1197_b64f825f_51b4_ef20_ab8d_fbba0b2138ed"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000033136Member"
      id="t_1194_918e10bd_42b4_32b2_5f30_03713f1c9422">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000033136Member"
      id="t_1195_f7e6cccc_47bb_e133_5b8e_81bbca0c96a6">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000033136Member"
      id="t_1196_08b3171d_8abb_8bb0_377c_45ab684f06bb">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000023614Member"
      id="t_1183_62751d4b_b8bf_83c7_3210_71a712ecb09c"> iSHARES&#xae; INTERNATIONAL TREASURY BOND ETF  Ticker: IGOVStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000023614Member"
      id="t_455_fc6f8c7c_14dd_4c84_83d6_30c96aecd892">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000023614Member"
      id="t_456_7de269da_2293_4c1b_b893_b8757ac90c73"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares International Treasury Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed market government bonds.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000023614Member"
      id="t_457_96723a0d_e1ef_4c20_b0e9_fd035b5eefe2">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000023614Member"
      id="t_458_c17b0022_622d_4e62_be94_fb5170513942"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000023614Member"
      id="t_1184_8e8b59e3_0b0c_d901_7bcb_2c8636e9bb0b">Annual Fund Operating Expenses(ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1165_c9fdde14_f923_4425_8084_d392dba1c329"
      unitRef="pure">0.0035</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1166_e9d32b34_2d1d_457d_b397_f6fac95f2826"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1167_602df7fd_9a1b_42f1_b9e7_f2cd65404d74"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1168_dd7068d1_129e_4805_867f_92cac2ed18c0"
      unitRef="pure">0.0035</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000023614Member"
      id="t_1185_1a2afa8c_6022_2d21_c99e_c68c5aa493cd">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000023614Member"
      id="t_1227_a5c3ab0e_25ba_cbd1_9035_830bd6c62230">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000023614Member_C000069477Member"
      decimals="INF"
      id="h_1169_b103d0d6_65e2_46c5_8ff6_c43e15e2ab6c"
      unitRef="USD">36</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000023614Member_C000069477Member"
      decimals="INF"
      id="h_1170_7e061292_82ab_407c_ae4d_298189988547"
      unitRef="USD">113</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000023614Member_C000069477Member"
      decimals="INF"
      id="h_1171_61a07a82_c372_41e5_94a1_66704577dd02"
      unitRef="USD">197</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000023614Member_C000069477Member"
      decimals="INF"
      id="h_1172_b727a4bc_bff1_4322_9728_d3066269542c"
      unitRef="USD">443</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000023614Member"
      id="t_1187_f73fb326_10a8_ccd4_11ba_d2ebfec400d7">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000023614Member"
      id="t_1188_4dcd7ab3_dd0a_667b_50f1_ea1f65875b9b">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 27% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000023614Member"
      decimals="4"
      id="h_1173_1213ddab_e78c_431e_a5ef_ac8bb4b032ab"
      unitRef="pure">0.27</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000023614Member"
      id="t_460_1d03e5fc_3097_432d_8b37_8fc645eada6b"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000023614Member"
      id="t_461_af55f6ac_0bb0_4778_b07c_feb3c00e116b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the FTSE World &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Government Bond Index &#x2013; Developed Markets Capped Select &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of fixed-rate, local currency, investment-grade, sovereign bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from certain developed markets, and is a subset of the FTSE &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;World Government Bond Index - Developed Markets (WGBI-DM) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;For a security to be eligible for inclusion in the Underlying Index, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the issuing country must be classified by the International &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Monetary Fund or by the World Bank as a developed country, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;must meet market accessibility standards (as determined by FTSE &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fixed Income LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;FTSE&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), and must &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a minimum market size greater than each of USD 50 billion, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;EUR 40 billion and JPY 5 trillion. Market size is defined as the total &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding market value of eligible securities. However, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index excludes the U.S. The minimum credit rating for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entry to the Underlying Index is A- by Standard &amp;amp; Poor&#x2019;s Financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Services LLC (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;S&amp;amp;P&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and A3 by Moody&#x2019;s Investors Service, Inc. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody&#x2019;s&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying Index includes bonds having a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining maturity greater than one year.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The market value-based weights of each individual country in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are capped at 21%. Furthermore, the total &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market weights of the countries with more than 4.6% market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weight in the index cannot exceed 47% of the total index weight. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Constituent securities of each country are assigned weights in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proportion to their market value. The Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced on a monthly basis at month end. As of October 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2024, the Underlying Index was composed of 884 components.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by FTSE, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000023614Member"
      id="t_1200_a8b8f6de_68b8_42c8_34cc_878df6b8bb00"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000023614Member"
      id="t_462_e4464f84_e820_453f_bd6f_466805d31983"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000023614Member_RiskLoseMoneyMember"
      id="t_1201_ea3b902a_7dbd_85e8_002b_ef556e50496d">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_SovereignAndQuasiSovereignObligationsRiskMember"
      id="t_1202_53249351_4cbc_1cad_460b_c77fe8d0e277"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Sovereign and Quasi-Sovereign Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in securities issued by or guaranteed by non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign governments&#160;and by entities affiliated with or backed by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-U.S. sovereign governments, which may be unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to repay principal or interest when due. In times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic uncertainty, the prices of these securities may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatile than those of corporate debt obligations&#160;or of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government debt obligations. Sovereign obligations may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from other securities in their interest rates, maturities, times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuance and other characteristics and may provide relatively &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower returns than those of other securities. Similar to other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers, changes to the financial condition or credit rating of a &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government may cause the value of the Fund&#x2019;s sovereign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations to decline.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_InterestRateRisksMember"
      id="t_1203_90a2a5ee_719c_a3b0_9f36_2abc6451535c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_NonUSSecuritiesRiskMember"
      id="t_1204_c60c2cfe_4d19_0e8d_a564_8cffd3efc0de"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;&#160;European Economic Risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_MarketRiskMember"
      id="t_1205_2284e8d0_f038_8001_5c49_96dc3e6b1430"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_IndexRelatedRiskMember"
      id="t_1206_c45cd842_c0d9_bbe6_7e17_5a8cf2c42cf2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_AssetClassRiskMember"
      id="t_1207_d3a8a035_160e_4eb8_d244_0b0ac7e98fd4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1208_cf4a0b8a_5590_a543_a3a9_3796579e1008"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000023614Member_CallRiskMember"
      id="t_1209_c75034db_5850_3486_d703_f1e779b789dd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_ConcentrationRiskMember"
      id="t_1210_6bc988da_9d8c_b3af_ff5c_6c9f6bcd176e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_CreditRisksMember"
      id="t_1211_3492987e_06b3_9dcd_ca55_b953a04bf546"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_CurrencyRiskMember"
      id="t_1212_ff343f81_cd84_632e_77f8_2eb0bed5bde9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_CybersecurityRiskMember"
      id="t_1213_0564034b_625f_fac4_d156_8454dba7494c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_IlliquidInvestmentsRiskMember"
      id="t_1214_ae2887c6_123d_fd24_302e_ba0b0ca87fe5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_IncomeRiskMember"
      id="t_1215_db41b0e3_8f36_e6c0_19ed_355f7a73e554"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_IssuerRiskMember"
      id="t_1216_f3479d85_700c_38a0_68f7_427fcc34fdb3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_ManagementRiskMember"
      id="t_1217_c45bf9e7_d369_1f85_492f_92dd0207b66d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA and the Sub-Adviser may not produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the intended results. There is no guarantee that the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results will have a high degree of correlation to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index or that the Fund will achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_MarketTradingRiskMember"
      id="t_1218_9102cafc_a9f9_3bf6_970b_217701f0681b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_NationalClosedMarketTradingRiskMember"
      id="t_1219_aa00eb96_0111_c37c_fa85_5fe7d309d1f1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_RiskNondiversifiedStatusMember"
      id="t_1220_3b9deff1_a81d_d1c4_d130_eae9a7bf6177"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_OperationalRiskMember"
      id="t_1221_111076b9_020f_85d8_db2a_fa0ee0199f56"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_RelianceOnTradingPartnersRiskMember"
      id="t_1222_44b327f1_88df_db2a_553e_7e276b73afa0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments. Through its holdings of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of certain issuers, the Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk, European Economic Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Economic Risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_RiskOfInvestingInDevelopedCountriesMember"
      id="t_1223_f9b16d17_164b_090f_1959_e0d5d0bffddf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Developed Countries&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in&#160;&#160;developed country issuers will subject the Fund to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legal, regulatory, political, currency, security, economic and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks associated with developed countries. Developed countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to represent a significant portion of the global economy and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have generally experienced slower economic growth than some &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less developed countries. Certain developed countries have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experienced security concerns, such as war, terrorism and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Incidents involving a country&#x2019;s or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;region&#x2019;s security may cause uncertainty in its markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect its economy and the Fund&#x2019;s investments. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, developed countries may be adversely impacted by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes to the economic conditions of certain key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners, regulatory burdens, debt burdens and the price or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;availability of certain commodities.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_TrackingErrorRiskMember"
      id="t_1224_3750a44f_d538_647e_dff7_f6f4c51d177b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000023614Member_ValuationRiskMember"
      id="t_1225_43c3fdad_8492_2004_e59d_cb75daa79dc0"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000023614Member"
      id="t_463_694e749f_afad_4da2_987b_8c1f5ccfa821"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000023614Member"
      id="t_1189_7170b404_ff3b_741c_8e98_7cde6fbc9124"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000023614Member"
      id="t_1192_6afe744a_d965_f6f3_48d3_0cd81129200f">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000023614Member"
      id="t_1193_7368f507_84a0_703e_5a91_7539ea4335d0">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000023614Member"
      id="t_1194_a9fa0d1c_b0f4_4d9d_22c9_53b704ee6c85">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000023614Member"
      id="t_1195_713ccdd0_8951_4eb2_e48d_16b91835b9e8">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000023614Member"
      id="t_1190_9665964e_50f1_4101_1a2b_fa53e28e723a"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000023614Member"
      id="t_1191_4e543e84_d17e_4de3_5045_4955d554b42b"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 27.77pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 27.77pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.45pt;"&gt;10.94%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 27.77pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 27.77pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-11.99%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000023614Member_C000069477Member"
      id="h_1177_746fd144_d8d2_4442_9501_310efe9dd141">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1178_2d19b0cc_ebe1_48ce_843a_9c284bf4d5f1"
      unitRef="pure">0.1094</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000023614Member_C000069477Member"
      id="h_1179_dc73852c_a3f1_4bff_ae0d_aed27373a63f">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000023614Member_C000069477Member"
      id="h_1180_3f9a2a1d_5e55_4c0a_b215_d77f971b38f8">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1181_14ca7bda_e1fe_478e_a536_0e6da8632a2a"
      unitRef="pure">-0.1199</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000023614Member_C000069477Member"
      id="h_1182_86400b14_245a_49a9_91e9_545b2bf7d6ac">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000023614Member"
      id="t_465_8dc142ac_394d_4c76_85a6_0f912b29093b">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000023614Member_C000069477Member"
      id="t_1226_1bfba7e4_d7b8_4d3e_463a_7d1ce3d307c1">2009-01-21</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1183_26d80025_ffb5_421a_992f_7cc042f64158"
      unitRef="pure">-0.0641</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1184_a0d41ce5_9477_4ebc_aab4_bc8d1755a593"
      unitRef="pure">-0.0501</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023614Member_C000069477Member"
      decimals="4"
      id="h_1185_01d9d7ec_fe10_450c_8b95_c342f2aa69b4"
      unitRef="pure">-0.0197</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023614Member_C000069477Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1186_66a0fe01_6d57_476f_8dea_67dd7290dbf0"
      unitRef="pure">-0.0663</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023614Member_C000069477Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1187_8037b8e8_d738_48b5_919d_2156d01bbe31"
      unitRef="pure">-0.0509</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023614Member_C000069477Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1188_38a98c47_8a50_40da_84d9_16eb15afe5fc"
      unitRef="pure">-0.0208</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023614Member_C000069477Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1189_7114d614_afbb_4ba3_b8ca_c551211e7308"
      unitRef="pure">-0.0379</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023614Member_C000069477Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1190_52943e6e_1f72_4d32_a2f5_38be172292a8"
      unitRef="pure">-0.0375</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023614Member_C000069477Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1191_0b32b9f0_5a7c_48eb_b43e_9cc6f8b3f243"
      unitRef="pure">-0.0151</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023614Member_FTSEWorldBroadInvestmentGradeBondIndexMember"
      decimals="4"
      id="h_1192_50ee8de0_188d_4c23_a6f5_51319e717016"
      unitRef="pure">-0.0148</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023614Member_FTSEWorldBroadInvestmentGradeBondIndexMember"
      decimals="4"
      id="h_1193_90d4e958_08c2_4add_867b_acad7b48621f"
      unitRef="pure">-0.0209</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023614Member_FTSEWorldBroadInvestmentGradeBondIndexMember"
      decimals="4"
      id="h_1194_410b593c_c650_4dd3_825e_ce8277b608d4"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000023614Member_FtseIndexFourMember"
      decimals="4"
      id="h_1195_6e28b3a8_a056_4bba_ba62_7519dc501857"
      unitRef="pure">-0.0615</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000023614Member_FtseIndexFourMember"
      decimals="4"
      id="h_1196_d88f7fc1_adf4_4be6_900e_0db9a0ddbf40"
      unitRef="pure">-0.0467</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000023614Member_FtseIndexFourMember"
      decimals="4"
      id="h_1197_39b2a135_5e35_45d9_94b0_aa34bf68b45f"
      unitRef="pure">-0.0161</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000023614Member"
      id="t_1199_9dc3e33d_9647_0d20_5f23_50cd28a189bf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000023614Member"
      id="t_1196_6127a7f7_3a25_2f47_ada7_99b60802fe9e">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000023614Member"
      id="t_1197_d4f92ee6_05e4_07b3_9aa2_5804800b0b78">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000023614Member"
      id="t_1198_8baf963d_3e6d_33c4_337b_25fe5ba9c3b9">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000077383Member"
      id="t_1216_d8d743a3_2c05_0992_4d93_3b2c879279d5"> iSHARES&#xae; J.P. MORGAN BROAD USD EMERGING MARKETS BOND ETF  Ticker: BEMBStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000077383Member"
      id="t_466_c24d62b7_1f75_499c_99d2_b8bcaf7e8f0b">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000077383Member"
      id="t_467_b77f6893_eb88_49bd_b5a3_2baf714bdf93"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares J.P. Morgan Broad USD Emerging Markets Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of U.S. dollar-denominated bonds issued by emerging market sovereign, quasi-sovereign, and corporate entities.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000077383Member"
      id="t_468_d72bee5a_0773_4759_a99b_d8228fda7e74">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000077383Member"
      id="t_469_7bcfcfa0_12e2_4321_80b8_b0bb5f3b9c6c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000077383Member"
      id="t_1217_9ab3f6f5_b7d1_8fd1_c5a5_1cfa8bdd85d9">Annual Fund Operating Expenses(ongoing expenses that you pay each year as a percentage of the value of your investments)1,2</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1198_5214373f_00f9_47c2_ac45_a2aa4ee927ce"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1199_fcd18706_20a8_46b2_8f77_20f8cf079037"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1200_8f7d57e2_3abe_4ae2_8fd6_fc280de46b30"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1201_e9c20f43_186d_48f8_9bd0_692f50333301"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:ExpensesRestatedToReflectCurrent
      contextRef="S000077383Member"
      id="t_1262_31e99b42_e477_df5a_c2ef_c5ac2a448c81">The expense information in the table has been restated to reflect current fees.</rr:ExpensesRestatedToReflectCurrent>
    <rr:ExpenseExampleHeading
      contextRef="S000077383Member"
      id="t_1218_1efe7078_cba0_aa3d_49bc_7c15039e166c">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000077383Member"
      id="t_1269_c414e3eb_6e5a_609c_3649_d345416fb80e">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000077383Member_C000237776Member"
      decimals="INF"
      id="h_1202_ad0498a2_be75_4477_b12f_f12cabb38114"
      unitRef="USD">18</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000077383Member_C000237776Member"
      decimals="INF"
      id="h_1203_d21349fa_bc1d_427e_a6b5_ff18dfbf3c1f"
      unitRef="USD">58</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000077383Member_C000237776Member"
      decimals="INF"
      id="h_1204_9b7bd59b_0233_4351_9447_a9f2cdd880be"
      unitRef="USD">101</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000077383Member_C000237776Member"
      decimals="INF"
      id="h_1205_bdbc9562_81ea_4be4_90cf_3411c71966a5"
      unitRef="USD">230</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000077383Member"
      id="t_1227_b3a58f15_8a6c_ccba_d6e7_d1d762f69da6">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000077383Member"
      id="t_1228_780fcebc_84ad_24a4_1816_108d7ac198fd">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 11% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000077383Member"
      decimals="4"
      id="h_1206_38c1a97a_db18_4700_8174_abf71bc951d1"
      unitRef="pure">0.11</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000077383Member"
      id="t_471_afd2399f_f8d3_4e24_92cb_81db638d9ddf"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000077383Member"
      id="t_472_c93e2192_d0b5_4eab_892e_4a3a25086c8c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the J.P. Morgan &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;EM Sovereign and Corporate Credit Core Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which was developed by JPMorgan Chase &amp;amp; Co. or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;J.P. Morgan&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is composed of U.S. dollar-denominated bonds issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign, quasi-sovereign and corporate issuers in emerging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;EM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), as defined by the Index Provider. The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is market capitalization-weighted subject to diversification &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;constraints that aim to provide a more even distribution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weights across the constituent countries.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bonds are eligible for inclusion in the Underlying Index if they are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by (i) an EM sovereign; (ii) an EM quasi-sovereign entity, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defined as an entity that is 100% guaranteed or 100% owned by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the government; or (iii) a corporate entity that is headquartered in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an EM country, that has 100% of its assets in EM countries or that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has 100% of assets securing the issue in EM countries. Corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers must be domiciled in Africa, Asia (excluding Japan), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Eastern Europe, Middle East or Latin America. For sovereign and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;quasi-sovereign issuers, country eligibility is based on gross &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;national income per capita or gross domestic product indexed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchasing power. Some countries in the Underlying Index that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are classified as EM by the Index Provider may be classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;frontier markets by other index providers or treated as such by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain market participants.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Eligible sovereign and quasi-sovereign issues must have a current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;face amount outstanding of at least $1 billion. Eligible corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must have a current face amount outstanding of at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;$500 million. All securities in the Underlying Index must be U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated and have at least 2.5 years to maturity to be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included and a remaining maturity of at least one year at the time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of rebalancing to stay in the Underlying Index. There are no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ratings restrictions on either the individual bonds or the country &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of risk. As a result, the Underlying Index consists of both &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade and non-investment-grade bonds (commonly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include fixed-rate, floating-rate and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capitalizing/amortizing bonds, as well as privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities, including those that are normally purchased pursuant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to Rule 144A or Regulation S promulgated under the Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Act of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Convertible bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation-linked instruments and defaulted corporate bonds are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excluded.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider uses market capitalization weighting subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversification constraints, which are designed to limit the weights &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of countries in the Underlying Index with greater debt outstanding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by applying an overall 10% cap on country weight and reallocating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess weight to countries with lower debt outstanding. The &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index is rebalanced on the last U.S. business day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, the Underlying Index included issuers in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;67 EM countries, and a significant portion of the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included sovereign and corporate bonds, including bonds of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies in the financials industry or sector. The components of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are likely to change over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by J.P. Morgan, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;/div&gt;    &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000077383Member"
      id="t_1226_741d2282_98de_e5a2_f5b6_ae1d79db553b"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For   purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000077383Member"
      id="t_473_c80fcd40_3ab0_4870_868c_9bd426cc1c8b"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000077383Member_RiskLoseMoneyMember"
      id="t_1263_27ef538e_ab44_3229_7307_ef5626d728b4">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_RiskOfInvestingInEmergingMarketsMember"
      id="t_1229_f80789ac_4f98_0ff9_51ac_7861ff95d676"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Emerging Markets&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investments in emerging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market issuers may be subject to a greater risk of loss than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments in issuers located or operating in more developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets. Emerging markets may be more likely to experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation, social instability, political turmoil or rapid changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic conditions than more developed markets. Companies in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;many emerging markets are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries, and as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result, information about the securities&#160;in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Emerging markets often have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less reliable securities valuations and greater risk associated with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;custody of securities than developed markets. There may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant obstacles to obtaining information necessary for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investigations into or litigation against companies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders may have limited legal remedies. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;select investments based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_HighYieldSecuritiesRiskMember"
      id="t_1230_b2d586a5_38d2_1b53_8456_059937a9b190"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_CreditRisksMember"
      id="t_1231_2b6479ce_2495_4afa_2f76_014891aa6d1a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_InterestRateRisksMember"
      id="t_1232_292dfaee_47af_f76d_cfe6_e71b48db599a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_MarketRiskMember"
      id="t_1233_8de63da8_8036_a1e1_1211_3a6ed25f4fc9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_IndexRelatedRiskMember"
      id="t_1234_194bf0af_e345_f581_c2e7_1325ad4d714c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_AssetClassRiskMember"
      id="t_1235_c8a56466_5779_b09c_30f8_b0b397792cca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_AssetsUnderManagementAUMRiskMember"
      id="t_1236_d87acfde_d5a9_2880_75f9_825b454de4c7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1237_e9e29345_9842_30e9_a363_0f84e028c190"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_CallRiskMember"
      id="t_1238_e7c53a3b_cdb7_8028_e8ee_aeb5947cf6cb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_CommodityRiskMember"
      id="t_1239_db799532_cfaa_3986_2576_422f513d2bea"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commodity Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in companies that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;susceptible to fluctuations in certain commodity markets and to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price changes due to trade relations. Any negative changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity markets that may be due to changes in supply and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand for commodities, market events, war, regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, other catastrophic events, or other factors that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund cannot control could have an adverse impact on those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_ConcentrationRiskMember"
      id="t_1240_017e1b9c_0b31_37f4_1fde_549f436bb8d6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_CurrencyRiskMember"
      id="t_1241_d72053f8_9843_bd24_5a49_0a1b820670f0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_CustodyRiskMember"
      id="t_1242_54261410_7f11_3689_b865_beece1da9b00"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Custody Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Less developed securities markets are more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience problems with the clearing and settlement of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trades, as well as the custody of securities and other assets by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;local banks, agents and depositories. These issues may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund, including losses or delays in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments, delivery or recovery of money or other assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_CybersecurityRiskMember"
      id="t_1243_8129e36b_17ec_5872_05eb_d5e012305b35"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_FinancialCompaniesRiskMember"
      id="t_1244_9584cbab_5b14_dfb6_7ec8_36e3bf661395"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_IlliquidInvestmentsRiskMember"
      id="t_1245_b22bfcbd_986c_cd91_0ed0_751f440daf9a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_IncomeRiskMember"
      id="t_1246_c4dc56b3_b1f7_3542_2bd7_0c1cf63840bc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_IssuerRiskMember"
      id="t_1247_cdb80452_7322_e34f_b9a9_93f0181e9da3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_ManagementRiskMember"
      id="t_1248_887d2798_6e38_2984_89d4_6b59f8c8a186"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA and the Sub-Adviser may not produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the intended results. There is no guarantee that the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results will have a high degree of correlation to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index or that the Fund will achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_MarketTradingRiskMember"
      id="t_1249_3603921e_89f9_6681_d2a1_2c5c115cdadf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_NationalClosedMarketTradingRiskMember"
      id="t_1250_3282bed4_4828_61a2_25aa_43cfcd5b50e1"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_RiskNondiversifiedStatusMember"
      id="t_1251_a1bb4573_3502_2f39_caa1_a2c73d709a6d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_NonUSSecuritiesRiskMember"
      id="t_1252_5bd3ecf5_e7bb_ec7a_dda4_80145da6e0bb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Central &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;and South American Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Middle Eastern &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_OperationalRiskMember"
      id="t_1253_dc1cfa3d_093c_3ad6_b87d_542cb0edcd30"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_RelianceOnTradingPartnersRiskMember"
      id="t_1254_c6769b43_bc15_6528_3851_8f643733ecd6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments. Through its holdings of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of certain issuers, the Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk, Eastern European Economic Risk, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;European Economic Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;&#160;U.S. Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_RiskOfInvestingInChinaMember"
      id="t_1270_b8d0a8d0_3881_76fc_e412_0451d9998535">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000077383Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1271_5cbb514c_b0b4_11c1_1aee_a305da848bca">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_RiskOfInvestingInSaudiArabiaMember"
      id="t_1272_24f7ca65_6db2_ccfd_1f95_c45a90f485d6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Saudi Arabia&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers subjects the Fund to legal, regulatory, political, currency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, and economic risks that are specific to Saudi Arabia. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economy of Saudi Arabia is dominated by petroleum exports. A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sustained decrease in petroleum prices could have a negative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on all aspects of the economy. Investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of Saudi Arabian issuers involve risks not typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with investments in securities of issuers in more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries, which may negatively affect the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s investments. Such heightened risks may include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, the expropriation and/or nationalization of assets, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on and government intervention in international trade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;confiscatory taxation, political instability, including authoritarian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or military involvement in governmental decision-making, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;armed conflict, crime and instability as a result of religious, ethnic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or socioeconomic unrest. Instability in the Middle East region &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could adversely impact the economy of Saudi Arabia, and there is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no assurance of political stability in Saudi Arabia.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The ability of foreign investors to invest in the securities of Saudi &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arabian companies could be restricted by the Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government at any time, and unforeseen risks could materialize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to foreign ownership of such securities. There are a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;number of ways to conduct transactions in equity securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Saudi Arabian market. The Fund generally expects to transact in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;manner so that it is not limited by Saudi Arabian regulations to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;single broker. However, there may be a limited number of brokers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;who can provide services to the Fund, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the prices, quantity or timing of Fund transactions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_SecuritiesLendingRiskMember"
      id="t_1273_ca0922cc_2ce7_49ba_8e6c_5f9e694f3f07">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 9.50pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_SmallFundRiskMember"
      id="t_1274_b407a6b4_1ac3_4049_0bc0_26951c68b664">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_SovereignAndQuasiSovereignObligationsRiskMember"
      id="t_1275_d864c521_8b97_147b_1bb0_b70d7fe0236a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Sovereign and Quasi-Sovereign Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in securities issued by or guaranteed by non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign governments&#160;and by entities affiliated with or backed by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-U.S. sovereign governments, which may be unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to repay principal or interest when due. In times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic uncertainty, the prices of these securities may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatile than those of corporate debt obligations&#160;or of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government debt obligations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_TrackingErrorRiskMember"
      id="t_1276_5dd53a62_8a03_4ede_8ade_022de16a2cf1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 9.50pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000077383Member_ValuationRiskMember"
      id="t_1277_9071e6b3_a280_8449_0f22_afa17531be3f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000077383Member"
      id="t_474_7b3e15e9_6d74_4822_a6d0_21fce4f7d67b"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000077383Member"
      id="t_1219_bf3db3b7_149a_6787_8aa0_fc9016197c1e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000077383Member"
      id="t_1222_8ce68429_9a86_dc81_b374_a0f90942f6cb">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000077383Member"
      id="t_1223_6938aaec_6e1e_6061_8ef5_a794c49390ac">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000077383Member"
      id="t_1224_18512d09_b7c7_b917_662c_a6d3ac9d1542">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000077383Member"
      id="t_1225_8e5f5f5e_a360_54d7_61d5_e46af93e8afd">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000077383Member"
      id="t_1220_ffc97a96_d9b6_bcac_fb66_2f8db7f08383"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000077383Member"
      id="t_1221_80b4c539_887d_2ad4_2821_c6639ae6170f"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.11pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.11pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.45pt;"&gt;5.75%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.11pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.11pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-1.89%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000077383Member_C000237776Member"
      id="h_1210_d567bf97_4379_4ca1_a088_5d9b2139ea84">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1211_5040cf5b_9215_42aa_b77f_1be63dd6eba1"
      unitRef="pure">0.0575</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000077383Member_C000237776Member"
      id="h_1212_2719c7ac_c2bd_498a_a3de_b8ec31e4e519">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000077383Member_C000237776Member"
      id="h_1213_3a7319c5_9f9b_448d_b331_57b496131043">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1214_b93631e5_9c51_4f29_9845_ff15ee07e35c"
      unitRef="pure">-0.0189</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000077383Member_C000237776Member"
      id="h_1215_8a6b4ce6_f3e7_4ef9_ad70_ab345d98b60c">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000077383Member"
      id="t_476_cb3da930_17e2_49cd_beb1_382fd0f6de26">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000077383Member_C000237776Member"
      id="t_1264_d8e43843_760e_0799_6ec4_3c2d66ec4137">2023-02-22</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1216_baece02f_974e_4917_8afa_faa7c1ed9c0b"
      unitRef="pure">0.0633</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000077383Member_C000237776Member"
      decimals="4"
      id="h_1217_bff5a540_5693_4563_9e59_7eda83326b86"
      unitRef="pure">0.0845</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000077383Member_C000237776Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1218_69f37aa0_3f39_450b_9e8a_67fe11c02b1a"
      unitRef="pure">0.0367</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000077383Member_C000237776Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1219_73b09387_9211_481a_b465_0b9ee0a169fe"
      unitRef="pure">0.0566</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000077383Member_C000237776Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1220_489af68e_9586_4eb2_9fdd_9047238924da"
      unitRef="pure">0.0372</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000077383Member_C000237776Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1221_7612d18c_25d7_436d_9fd4_3e2dd38e0bca"
      unitRef="pure">0.0526</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000077383Member_JPMorganEMBIGlobalDiversifiedIndexMember"
      decimals="4"
      id="h_1222_f21105e1_5ccb_4f21_ac23_62c2eb200cac"
      unitRef="pure">0.0654</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000077383Member_JPMorganEMBIGlobalDiversifiedIndexMember"
      decimals="4"
      id="h_1223_461dcf6e_0323_47af_b413_466a9b07dcbe"
      unitRef="pure">0.0928</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000077383Member_JPMorganEMSovereignAndCorporateCreditCoreIndexMember"
      decimals="4"
      id="h_1224_bbb9e85e_5f5e_44d0_8cd8_c92583f658c1"
      unitRef="pure">0.0685</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000077383Member_JPMorganEMSovereignAndCorporateCreditCoreIndexMember"
      decimals="4"
      id="h_1225_76c70c3c_7205_45cf_ba8e_5403827e3405"
      unitRef="pure">0.0863</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000077383Member"
      id="t_1268_6f282dbd_fdae_a440_fa7a_d082b3d59e61"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000077383Member"
      id="t_1265_55bb7f0a_91a5_239b_f168_6eb163834cd8">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000077383Member"
      id="t_1266_3669f138_ae67_8971_ff50_1c5ba1d3049d">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000077383Member"
      id="t_1267_5aab69e5_cb52_fdea_8919_f28a9d6dc536">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000019798Member"
      id="t_1244_fc3a499d_097b_3785_d098_a698f4528b3d"> iSHARES&#xae; J.P. MORGAN USD EMERGING MARKETS BOND ETF  Ticker: EMBStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000019798Member"
      id="t_477_754380d2_ab5a_4c7e_946c_4e396c127bb4">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000019798Member"
      id="t_478_088896e4_47d9_49a3_9988_2c104495b388"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares J.P. Morgan USD Emerging Markets Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated, emerging market bonds.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000019798Member"
      id="t_479_1563ba54_89f0_47f7_9f0c_306c87d2add9">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000019798Member"
      id="t_480_9352c9a5_ccad_4cef_85d1_0e788d2a9681"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000019798Member"
      id="t_1292_655811d0_e72e_cbf7_e5a1_3e9c975dadb9">Annual Fund Operating Expenses(ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1226_cf7bbb9d_5d44_43b0_b234_7e134a319997"
      unitRef="pure">0.0039</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1227_038f9aec_3105_4b93_9bfe_856fad2ce306"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1228_27ce08f0_d804_4b0b_a671_5103bf97d2ac"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1229_76d4c63b_2301_4049_82a4_615441dba326"
      unitRef="pure">0.0039</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000019798Member"
      id="t_1290_b9fe4505_b398_0531_34bc_840b81268b92">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000019798Member"
      id="t_1291_5493965f_2931_8c47_ed24_111e1d76ffab">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000019798Member_C000055529Member"
      decimals="INF"
      id="h_1230_6d87d2c9_f85f_4554_9a7c_89871e7b81e6"
      unitRef="USD">40</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000019798Member_C000055529Member"
      decimals="INF"
      id="h_1231_78f46f1f_d2da_4095_b417_7a9513eea36e"
      unitRef="USD">125</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000019798Member_C000055529Member"
      decimals="INF"
      id="h_1232_817f498a_fb52_4079_b098_74b67d89911d"
      unitRef="USD">219</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000019798Member_C000055529Member"
      decimals="INF"
      id="h_1233_1d81fe52_ee14_413d_8b10_624bea0ead58"
      unitRef="USD">493</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000019798Member"
      id="t_1246_b1021c6e_0ee3_48ee_964c_67da48a5827d">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000019798Member"
      id="t_1247_ed9a887e_788f_0679_355f_bf5e28718f2e">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 12% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000019798Member"
      decimals="4"
      id="h_1234_cfd607a8_5601_4667_b35a_813ed89a6b5a"
      unitRef="pure">0.12</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000019798Member"
      id="t_482_18f8aaa7_79c2_43cf_a1a5_403daca3a633"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000019798Member"
      id="t_483_bec033a8_5d9e_40e7_92db_10fb37c02770"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the J.P. Morgan &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;EMBI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Global Core Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;broad, diverse U.S. dollar-denominated emerging markets debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;benchmark that tracks the total return of actively traded external &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt instruments in emerging market countries. The methodology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is designed to distribute the weight of each country within the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index by limiting the weights of countries with higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt outstanding and reallocating this excess to countries with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower debt outstanding.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index was composed of securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entities in 53 countries as of October 31, 2024. As of October 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2024, the Underlying Index&#x2019;s five highest weighted countries were &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indonesia, Mexico, Saudi Arabia, Turkey and the United Arab &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Emirates.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may change its composition and weighting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;monthly upon rebalancing. The Underlying Index includes both &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate and floating-rate instruments issued by sovereign and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;quasi-sovereign entities from index-eligible countries. Quasi-sovereign&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; entities are defined as entities that are 100% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guaranteed or 100% owned by the national government and reside &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the index-eligible country. To be considered for inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, instruments must (i) be denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, (ii) have a current face amount outstanding of $1 billion or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more, (iii) have at least 2.5 years until maturity to be eligible for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion and, at each subsequent rebalance, have at least one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year until maturity to remain in the index, (iv) be able to settle &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;internationally through Euroclear or another institution domiciled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outside the issuing country and (v) have bid and offer prices that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are available on a daily and timely basis sourced from a third party &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation vendor. As of October 31, 2024, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consisted of both investment-grade and non-investment-grade &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), each as defined by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;JPMorgan Chase &amp;amp; Co. (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;J.P. Morgan&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Convertible bonds are not eligible for inclusion in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. The Underlying Index is market value-weighted and is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced monthly on the last business day of the month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Eligible issuer countries must have (1) gross national income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;GNI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) below the Index Income Ceiling (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IIC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) for three &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;consecutive years or (2) an Index Purchasing Power Parity Ratio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IPR&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) below the emerging market IPR threshold, each as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defined by the Index Provider, for three consecutive years.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by J.P. Morgan, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000019798Member"
      id="t_1248_b8d0cdd6_1f75_5c13_1d4f_17c2b253a533"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000019798Member"
      id="t_484_72f516c2_dee0_4d05_8cbe_9d1ff9d76b6e"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000019798Member_RiskLoseMoneyMember"
      id="t_1249_552c6a74_a6b2_52ea_8eac_150c324133f6">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_SovereignAndQuasiSovereignObligationsRiskMember"
      id="t_1261_6cad9cde_797c_8916_54b9_70561705a6f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Sovereign and Quasi-Sovereign Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in securities issued by or guaranteed by non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign governments&#160;and by entities affiliated with or backed by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-U.S. sovereign governments, which may be unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to repay principal or interest when due. In times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic uncertainty, the prices of these securities may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatile than those of corporate debt obligations&#160;or of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government debt obligations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_RiskOfInvestingInEmergingMarketsMember"
      id="t_1262_c374f63c_efd6_2f32_5f45_5d30bac936df"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Emerging Markets&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investments in emerging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market issuers may be subject to a greater risk of loss than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments in issuers located or operating in more developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets. Emerging markets may be more likely to experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation, social instability, political turmoil or rapid changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic conditions than more developed markets. Companies in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;many emerging markets are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries, and as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result, information about the securities&#160;in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Emerging markets often have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less reliable securities valuations and greater risk associated with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;custody of securities than developed markets. There may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant obstacles to obtaining information necessary for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investigations into or litigation against companies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders may have limited legal remedies. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;select investments based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_CreditRisksMember"
      id="t_1263_14f53d92_d644_f8cc_5e9b_0de24a72c98e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_InterestRateRisksMember"
      id="t_1264_28b5f96c_fe0c_85f6_90f5_1cc3c0f9f853"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_MarketRiskMember"
      id="t_1265_536a75f0_58df_7fe7_002a_5e7380afa506"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_IndexRelatedRiskMember"
      id="t_1266_04e1dabc_e72a_6883_c37f_66a695224c61"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_AssetClassRiskMember"
      id="t_1267_41c7e311_51f4_1fee_5182_1799cbfa4aca"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1268_509c8dd5_4caf_b2be_4c9c_b339bc3a8fb2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_CallRiskMember"
      id="t_1269_4bb3225a_c762_b6ad_24b9_1c972a559d3e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_CommodityRiskMember"
      id="t_1270_5e69f4b6_52c8_2ec9_3345_4aaff3e0c01b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commodity Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in companies that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;susceptible to fluctuations in certain commodity markets and to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price changes due to trade relations. Any negative changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity markets that may be due to changes in supply and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand for commodities, market events, war, regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, other catastrophic events, or other factors that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund cannot control could have an adverse impact on those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_ConcentrationRiskMember"
      id="t_1271_0a8b236c_20cf_a51d_8c2c_c7bc130a86f8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_CurrencyRiskMember"
      id="t_1272_751de265_246a_c47f_1e76_377a9f07c83d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_CustodyRiskMember"
      id="t_1273_c68a7d09_4a03_7477_cc2e_454a6f4869d9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Custody Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Less developed securities markets are more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience problems with the clearing and settlement of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trades, as well as the custody of securities and other assets by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;local banks, agents and depositories. These issues may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund, including losses or delays in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments, delivery or recovery of money or other assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_CybersecurityRiskMember"
      id="t_1274_ecda4597_3458_1255_f4b6_102cb7e78407"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000019798Member_HighYieldSecuritiesRiskMember"
      id="t_1275_1bd16880_67c1_b560_3658_4e8cf477b23e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_IlliquidInvestmentsRiskMember"
      id="t_1276_db707ff0_4830_a998_4115_43d3b445ef7f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_IncomeRiskMember"
      id="t_1277_b319a7c7_bd21_d4c0_9e39_ba49a9bda79e"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_IssuerRiskMember"
      id="t_1278_e263d7a7_3b15_4146_d822_7e22d25872eb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_ManagementRiskMember"
      id="t_1279_8afff2e6_313e_10af_beaf_8b3e8600cac8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA and the Sub-Adviser may not produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the intended results. There is no guarantee that the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results will have a high degree of correlation to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index or that the Fund will achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_MarketTradingRiskMember"
      id="t_1280_a6254b35_26af_3532_7e1a_54726a5c4180"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_NationalClosedMarketTradingRiskMember"
      id="t_1281_268488a9_f0c9_1a7f_0cd7_8ed83287095f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_NonUSAgencyDebtRiskMember"
      id="t_1282_ec7caff4_d69e_dca3_54e4_b992c771ac89"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Agency Debt Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; The Fund invests in uncollateralized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds issued by agencies, subdivisions or instrumentalities of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign governments.&#160; Bonds issued by foreign government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies, subdivisions or instrumentalities are generally backed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;only by the general creditworthiness and reputation of the entity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuing the bonds and may not be backed by the full faith and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit of the foreign government.&#160; Moreover, a foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government that explicitly provides its full faith and credit to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular entity may be, due to changed circumstances, unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to provide that support. A non-U.S. agency&#x2019;s operations &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and financial condition are influenced by the foreign government&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic and other policies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_NonUSSecuritiesRiskMember"
      id="t_1294_20f552b8_56e9_e660_1cb0_35ed6e699b71">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Central and South American &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;and&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;&#160;Middle Eastern Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_OperationalRiskMember"
      id="t_1295_5f79f2e9_95cf_25f3_abc6_3338aabd0f7b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_RelianceOnTradingPartnersRiskMember"
      id="t_1296_eff2a6d5_6ea8_6470_0ce4_dbb1d25da232">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments. Through its holdings of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of certain issuers, the Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk, European Economic Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;&#160;U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_RiskOfInvestingInChinaMember"
      id="t_1297_633bf28c_d790_5bee_5355_d0fff7d0e6d6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1298_5cc37638_55df_0e83_c32c_9ab15879355f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_RiskOfInvestingInSaudiArabiaMember"
      id="t_1299_e509bd78_11bd_f1fb_0a99_e6833f7108ce">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Saudi Arabia&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers subjects the Fund to legal, regulatory, political, currency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, and economic risks that are specific to Saudi Arabia. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economy of Saudi Arabia is dominated by petroleum exports. A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sustained decrease in petroleum prices could have a negative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on all aspects of the economy. Investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of Saudi Arabian issuers involve risks not typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with investments in securities of issuers in more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries, which may negatively affect the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s investments. Such heightened risks may include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, the expropriation and/or nationalization of assets, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on and government intervention in international trade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;confiscatory taxation, political instability, including authoritarian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or military involvement in governmental decision-making, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;armed conflict, crime and instability as a result of religious, ethnic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or socioeconomic unrest. Instability in the Middle East region &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could adversely impact the economy of Saudi Arabia, and there is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no assurance of political stability in Saudi Arabia.&lt;/span&gt;&lt;/div&gt;&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The ability of foreign investors to invest in the securities of Saudi &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arabian companies could be restricted by the Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government at any time, and unforeseen risks could materialize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to foreign ownership of such securities. There are a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;number of ways to conduct transactions in equity securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Saudi Arabian market. The Fund generally expects to transact in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;manner so that it is not limited by Saudi Arabian regulations to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;single broker. However, there may be a limited number of brokers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;who can provide services to the Fund, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the prices, quantity or timing of Fund transactions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_TrackingErrorRiskMember"
      id="t_1300_99e1bba4_8981_c4f7_6b6e_201c2149c07d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000019798Member_ValuationRiskMember"
      id="t_1301_6db15b89_68fc_147c_41f2_d2dd7d4dc205">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000019798Member"
      id="t_485_629e7a33_99f3_4c5e_9ad3_a5f2b7178fe7"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000019798Member"
      id="t_1250_e08b9c5c_6172_a440_3661_5ba2c6254710"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000019798Member"
      id="t_1253_29627dce_489e_254a_a0b1_a0d7b8118da8">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000019798Member"
      id="t_1254_3a89fb58_1696_46ca_e8c1_bd04834e9e7d">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000019798Member"
      id="t_1255_0cc250f4_8345_19c2_fb7d_0dcaf8b63b26">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000019798Member"
      id="t_1256_690eabb8_fbe6_d1d6_e78c_2490f90c4369">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000019798Member"
      id="t_1251_9662d75a_9bdd_f4e7_00ae_c517024b7025"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000019798Member"
      id="t_1252_c9a07432_d214_a628_40b7_6315490d439b"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.54pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.54pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.38pt;"&gt;12.64%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 28.54pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 28.54pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-13.70%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000019798Member_C000055529Member"
      id="h_1238_6adedb9e_02bb_46a7_a6cb_2877c4989845">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1239_ae0b8529_d949_4e96_a642_7cb6ea2e0304"
      unitRef="pure">0.1264</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000019798Member_C000055529Member"
      id="h_1240_67e733e6_0e14_482a_b44a_a5bac023986d">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000019798Member_C000055529Member"
      id="h_1241_28dae46e_e4eb_414f_a775_788540cb9fc4">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1242_21613a66_3a12_4f84_92d6_da119414802d"
      unitRef="pure">-0.1370</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000019798Member_C000055529Member"
      id="h_1243_28b7306c_2fc0_4cf2_a81e_b9113e357081">2020-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000019798Member"
      id="t_487_d20a682d_0ef0_439b_a54a_2c1b501a691c">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000019798Member_C000055529Member"
      id="t_1293_22cccda8_1a8b_5572_c896_1a4704651c62">2007-12-17</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1244_fa1e139e_b27a_440b_85ed_cb8c30bd9f23"
      unitRef="pure">0.0611</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1245_49cead8f_ac8e_445e_8880_7023d27e31db"
      unitRef="pure">-0.0021</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000019798Member_C000055529Member"
      decimals="4"
      id="h_1246_a98fac97_1f34_4c59_b1fa_8912720dac04"
      unitRef="pure">0.0269</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000019798Member_C000055529Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1247_5e58a5f7_b47f_4c0f_bcbc_536933ed257f"
      unitRef="pure">0.0379</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000019798Member_C000055529Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1248_8dc234c3_3198_4c96_84f1_7f1de5b2d094"
      unitRef="pure">-0.0207</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000019798Member_C000055529Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1249_dbb3f20c_195c_4059_beee_ac5987bae496"
      unitRef="pure">0.0069</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000019798Member_C000055529Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1250_b7fb5f3c_d345_43b6_a423_18eb5c0a755e"
      unitRef="pure">0.0359</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000019798Member_C000055529Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1251_fa051f9e_29de_4823_88eb_26b46caaf435"
      unitRef="pure">-0.0095</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000019798Member_C000055529Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1252_0d7fe555_45ec_48de_9a1c_1239f19ee60e"
      unitRef="pure">0.0118</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000019798Member_JPMorganEMBIGlobalDiversifiedIndexMember"
      decimals="4"
      id="h_1253_08cd2f8a_653f_49d3_9617_82a4d31f5118"
      unitRef="pure">0.0654</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000019798Member_JPMorganEMBIGlobalDiversifiedIndexMember"
      decimals="4"
      id="h_1254_48f32e21_949d_400f_bd75_143bbda7d3af"
      unitRef="pure">0.0012</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000019798Member_JPMorganEMBIGlobalDiversifiedIndexMember"
      decimals="4"
      id="h_1255_61ebbf65_c0bb_4627_80d3_3a2604df47b4"
      unitRef="pure">0.0313</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000019798Member_JPMorganEMBIGlobalCoreIndexMember"
      decimals="4"
      id="h_1256_09acf900_abfd_4bf3_a24f_191cfb787b47"
      unitRef="pure">0.0623</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000019798Member_JPMorganEMBIGlobalCoreIndexMember"
      decimals="4"
      id="h_1257_68bf7155_d5f0_465f_8dbb_b6d6a959caca"
      unitRef="pure">-0.0009</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000019798Member_JPMorganEMBIGlobalCoreIndexMember"
      decimals="4"
      id="h_1258_73f36e26_9f85_4e85_badc_1d799069b784"
      unitRef="pure">0.0300</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000019798Member"
      id="t_1260_80850eee_0f55_d965_a24f_c829138f2d1a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000019798Member"
      id="t_1257_7bc9e6ae_dd4b_7e8c_58e5_724b5793a647">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000019798Member"
      id="t_1258_3751eb0c_def6_c3d6_3539_e0529c8e561a">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000019798Member"
      id="t_1259_2442b9f7_ee2e_056d_0083_55022ccd7fd0">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000060088Member"
      id="t_1280_4c9fbd4e_111c_67c9_87f7_c48eef0d818c"> iSHARES&#xae; U.S. FIXED INCOME BALANCED RISK SYSTEMATIC ETF  Ticker: FIBRStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000060088Member"
      id="t_488_1d103a8b_7e40_406d_a43c_32b918e08a8f">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000060088Member"
      id="t_489_ddf1e9cb_f55c_4bbd_96ae_412c9a047009"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares U.S. Fixed Income Balanced Risk Systematic ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index, composed of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable U.S. dollar-denominated bonds and U.S. Treasury futures, which targets an equal allocation between interest rate and credit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;spread risk.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000060088Member"
      id="t_490_a4093001_8254_4653_bc4a_333830206d1d">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000060088Member"
      id="t_491_131c649d_5f26_4112_8857_219b95b849f0"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other registered investment companies advised by BFA, or its affiliates, through February 28, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2029. The contractual waiver may be terminated prior to February 28, 2029 only upon written agreement of the Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000060088Member"
      id="t_1282_34daefd3_2820_04fd_02ed_f94438cf6d1e">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000060088Member"
      id="t_1283_fd289d7a_2b68_a94e_b0de_ee0e10425720">February 28, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000060088Member"
      id="t_1281_4eb97889_e239_2697_4220_38af34578a7e">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1259_1b0081e6_cf18_4c0f_91a9_cadcebc0a41d"
      unitRef="pure">0.0025</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1260_85f3a47d_ebd8_4366_b5da_9dd7ef84b236"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1261_218c4fec_b897_4b1d_af8a_5729b6f82506"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1262_2d171923_a9dd_457a_9373_77e2df28fa77"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1263_211e4d98_4a76_4df8_b30f_a9d06dd7a0d3"
      unitRef="pure">0.0025</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1264_d9b5adc4_ae26_447d_9b3e_1ba09dd633fb"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1265_8cc947c8_73cf_4195_ae93_97accd83e04a"
      unitRef="pure">0.0025</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000060088Member"
      id="t_1284_fd292e43_7e08_c97c_ea25_09835dc50b3f">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000060088Member"
      id="t_1285_fd322eda_e6f3_ee3f_34af_85df5525c5a7">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000060088Member_C000196720Member"
      decimals="INF"
      id="h_1266_574ccf66_f27f_4a52_afff_cf66b2d6ec93"
      unitRef="USD">26</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000060088Member_C000196720Member"
      decimals="INF"
      id="h_1267_0977b071_b7b4_490f_ad77_264704a213ed"
      unitRef="USD">80</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000060088Member_C000196720Member"
      decimals="INF"
      id="h_1268_2835496d_c054_4c69_9bb2_740a82e12645"
      unitRef="USD">141</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000060088Member_C000196720Member"
      decimals="INF"
      id="h_1269_e4f8714d_9cee_4d74_8049_964d24ca59af"
      unitRef="USD">318</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000060088Member"
      id="t_1334_5027ff30_0a2c_e471_ee58_aa0834168a7f">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000060088Member"
      id="t_1287_11c8c6ea_2617_592d_4777_7ff4f39572b3">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 453% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000060088Member"
      decimals="4"
      id="h_1270_c044e2a4_7bdf_4578_b5f8_e528b6eadd2c"
      unitRef="pure">4.53</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000060088Member"
      id="t_493_0a53bf6e_f705_448d_be67_1f4f47ca7fde"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000060088Member"
      id="t_494_357e2978_f270_42bd_bfa3_ab9a6b3d111e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the Bloomberg U.S. Fixed Income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Balanced Risk Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of the corporate and mortgage portion of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg U.S. Universal Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) while &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;targeting an equal allocation between interest rate and credit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;spread risk.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, approximately 84% of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index consisted of issuers organized or located in the United &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;States, and there were 7,817 issues in the Underlying Index from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers in over 16 countries or regions. The Underlying Index may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;include large-, mid- or small-capitalization companies. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, a significant portion of the Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invested in securities of companies in the financials industry or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector and mortgage-backed securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MBS&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; corporate bonds. The components of the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are likely to change over time. Securities may be registered or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;privately placed. All securities in the Underlying Index are U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar-denominated.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index uses a rules-based approach to calculate an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equal volatility-weighted allocation to each of five segments of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Parent Index: (1) investment-grade corporate bonds 1-5 year; (2) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade corporate bonds 5-10 year; (3) high yield &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;corporate bonds rated BB or higher; (4) high yield corporate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds rated below BB; and (5) U.S. agency MBS. Segments with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lower credit spread volatility receive a higher weighting in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and segments with higher credit spread &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility receive a lower weighting in the Underlying Index, with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the result that the contribution of each segment to overall credit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;spread volatility is approximately equal. Credit spread volatility &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aims to capture the volatility of the return attributable to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit quality of the security. Credit spread volatility for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade corporate securities and MBS components is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measured differently than for the Fund&#x2019;s high yield securities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;To increase overall yield and credit spread exposure, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index incorporates a leverage factor of up to 25% that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;redeploys MBS exposure, via cash pending settlement from to-be-announced&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; mortgage transactions (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), toward other index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;constituent securities. The Underlying Index further adjusts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rate risk so that it equals credit spread risk, by adding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;either long positions in U.S. Treasury bonds or short positions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury futures. The Underlying Index is rebalanced monthly.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index and TBA transactions that have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic characteristics that are substantially identical to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic characteristics of the component securities of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, and the Fund will invest at least 90% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in fixed income securities of the types included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a TBA position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for purposes of calculating investments in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index. Cash and cash equivalent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments associated with a derivative position will be treated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as part of that position for the purposes of calculating the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of investments included in the Underlying Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg Index Services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000060088Member"
      id="t_495_3d8e8778_c4a5_4558_a774_e6353aa34678"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000060088Member_RiskLoseMoneyMember"
      id="t_1288_114f910c_259b_aab9_c67c_140c1c5e6250">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_BalancingRiskExposureStrategyRiskMember"
      id="t_1300_bf91d134_d5c6_a011_3d5b_114153a04409"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Balancing Risk Exposure Strategy Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund seeks long &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to investment-grade and high-yield corporate bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long exposure to MBS and TBAs, long exposure to U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities and short exposure to U.S. Treasury futures and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;swaps, with a goal of balancing the expected contribution to risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from interest rates and credit spreads. There is no guarantee that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the interest rate risk and credit spread risk will be balanced, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the returns on the Fund&#x2019;s long or short positions will produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;high, or even positive, returns and the Fund could lose money if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;either or both the Fund&#x2019;s long and short positions produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negative returns.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_CreditSpreadRiskMember"
      id="t_1301_ee2c5f88_9996_0c24_a400_fe8709887d11"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Spread Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Credit spread risk is the risk that credit &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;spreads (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, the difference in yield between securities that have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differences in credit quality or other factors) may increase, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may reduce the market values of the Fund's securities. &#160;While the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund may employ strategies to mitigate credit spread risk, these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategies may not be successful.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_InterestRateRisksMember"
      id="t_1302_abfd35f6_d4e3_4c9a_7c9d_e425724a2d72"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_MarketRiskMember"
      id="t_1303_0a86dace_b6bd_0234_0500_7811df5f21c3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_IndexRelatedRiskMember"
      id="t_1304_8cffdbf2_ce12_ff6d_0af7_f501fc2819d4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_AssetClassRiskMember"
      id="t_1305_2a23f034_081c_d1f0_83b6_791a1aa92bb0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1306_9631af3b_3f69_70a4_b585_0cc587d620f0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_CallRiskMember"
      id="t_1307_37e27897_2a81_b8ef_1895_f2d9b79b6704"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000060088Member_ConcentrationRiskMember"
      id="t_1308_a71c3f4c_4a0c_4d24_76cf_bacd9bf21a58"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_CreditRisksMember"
      id="t_1309_a9ab31b3_2554_a88c_b287_31769238eb31"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_CybersecurityRiskMember"
      id="t_1310_1d7e3d91_b7cb_9760_57ba_edbc147a67a8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_DerivativesRisksMember"
      id="t_1311_7e9bbd9e_e823_1a40_eda0_bf347da197f7"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s use of derivatives (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., futures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;forwards, swaps, options) may be riskier than other types of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments and may not have the intended effect on the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. Derivatives can be sensitive to changes in economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and market conditions, and they may increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility. The Fund also may experience reduced returns as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result of transaction costs and losses on derivatives positions. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is the risk of imperfect correlation between the value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative and that of the asset underlying the derivative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives may create investment leverage, which could result in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;losses that significantly exceed the Fund&#x2019;s original investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Derivatives are subject to the risk of mispricing or improper &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valuation, particularly if there is not a liquid secondary market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the instrument. Certain derivatives are subject to counterparty &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risk, which is the risk that the other party in the transaction will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not fulfill its contractual obligations. The use of derivatives also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposes the Fund to additional operational and legal risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_ExtensionRiskMember"
      id="t_1312_23734879_735c_562b_8949_f60e439fb0b0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s income and potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the value of the Fund&#x2019;s investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_FinancialCompaniesRiskMember"
      id="t_1313_5af4f675_bfb6_81ec_7377_c01c5ed30c66"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Financial Companies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Financial services companies are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to extensive governmental regulation and intervention, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may adversely affect their profitability, the scope of their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;activities, the prices they can charge, the amount of capital and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquid assets they must maintain and their size, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;things. Financial services companies also may be significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affected by, among other things, interest rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions, volatility in financial markets, credit rating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;downgrades, adverse public perception, exposure concentration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and counterparty risk.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_HedgingRiskMember"
      id="t_1314_693aa0b4_308a_260c_6c67_0c0e57b27842"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Hedging Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund seeks to mitigate the potential impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates on the performance of bonds by entering into short &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;positions in U.S. Treasury futures&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or similar positions through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions in interest rate swaps. The Fund&#x2019;s short positions&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury futures&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and interest rate swaps are not intended to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mitigate credit spread risk or other factors influencing the price of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, which may have a greater impact than interest rates. There &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is no guarantee that the Fund&#x2019;s short positions will completely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eliminate the interest rate risk of the long positions in bonds. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, when interest rates fall, long&#x2013;only bond investments will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;perform better than the Fund&#x2019;s investments. In certain falling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rate environments, the Fund&#x2019;s hedging strategy could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in disproportionately larger losses in the short&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;futures&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and interest rate swaps positions as compared to gains in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the long bond positions attributable to interest rate changes. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee the Fund will have positive returns, even in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;environments of sharply rising&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury interest rates in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s short positions might be expected to mitigate the effects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of such rises. The Fund will incur expenses when entering into &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short positions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_HighPortfolioTurnoverRiskMember"
      id="t_1315_b83241f9_3aa0_2e35_9afa_b202d29a671b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Portfolio Turnover Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; High portfolio turnover is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered by the Fund to mean turnover of greater than 100% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;annually. Portfolio turnover (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the sale of securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets and reinvestment in other securities or assets) generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves transaction costs to the Fund, including brokerage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commissions, dealer mark-ups and other costs. In addition, the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale of securities by the Fund may result in the realization of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable capital gains, including short-term capital gains. Higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio turnover may cause the Fund to incur additional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transaction costs, which have the effect of reducing the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment return, and may result in different tax consequences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for shareholders compared to a fund with lower portfolio turnover.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_HighYieldSecuritiesRiskMember"
      id="t_1316_423c1291_32db_101c_0d65_607298fc76db"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Yield Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Securities that are rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (commonly referred to as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;junk bonds,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may include those bonds rated below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BBB-&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by S&amp;amp;P Global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Ratings and Fitch Ratings, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fitch&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) or below &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Baa3&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's Investors Service, Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Moody's&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), or are unrated, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be deemed speculative, may involve greater levels of risk than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;higher-rated securities of similar maturity and may be more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to default.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_IlliquidInvestmentsRiskMember"
      id="t_1317_7b930934_b37f_afcc_7188_475405379f60"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_IncomeRiskMember"
      id="t_1318_a517b4da_a70a_0b63_d969_663c9981a9a5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_IssuerRiskMember"
      id="t_1319_57128f84_f9fe_6d96_89ba_7b7a7d522095"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1320_cffee4e8_ae9b_8b0a_ae7b_496097428a54"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_ManagementRiskMember"
      id="t_1321_6e093888_b742_47a6_c875_d9e3485a3168"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_MarketTradingRiskMember"
      id="t_1322_f2402415_abd9_43e9_2d47_eccc0acbc269"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_OperationalRiskMember"
      id="t_1323_47fbb419_9252_a45f_42f7_e7f56ef2aeff"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_PrepaymentRisksMember"
      id="t_1324_20bde96d_f40d_379c_fb98_be2da68590a3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Prepayment Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During periods of falling interest rates, issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of certain debt obligations may repay principal prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security&#x2019;s maturity, which may cause the Fund to have to reinvest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in securities with lower yields or higher risk of default, resulting in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a decline in the Fund&#x2019;s income or return potential.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_1325_a95897c8_0ce0_79c5_0241_d9e0e82c35d8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_RiskOfInvestingInChinaMember"
      id="t_1326_04d6102a_6d88_34ec_bde6_b4bf8566d588"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1335_d1c6c01c_0a9d_fd84_83c1_b87147154683"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_RiskOfInvestingInTheUSMember"
      id="t_1336_cf066d4a_a5c9_405f_bc50_da5a82eae57d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_SecuritiesLendingRiskMember"
      id="t_1337_dc6d56f3_a74c_4eab_0ab9_df9e5e86f549"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_TrackingErrorRiskMember"
      id="t_1338_af983e4a_cab1_cb53_1862_1efef184769a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes. A Fund that tracks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an index where high yield securities are an investment focus may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than ETFs that do not track such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;indexes. Because the fundamental policies of the Fund do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provide for the Fund to concentrate holdings in accordance with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the concentrations included in the Underlying Index, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience higher tracking error than other index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_USAgencyMortgageBackedSecuritiesRiskMember"
      id="t_1339_d96e7097_aa22_b387_a757_558be51c46c3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Agency Mortgage-Backed Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in &#160;MBS issued or guaranteed by the U.S. government or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;one of its agencies or sponsored entities, some of which may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be backed by the full faith and credit of the U.S. government. MBS &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;represent interests in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pools&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; of mortgages and are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rate, prepayment, and extension risk. MBS react &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differently to changes in interest rates than other bonds, and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prices of MBS may reflect adverse economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions. Small movements in interest rates (both increases and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decreases) may quickly and significantly reduce the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain MBS. MBS are also subject to the risk of default on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underlying mortgage loans, particularly during periods of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic downturn. Default or bankruptcy of a counterparty to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TBA transaction would expose the Fund to possible losses.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_USGovernmentIssuersRiskMember"
      id="t_1340_58ea9e39_829e_352c_6ab9_3c223345c9cb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Government Issuers Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Obligations of U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agencies and authorities are supported by varying degrees of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;credit, but generally are not backed by the full faith and credit of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government. Similar to other issuers, changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial condition or credit rating of the U.S. government or U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government agencies and authorities may cause the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's investments to decline.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000060088Member_ValuationRiskMember"
      id="t_1341_2ff00d51_dded_6303_fb7b_b0b3b8553220"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000060088Member"
      id="t_496_03364778_35e2_4855_981f_278b11500991"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000060088Member"
      id="t_1289_73680891_8be8_bc96_72b9_12383d8d3868"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is continuing the operations of a series of iShares U.S. ETF Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Predecessor Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Before the Fund commenced &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;operations, all of the assets and liabilities of the Predecessor Fund were transferred to the Fund in a reorganization (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Reorganization&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which was tax-free for U.S. federal income tax purposes. The Reorganization occurred on February 5, 2018. As a result of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Reorganization, the Fund assumed the performance and accounting history of the Predecessor Fund, which did not seek to track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results of an index but was managed by BFA using an investment strategy substantially similar to the methodology of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. The performance information below is based on the performance of the Predecessor Fund for periods prior to the date of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Reorganization.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information, including the Fund&#x2019;s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000060088Member"
      id="t_1292_41d6fc43_1aa1_d295_cd76_f0ef0886de46">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000060088Member"
      id="t_1294_eb2ff220_7f2b_3983_9e57_532f69e82d4f">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000060088Member"
      id="t_1293_5c4aed93_dc6a_cafb_8a34_92cc1701af66">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000060088Member"
      id="t_1333_33b3ad5b_bf50_388b_6d5e_444bd2455e40">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000060088Member"
      id="t_1290_c807a389_9bd5_e126_de40_71ad2bda02b7"> Calendar Year-by-Year Returns &#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000060088Member"
      id="t_1291_d89c62bd_576d_48f5_fb84_d58083b09445"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.9pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.9pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.29pt;"&gt;6.05%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.9pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.9pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-6.86%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000060088Member_C000196720Member"
      id="h_1274_4d684340_c737_4364_b0e9_97df509a6f73">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1275_cc3062c2_969e_4d86_81bb_254aa73772fe"
      unitRef="pure">0.0605</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000060088Member_C000196720Member"
      id="h_1276_68a36487_c5aa_48d2_8264_034704f922b9">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000060088Member_C000196720Member"
      id="h_1277_f17b74a6_39bf_40af_9319_6cb74cae3178">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1278_bb8f440b_24d3_413c_bf80_b072edd77e1b"
      unitRef="pure">-0.0686</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000060088Member_C000196720Member"
      id="h_1279_9e28745f_e81d_439c_a742_325ee290e43a">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000060088Member"
      id="t_498_8db1b87e_089f_4584_954f_f110540f241c">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000060088Member_C000196720Member"
      id="t_1299_7372cd26_918f_c185_6458_905b14c9803e">2015-02-24</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1280_630d7113_fbc4_4e4f_a9d1_3b9dde3bef2c"
      unitRef="pure">0.0600</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1281_7a80f441_7cde_4152_8ece_489a8c432ce4"
      unitRef="pure">0.0028</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000060088Member_C000196720Member"
      decimals="4"
      id="h_1282_c2aa2cdb_5371_4b72_97df_66a0b7b69920"
      unitRef="pure">0.0189</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000060088Member_C000196720Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1283_daa5cba4_c9f3_4a44_aa94_7748eff9bfdc"
      unitRef="pure">0.0383</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000060088Member_C000196720Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1284_b3b76820_26c0_424d_b666_e164a05770d5"
      unitRef="pure">-0.0112</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000060088Member_C000196720Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1285_c8bf5e97_086f_494c_80c0_fa3c91dd7582"
      unitRef="pure">0.0053</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000060088Member_C000196720Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1286_ab599a8d_7cf0_43b6_92a5_85fb0366dcad"
      unitRef="pure">0.0351</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000060088Member_C000196720Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1287_a8584a61_a1e8_45a7_8801_38668b55a01a"
      unitRef="pure">-0.0039</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000060088Member_C000196720Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1288_522d0b1a_f640_425c_a884_9865ff4c1062"
      unitRef="pure">0.0085</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000060088Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1289_3fca4af0_fb85_4585_a21a_72a67650d982"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000060088Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1290_b09267be_8adc_41f8_91ab_190122f85042"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000060088Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1291_d442e228_f971_4738_929b_b70a02db21c0"
      unitRef="pure">0.0163</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000060088Member_BloombergUSFixedIncomeBalancedRiskIndexMember"
      decimals="4"
      id="h_1292_534c8881_9508_4f04_ae5f_2e1b09b203cb"
      unitRef="pure">0.0595</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000060088Member_BloombergUSFixedIncomeBalancedRiskIndexMember"
      decimals="4"
      id="h_1293_21a69698_4243_4a1f_a63e_e9116daa8bcd"
      unitRef="pure">0.0044</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000060088Member_BloombergUSFixedIncomeBalancedRiskIndexMember"
      decimals="4"
      id="h_1294_cf7cc406_3514_4382_8187_ac37fd9b7428"
      unitRef="pure">0.0168</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000060088Member"
      id="t_1295_52e392d0_81b4_8f19_26c0_46eda9bb3861"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000060088Member"
      id="t_1296_9fcf9efd_0207_3c49_3fb6_8171ca906350">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000060088Member"
      id="t_1297_69a9b438_a523_56e1_31ad_2d95a8f9ce84">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000060088Member"
      id="t_1298_b6f11780_6e9b_af3d_5b59_997fdb7e1b1c">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000063466Member"
      id="t_1313_e1209bf1_67e2_6a67_d1e8_480c7e24e6af"> iSHARES&#xae; USD GREEN BOND ETF  Ticker: BGRNStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000063466Member"
      id="t_499_9b7ba84c_98fa_4e69_ae29_7242b7404bda">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000063466Member"
      id="t_500_176bb0c6_9ddf_4e12_b4db_7dcb3083cfc2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares USD Green Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. dollar-denominated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade green bonds that are issued by U.S. and non-U.S. issuers to fund environmental projects.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000063466Member"
      id="t_501_9609608f_968b_4c71_8ae8_f411d8157ee2">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000063466Member"
      id="t_502_9c75d48b_bcf7_48e2_bfc3_3d5830cbc2c6"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000063466Member"
      id="t_1314_20af497e_762a_734a_a96e_2a40e15c9096">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1295_dd4461d1_14ca_43db_b77f_a102977c95c5"
      unitRef="pure">0.0020</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1296_b37ace07_e477_4543_a366_66a7f8fed80f"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1297_3bba613b_c038_43db_9518_c5af083aa61c"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1298_a3e48f49_ee2c_4ede_8fce_aa1dd5cacd4c"
      unitRef="pure">0.0020</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000063466Member"
      id="t_1315_61ead965_bb33_d8b2_88fd_fd1dbde571e5">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000063466Member"
      id="t_1316_a9aa6112_706b_3f06_5b39_c16a02b49777">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000063466Member_C000205645Member"
      decimals="INF"
      id="h_1299_0762c786_199c_4cc5_bbe2_9a792ecc1d88"
      unitRef="USD">20</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000063466Member_C000205645Member"
      decimals="INF"
      id="h_1300_88419197_40e8_493e_a22f_3ae336097fa6"
      unitRef="USD">64</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000063466Member_C000205645Member"
      decimals="INF"
      id="h_1301_3435324a_ffa3_44d6_b6c2_7ebe04be6a36"
      unitRef="USD">113</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000063466Member_C000205645Member"
      decimals="INF"
      id="h_1302_6bf7de85_fc87_4d79_8183_2bf6ac8884b7"
      unitRef="USD">255</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000063466Member"
      id="t_1317_604e2a67_4825_424f_a01e_717eb2daef4d">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000063466Member"
      id="t_1318_55b39c4e_2355_8839_aff5_b7a50a18fbfe">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 21% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000063466Member"
      decimals="4"
      id="h_1303_8fc713c8_ed23_4461_9696_d1da7f22b36e"
      unitRef="pure">0.21</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000063466Member"
      id="t_504_bf0e2540_c841_475f_a0f3_7cd9d4ec3cb3"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000063466Member"
      id="t_505_11c6ffbb_0c7c_4352_a9e8_b7be498f75c8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MSCI USD Green Bond Select Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which measures the performance of U.S. dollar-denominated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (as determined by Bloomberg Index Services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Limited, a subsidiary of Bloomberg Finance L.P. and its affiliates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)) green bonds issued by U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and non-U.S. issuers to fund projects with direct environmental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;benefits.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Green bonds are fixed income securities whose proceeds are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exclusively applied to projects or activities that promote climate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or other environmental sustainability purposes. For inclusion in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, securities are independently evaluated by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MSCI ESG Research LLC (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;MSCI ESG Research&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), pursuant to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreement between MSCI ESG Research and the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or an affiliate), based on four criteria aligned with themes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;articulated in the Green Bond Principles, which are published by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the International Capital Market Association (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Green Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principles&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The first criterion is whether the use of proceeds falls &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;within at least one of six eligible environmental categories defined &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by MSCI ESG Research: alternative energy, energy efficiency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pollution prevention and control, sustainable water, green building &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and climate adaption. Other environmental activities that do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fit into these categories (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., sustainable forestry) may also be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;candidates for inclusion based on evaluations by MSCI ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Research. The remaining three criteria for evaluation and inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index are processes for green project evaluation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and selection, processes for the management of proceeds and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commitment to ongoing reporting of the environmental impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the use of proceeds. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Self-labeled green bonds are evaluated for potential inclusion in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index using the four criteria. Meeting all four &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;criteria is required for bonds issued after the publication of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Green Bond Principles in January 2014. Self-labeled green bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued prior to 2014 may still qualify for the Underlying Index so &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as they meet the use of proceeds criterion, since no formal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guidelines were available at the time of issuance. General purpose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds from issuers that are considered by the Index Provider to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be a pure-play green company (defined as a legal entity with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater than 90% of activities, as measured by revenues, within &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;one or more of the eligible environmental categories) must meet &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;all four criteria to be eligible.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes sovereign and government-related &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt, corporate bonds and securitized bonds denominated in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars from both developed and emerging market issuers. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, the Underlying Index was composed of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;approximately 354 securities issued by entities in the following 26 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries or regions as well as securities issued or guaranteed by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;supranational entities: Brazil, Chile, China, Denmark, France, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Germany, Hong Kong, Hungary, India, Indonesia, Ireland, Israel, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Japan, Kuwait, Mexico, the Netherlands, Norway, Peru, Portugal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qatar, Saudi Arabia, Singapore, South Korea, Sweden, the United &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arab Emirates and the U.S.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of October 31, 2024, a significant portion of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index is represented by utilities and sovereign and quasi-sovereign&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities. The components of the Underlying Index are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likely to change over time. Eligible securities include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, fixed-rate coupon bonds; bonds that convert from fixed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;floating rate (including fixed-to-float perpetuals); senior and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subordinated securities; fixed-rate bullet, putable, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sinkable/amortizing and callable bonds; taxable municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities; original issue zero coupon bonds; certificates of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deposit; loan participation notes; and U.S. agency commercial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mortgage-backed securities. Fixed-to-floating rate bonds are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;eligible during their fixed-rate term only. Certain types of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities are excluded from the Underlying Index, including, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;among others, contingent capital securities, bonds with equity-type&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; features (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., warrants, convertibles and preferreds), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation-linked bonds, floating-rate issues, fixed-rate perpetuals, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax-exempt municipal securities, private placements (other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;those offered pursuant to Rule 144A or Regulation S promulgated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;under the Securities Act of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;retail bonds and structured notes. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index does not have a one-year minimum time to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity requirement and holds bonds until final maturity. As of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 31, 2024, the weighted average duration of the securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index was 5.13 years, and the weighted &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;average maturity of the securities in the Underlying Index was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;7.47 years. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are weighted using an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer capping methodology that sets a 23.75% cap on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate weight of all large issuers, which are defined by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider as individually having at least 4.75% of the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the uncapped index. Small issuers, defined as individually &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;having less than 4.75% of the market value of the uncapped index, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are individually capped at 4.75% of the Underlying Index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;excess market value over the caps is redistributed on a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;basis to all other issuers&#x2019; bonds that are under the caps until &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no limits are breached. This methodology is applied at each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, which occurs on the last business day of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments comprising an applicable underlying index. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities selected are expected to have, in the aggregate, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment characteristics (based on factors such as market value &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and industry weightings), fundamental characteristics (such as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return variability, duration (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change in interest rates), maturity or credit ratings and yield) and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liquidity measures similar to those of an applicable underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index. The Fund may or may not hold all of the securities and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other components of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index as well as in fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income securities other than the types included in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, but which BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg, MSCI ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Research, or their affiliates, which are&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA. The Index Provider determines the composition and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relative weightings of the securities in the Underlying Index and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publishes information regarding the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000063466Member"
      id="t_1319_b39c3374_cc5d_b1b0_18d6_11833b330bd2"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000063466Member"
      id="t_506_7e47f0ee_48bb_444d_adec_34c99e970f10"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000063466Member_RiskLoseMoneyMember"
      id="t_1320_645f05e5_1a73_5f4c_8cfb_de2b3247f146">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_GreenBondInvestmentStrategyRiskMember"
      id="t_1332_634f888e_ebb4_c10d_ab9a_ed18baf4ab4c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Green Bond Investment Strategy Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund&#x2019;s investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy of investing in green bonds limits the types and number &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of investment opportunities available to the Fund and, as a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund may underperform other funds that do not have a green &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond focus. The Fund&#x2019;s green bond investment strategy may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the Fund investing in securities or industry sectors that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform the market as a whole or underperform other funds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with a green bond focus. In addition, projects funded by green &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds selected by the Index Provider may not result in direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;environmental benefits. Projects funded by green bonds also may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be dependent on government tax incentives and subsidies and on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;political support for certain environmental technologies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies. Green bond issuers may face increased government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;scrutiny and may be subject to new regulations, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;enhanced disclosure requirements.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_CreditRisksMember"
      id="t_1333_7b83a291_bc6f_6617_b9e6_89f989b4f152"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_InterestRateRisksMember"
      id="t_1334_02c6943c_527f_ff4e_b966_5b31d6633e63"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_MarketRiskMember"
      id="t_1335_c8a06bb3_ba38_73f1_0470_9ad56fb9c35a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_IndexRelatedRiskMember"
      id="t_1336_df03a2d9_0886_5ced_01bf_45ee3169ea80"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_AssetClassRiskMember"
      id="t_1337_97355043_1dd8_1277_4768_518777e7aef4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1338_8641c458_b891_612d_f856_14e071dd872f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_CallRiskMember"
      id="t_1339_5fcb2fa5_41a0_9fd0_0296_08d60ea078b7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_CommodityRiskMember"
      id="t_1340_cd92b7de_2db1_ebab_f235_9b3406e03abb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Commodity Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in companies that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;susceptible to fluctuations in certain commodity markets and to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price changes due to trade relations. Any negative changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commodity markets that may be due to changes in supply and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand for commodities, market events, war, regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developments, other catastrophic events, or other factors that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund cannot control could have an adverse impact on those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_ConcentrationRiskMember"
      id="t_1341_8d06bfb5_111d_f684_e520_81c885e42622"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_CurrencyRiskMember"
      id="t_1342_e63e330c_1085_5fb8_7996_b3dd9ac221d9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Currency Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Because the Fund&#x2019;s NAV is determined in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars, the NAV could decline if the currency of the non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market in which the Fund invests depreciates against the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollar or if there are delays or limits on the repatriation of foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency. Currency exchange rates can be very volatile and can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;change quickly and unpredictably. As a result, the Fund&#x2019;s NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may change quickly and without warning. In addition, the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur costs in connection with conversions between U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dollars and foreign currencies.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_CustodyRiskMember"
      id="t_1343_d8682e86_11de_4e9e_71c4_557791b59aa3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Custody Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Less developed securities markets are more likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience problems with the clearing and settlement of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trades, as well as the custody of securities and other assets by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;local banks, agents and depositories. These issues may have an &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund, including losses or delays in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments, delivery or recovery of money or other assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_CybersecurityRiskMember"
      id="t_1344_33a35c7a_9fb9_7a21_3c95_ad5445972525"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_ESGRiskMember"
      id="t_1345_dbda8686_9220_686a_1488_0d8dc50b8ff4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;ESG Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;To the extent that the Underlying Index uses criteria &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;related to the ESG characteristics of issuers, this may limit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;types and number of investment opportunities available to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and, as a result, the Fund may underperform other funds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;whose underlying index does not use ESG criteria. The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&#x2019;s use of ESG criteria may result in the Fund investing in, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;allocating greater weight to, securities or market sectors that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform the market as a whole or underperform other funds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that use ESG criteria. In addition, the use of representative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sampling may result in divergence of the Fund&#x2019;s overall ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;characteristics or ESG risk from those of the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may evaluate security-level ESG data and, if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable, ESG objectives or constraints that are relevant to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index only at index reviews or rebalances. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index may cease to meet the relevant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ESG criteria but may nevertheless remain in the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and the Fund until the next review or rebalance by the Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider. As a result, certain securities in the Underlying Index, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index as a whole, may not meet the relevant ESG &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objectives or constraints at all times.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_ExtensionRiskMember"
      id="t_1346_a456009c_b378_8dd9_6f6a_0719eef8f088"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Extension Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of rising interest rates, certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;debt obligations may be paid off substantially more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;originally anticipated and the value of those securities may fall &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sharply, resulting in a decline in the Fund&#x2019;s income and potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the value of the Fund&#x2019;s investments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_IlliquidInvestmentsRiskMember"
      id="t_1347_7864f7bf_b9cf_78f2_535d_430e1009fc72"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_IncomeRiskMember"
      id="t_1348_a1639af1_9098_cfdb_e91b_ed3d3095fca4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_IssuerRiskMember"
      id="t_1349_3e4ae85e_58c8_90a5_b551_7af303fcc1ec"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_ManagementRiskMember"
      id="t_1350_0fecf2f6_15ee_14e8_8173_dc5a2b20f7cb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA and the Sub-Adviser may not produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the intended results. There is no guarantee that the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment results will have a high degree of correlation to those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index or that the Fund will achieve its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_MarketTradingRiskMember"
      id="t_1351_10fa6e61_7fa2_7b14_ea82_129e4b3681e6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_NationalClosedMarketTradingRiskMember"
      id="t_1352_e624373c_4529_f7f0_dee2_5883e3b46129"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;National Closed Market Trading Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; To the extent that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets held by the Fund trade on foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exchanges or in foreign markets that may be closed when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities exchange on which the Fund&#x2019;s shares trade is open, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there are likely to be deviations between such asset&#x2019;s current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price and its last quoted price (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the quote from the closed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market to the Fund).&#x2009;The impact of a closed foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market on the Fund is likely to be greater where a large portion of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund&#x2019;s holdings trade on a closed foreign market or when a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;foreign market is closed for unscheduled reasons. These &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;deviations could result in premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV that may be greater than those experienced by other funds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_NonUSSecuritiesRiskMember"
      id="t_1353_e365f6c9_4a1e_490f_8e71_e2b729146dbb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-U.S. Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities issued by non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including depositary receipts) are subject to different legal, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory, political, economic, and market risks than securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issued by U.S. issuers. These risks include greater market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatility, less market liquidity, higher transaction costs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expropriation, confiscatory taxation, adverse changes in foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment or currency control regulations, restrictions on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;repatriation of capital, and political instability. Non-U.S. issuers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be subject to different accounting, audit and financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reporting standards than U.S. issuers, and there may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;publicly available information about non-U.S. issuers. Foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market trading hours, different clearing and settlement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;procedures, and holiday schedules may limit the Fund's ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;engage in portfolio transactions. To the extent that investments &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are made in a limited number of countries, events in those &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;countries will have a more significant impact on the Fund. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_OperationalRiskMember"
      id="t_1354_c669310a_df75_ba4c_c8f0_b40183a1fe1b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_PrivatelyIssuedSecuritiesRiskMember"
      id="t_1355_9ff23859_cb25_b07e_2d14_b8bd1ad7bcf4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Privately Issued Securities Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Privately issued securities are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have not been registered under the Securities Act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of 1933, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1933 Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Such securities typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are subject to legal restrictions on resale and generally are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;traded in established public markets. As a result, privately issued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be deemed to be illiquid investments, may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;difficult to value than publicly traded securities, may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;wide fluctuations in value and may have higher transaction costs. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There can be no assurance that a trading market will exist at any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;time for any particular privately issued security. Difficulty in selling &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such securities at a desirable time or price may result in a loss to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_RelianceOnTradingPartnersRiskMember"
      id="t_1356_e8f15522_bbff_93e6_acaf_ab4d9868c324"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Reliance on Trading Partners Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund invests in countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or regions whose economies are heavily dependent upon trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with key partners. Any reduction in this trading may have an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adverse impact on the Fund's investments. Through its holdings of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of certain issuers, the Fund is specifically exposed to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Asian Economic Risk, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;European Economic Risk and North &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;American Economic Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_RiskOfInvestingInChinaMember"
      id="t_1368_dc2ab085_1831_ba20_9645_477e11f99b2e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investments in Chinese securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including certain Hong Kong-listed and U.S.-listed securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject the Fund to risks specific to China. China may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to considerable degrees of economic, political and social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instability. China is an emerging market and demonstrates &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly higher volatility from time to time in comparison to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed markets. Over the last few decades, the Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government has undertaken reform of economic and market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;practices and has expanded the sphere of private ownership of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;property in China. However, Chinese markets generally continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to experience inefficiency, volatility and pricing anomalies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting from governmental influence, a lack of publicly available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information and/or political and social instability. Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies are also subject to the risk that Chinese authorities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;can intervene in their operations and structure. Internal social &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unrest or confrontations with neighboring countries, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;military conflicts in response to such events, may also disrupt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic development in China and result in a greater risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;currency fluctuations, currency non-convertibility, interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations and higher rates of inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China has experienced security concerns, such as terrorism&#160;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Additionally, China is alleged to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have participated in state-sponsored cyberattacks against foreign &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies and foreign governments. Actual and threatened &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;responses to such activity and strained international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including purchasing restrictions, sanctions, tariffs or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cyberattacks on the Chinese government or Chinese companies, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may impact China&#x2019;s economy and Chinese issuers of securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which the Fund invests. Incidents involving China's or the region's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security may cause uncertainty in Chinese markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect the Chinese economy and the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments. Export growth continues to be a major driver of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China's rapid economic growth. Reduction in spending on Chinese &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;products and services, supply chain diversification, institution of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional tariffs or other trade barriers (including as a result of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;heightened trade tensions or a trade war between China and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. or in response to actual or alleged Chinese cyber activity) or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a downturn in any of the economies of China's key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners may have an adverse impact on the Chinese economy. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index may include companies that are subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic or trade restrictions (but not investment restrictions) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;imposed by the U.S. or other governments due to national &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, human rights or other concerns of such government. So &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;long as these restrictions do not include restrictions on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments, the Fund is generally expected to invest in such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;companies, consistent with its objective to track the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Chinese companies, including Chinese companies that are listed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on U.S. exchanges, are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information about Chinese securities in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Chinese companies with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities listed on U.S. exchanges may be delisted if they do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet U.S. accounting standards and auditor oversight &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;requirements, which would significantly decrease the liquidity and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the securities. There may be significant obstacles to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obtaining information necessary for investigations into or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;litigation against Chinese companies, and investors may have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limited legal remedies. The Fund does not select investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_RiskOfInvestingInTheChinaBondMarketMember"
      id="t_1369_0d2e1ac5_dabb_c4d0_f86c_b636b4498c47"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the China Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;. The Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;directly in the domestic bond market in the People&#x2019;s Republic of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;PRC&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;China Interbank Bond Market&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through the Bond Connect trading channel. All bonds traded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect are registered in the name of the PRC&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Central Moneymarkets Unit (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CMU&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which holds such bonds as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;nominee owner. The precise nature and rights of the Fund as the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beneficial owner of bonds traded in the China Interbank Bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market through CMU as nominee are relatively new and untested &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;areas of PRC law, and the exact nature of the Fund&#x2019;s remedies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and methods of enforcement of its rights and interests under PRC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;law are uncertain.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Market volatility and potential lack of liquidity due to low trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volume of certain bonds in the China Interbank Bond Market may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result in the prices of certain bonds fluctuating significantly. Also, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the systems used to trade through Bond Connect may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;function as expected. Trading through Bond Connect is also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to regulatory risks, including laws and regulations that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to change. There can be no assurance that Bond Connect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or its features or systems will not be materially altered, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;suspended, discontinued or abolished. The Fund may be subject &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to additional taxation if certain tax exemptions under PRC tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations are withdrawn or amended. Any taxes arising from or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the Fund may be directly borne by, or indirectly passed on to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund, which may substantially impact its NAV. Investing &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;through Bond Connect subjects the Fund to currency risk, to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;extent that currency rates used for Bond Connect are different &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the rates used in the China Interbank Bond Market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063466Member_RiskOfInvestingInDevelopedCountriesMember"
      id="t_1370_d1b98f9b_63c4_f588_b571_540749d4e9e5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Developed Countries&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in&#160;&#160;developed country issuers will subject the Fund to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legal, regulatory, political, currency, security, economic and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks associated with developed countries. Developed countries &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tend to represent a significant portion of the global economy and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have generally experienced slower economic growth than some &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less developed countries. Certain developed countries have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experienced security concerns, such as war, terrorism and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strained international relations. Incidents involving a country&#x2019;s or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;region&#x2019;s security may cause uncertainty in its markets and may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adversely affect its economy and the Fund&#x2019;s investments. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, developed countries may be adversely impacted by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes to the economic conditions of certain key trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;partners, regulatory burdens, debt burdens and the price or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;availability of certain commodities.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_RiskOfInvestingInEmergingMarketsMember"
      id="t_1371_407c9cd8_78c8_a8b9_7c4d_3aebc3711617"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Emerging Markets&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investments in emerging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market issuers may be subject to a greater risk of loss than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments in issuers located or operating in more developed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets. Emerging markets may be more likely to experience &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation, social instability, political turmoil or rapid changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic conditions than more developed markets. Companies in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;many emerging markets are not subject to the same degree of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulatory requirements, accounting standards or auditor &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;oversight as companies in more developed countries, and as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;result, information about the securities&#160;in which the Fund invests &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be less reliable or complete. Emerging markets often have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less reliable securities valuations and greater risk associated with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;custody of securities than developed markets. There may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant obstacles to obtaining information necessary for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investigations into or litigation against companies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders may have limited legal remedies. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;select investments based on investor protection considerations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_RiskOfInvestingInSaudiArabiaMember"
      id="t_1372_ec35a30b_a578_2697_8800_1bb11c2ac290"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in Saudi Arabia&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers subjects the Fund to legal, regulatory, political, currency, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;security, and economic risks that are specific to Saudi Arabia. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economy of Saudi Arabia is dominated by petroleum exports. A &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sustained decrease in petroleum prices could have a negative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on all aspects of the economy. Investments in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of Saudi Arabian issuers involve risks not typically &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with investments in securities of issuers in more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;developed countries, which may negatively affect the value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&#x2019;s investments. Such heightened risks may include, among &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;others, the expropriation and/or nationalization of assets, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on and government intervention in international trade, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;confiscatory taxation, political instability, including authoritarian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or military involvement in governmental decision-making, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;armed conflict, crime and instability as a result of religious, ethnic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and/or socioeconomic unrest. Instability in the Middle East region &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could adversely impact the economy of Saudi Arabia, and there is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no assurance of political stability in Saudi Arabia.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The ability of foreign investors to invest in the securities of Saudi &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Arabian companies could be restricted by the Saudi Arabian &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government at any time, and unforeseen risks could materialize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to foreign ownership of such securities. There are a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;number of ways to conduct transactions in equity securities in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Saudi Arabian market. The Fund generally expects to transact in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;manner so that it is not limited by Saudi Arabian regulations to a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;single broker. However, there may be a limited number of brokers &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;who can provide services to the Fund, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the prices, quantity or timing of Fund transactions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000063466Member_RiskOfInvestingInTheUSMember"
      id="t_1373_60e1bcb5_878b_ea17_861c_81d22578ef3d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_SecuritiesLendingRiskMember"
      id="t_1374_e654db28_2bac_05ce_6b5b_db2396040f6e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_SovereignAndQuasiSovereignObligationsRiskMember"
      id="t_1375_fa3b941f_658c_a0df_815f_b0315d132dae"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Sovereign and Quasi-Sovereign Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invests in securities issued by or guaranteed by non-U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign governments&#160;and by entities affiliated with or backed by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-U.S. sovereign governments, which may be unable or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unwilling to repay principal or interest when due. In times of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic uncertainty, the prices of these securities may be more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;volatile than those of corporate debt obligations&#160;or of other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government debt obligations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_TrackingErrorRiskMember"
      id="t_1376_11abf5a5_40f8_976f_66e9_a1c882973247"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exposure to non-U.S. issuers may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_UtilityCompaniesRiskMember"
      id="t_1377_1a5d0ff1_603e_70c4_8896_506f00a0feb8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Utility Companies Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The utilities sector is generally subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant government regulation and oversight, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;restrictions on rates as well as environmental and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regulations. Utility companies also may face risks related to, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;among other things, natural disasters, cyber or other attacks, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;capital project funding, energy price volatility and increased &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;competition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063466Member_ValuationRiskMember"
      id="t_1378_c13163b1_7ed3_c2a3_b3b4_7bf4e86bd768"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000063466Member"
      id="t_507_c2ce4943_7025_4f8b_bb0d_247176c3daed"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000063466Member"
      id="t_1321_b5f22c98_2cc8_6687_32fc_b395ebfcb36f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000063466Member"
      id="t_1323_f640af80_67fb_3391_e248_7e4e411c2b9b">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000063466Member"
      id="t_1324_b1e6c598_1294_b2a8_7115_0051c689197e">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000063466Member"
      id="t_1367_85fc4143_6685_93f4_edd8_f6e71af1a809">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000063466Member"
      id="t_1325_ee48f32f_e6f4_de7b_47d6_db91ffd5f7f6">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000063466Member"
      id="t_1322_9f649fa1_47e6_0546_b90b_96cf247659e9"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000063466Member"
      id="t_1326_b4166248_e6fb_3c9b_f9f9_d693a0d4c972"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.9pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.9pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.29pt;"&gt;5.95%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.9pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.9pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-6.68%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000063466Member_C000205645Member"
      id="h_1307_5aad0801_c65c_4192_953c_d94990b3e591">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1308_63b5466d_2e0b_4951_820c_b459bbe22118"
      unitRef="pure">0.0595</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000063466Member_C000205645Member"
      id="h_1309_4b200081_1500_44c4_acc8_8b225fc26c4e">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000063466Member_C000205645Member"
      id="h_1310_de1fac44_7253_46b4_877c_0f0d1a8c7d09">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1311_b70a257c_9bef_4882_a0d9_5d3f879bfef6"
      unitRef="pure">-0.0668</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000063466Member_C000205645Member"
      id="h_1312_bdeb8f43_aa3f_44b2_bf35_8252749be437">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000063466Member"
      id="t_509_fbe0841e_76a4_4c4b_9715_d9ef48de56c0">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000063466Member_C000205645Member"
      id="t_1327_f4ad1ee1_e18b_2009_2e87_eedd924a20eb">2018-11-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1313_6e174e76_164c_4779_b7d1_dda6d07d4eca"
      unitRef="pure">0.0296</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1314_8930c068_23bc_4ca5_afac_5cdbc10fb04b"
      unitRef="pure">-0.0018</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063466Member_C000205645Member"
      decimals="4"
      id="h_1315_7739229f_b9af_434e_b00a_e07d7f97b1e3"
      unitRef="pure">0.0159</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063466Member_C000205645Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1316_89daa48d_cf3d_4a14_988a_f39965c38ca8"
      unitRef="pure">0.0128</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063466Member_C000205645Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1317_b50e64ab_8f6a_4baf_a8cf_04abc728c2fd"
      unitRef="pure">-0.0123</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063466Member_C000205645Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1318_c8c377f8_43d8_426e_baef_5fb52d062d46"
      unitRef="pure">0.0046</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063466Member_C000205645Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1319_970db03a_ac49_4b8f_84e1_1cce785035f6"
      unitRef="pure">0.0174</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063466Member_C000205645Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1320_5426e946_7589_4352_887c_6fdfc604d176"
      unitRef="pure">-0.0058</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063466Member_C000205645Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1321_0178d7dd_16a2_4372_9746_9a4bcb7b976b"
      unitRef="pure">0.0074</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063466Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1322_fce03ffe_aa74_41b1_9e41_403a4111d5cc"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063466Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1323_7ea9ab45_b9dd_48c5_abe3_7b9cb161ddde"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063466Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_1324_fd540232_aff7_4161_b05d_cafb764aedd0"
      unitRef="pure">0.0182</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063466Member_BloombergMSCIUSDGreenBondSelectIndexMember"
      decimals="4"
      id="h_1325_69d7f8e7_9380_47f4_a72f_7c2f08002a5d"
      unitRef="pure">0.0301</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063466Member_BloombergMSCIUSDGreenBondSelectIndexMember"
      decimals="4"
      id="h_1326_ee0c6649_9fee_4134_b454_c9b43258088e"
      unitRef="pure">0.0000</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063466Member_BloombergMSCIUSDGreenBondSelectIndexMember"
      decimals="4"
      id="h_1327_7a9f7d68_9656_435b_ab82_a7a276a7fb32"
      unitRef="pure">0.0174</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000063466Member"
      id="t_1328_e0d5ff46_c38f_2380_b91a_fd2468fe05c8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000063466Member"
      id="t_1329_641a3c0e_348e_7002_214f_728bac9b49fa">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000063466Member"
      id="t_1330_b57ae2cb_ea8f_be93_a32d_1fd0db79f52b">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000063466Member"
      id="t_1331_68292253_4a26_5b4d_5562_4def6e24332c">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000030481Member"
      id="t_1346_d0dec4ec_078d_daf4_2bed_6c1bc618acf4"> iSHARES&#xae; 0-5 YEAR TIPS BOND ETF  Ticker: STIPStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000030481Member"
      id="t_510_a892a8d5_6efb_4eda_ab12_8480f1d7a478">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000030481Member"
      id="t_511_5c7b30e1_3823_4c40_ad9c_4cb695e760de"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares 0-5 Year TIPS Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bonds with remaining maturities of less than or equal to five years.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000030481Member"
      id="t_512_79973c35_863a_4da7_9391_ea57281cb453">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000030481Member"
      id="t_513_31b63602_5e19_4f61_b51e_40d052ca77ac"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000030481Member"
      id="t_1347_7cbe3078_e0b2_9e05_4933_ccd0e44b0ae4">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1328_8b7f446f_53ea_44b2_b780_3238aa9587a2"
      unitRef="pure">0.0003</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1329_643a92bd_19fc_4734_900a_4910bbd9d6d0"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1330_19a62138_fe84_4c4d_8387_cb439c61018c"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1331_ced6608f_f75d_41f1_b8e7_8450a25467af"
      unitRef="pure">0.0003</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000030481Member"
      id="t_1348_716da992_2307_f0a8_c68d_be9d2a1e899c">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000030481Member"
      id="t_1349_284f9d52_3aa1_f9e8_7ddc_b2c08a20c426">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000030481Member_C000093655Member"
      decimals="INF"
      id="h_1332_1520ddff_9e16_4ed0_88b0_d2d0897a05b7"
      unitRef="USD">3</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000030481Member_C000093655Member"
      decimals="INF"
      id="h_1333_f25a7a9b_a9b9_4761_9d0d_0e8401d7c0ba"
      unitRef="USD">10</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000030481Member_C000093655Member"
      decimals="INF"
      id="h_1334_6eb446cd_c1bb_407b_baee_67145a5b596f"
      unitRef="USD">17</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000030481Member_C000093655Member"
      decimals="INF"
      id="h_1335_efc560a1_c762_4b27_91cf_8419c1e0db5d"
      unitRef="USD">39</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000030481Member"
      id="t_1350_e33a126f_dc93_ea82_3dd3_4f2d467a7fdc">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000030481Member"
      id="t_1351_d76213c5_e2ac_d4d8_0df7_fca89545b37c">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 25% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000030481Member"
      decimals="4"
      id="h_1336_a7a44982_a2fa_43c3_9f4b_281b37735f71"
      unitRef="pure">0.25</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000030481Member"
      id="t_515_066236ef_6445_41f2_af48_f56211f78a37"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000030481Member"
      id="t_516_eb926f53_1cbf_4636_a3fb_561a5319958e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury 0-5 Year Inflation Linked Bond Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which tracks the performance of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;public obligations of the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;&#160;that have a remaining maturity of less than or equal to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;five years. TIPS are securities issued by the U.S. Treasury that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designed to provide inflation protection to investors. TIPS are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income-generating instruments whose interest and principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted for inflation&#x2014;a sustained increase in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prices that erodes the purchasing power of money. The inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjustment, which is typically applied monthly to the principal of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the bond, follows a designated inflation index, the non-seasonally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted Consumer Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and TIPS' principal payments are adjusted according to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the CPI. A fixed coupon rate is applied to the inflation-adjusted &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;principal so that, as inflation rises, both the principal value and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the interest payments increase. This can provide investors with a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedge against inflation, as it helps preserve the purchasing power &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of an investment. Because of this inflation adjustment feature, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation-protected bonds typically have lower yields than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conventional fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities must have less than or equal to five years &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining to final maturity as of the rebalancing date and at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;$300 million of outstanding face value, excluding amounts held by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the securities in the Underlying Index must have a fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon schedule and must be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are government agency debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with or without a government guarantee, securities issued or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;marketed primarily to retail investors, floating rate notes, cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;management and Treasury bills, original issue zero coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any portions of such securities that have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;stripped after inclusion in the Underlying Index. Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;constituents are market capitalization weighted based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amounts outstanding reduced by amounts held by the Federal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Reserve SOMA. The Underlying Index is rebalanced on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index. The Fund will invest no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000030481Member"
      id="t_517_66551fdc_0b5b_4741_8935_d8193f2a70b0"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000030481Member_RiskLoseMoneyMember"
      id="t_1352_7d6a66e5_7920_a49e_a0b3_9434911bf55a">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_USTreasuryObligationsRiskMember"
      id="t_1366_3d24abeb_1f5d_a9a8_05a3_c12b3295111d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_InflationIndexedBondsRiskMember"
      id="t_1367_1e8a4fb5_a24d_ffa0_3ebb_32c9036d2456"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_InterestRateRisksMember"
      id="t_1368_9f43ccc8_88c6_f985_aef7_8f4b1890efb9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_MarketRiskMember"
      id="t_1369_22160bc7_7c50_2330_b513_02dad7fd2378"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_IndexRelatedRiskMember"
      id="t_1370_09db41f4_2cbc_f052_2e61_2814eebe5c0f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_AssetClassRiskMember"
      id="t_1371_7816d234_59d2_de6c_3936_5637c8f75e5b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1372_32467bd9_d403_686e_43cf_bade18e0533b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_ConcentrationRiskMember"
      id="t_1373_a8a9aa6d_23a7_88ab_65bd_50b914baaee3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_CybersecurityRiskMember"
      id="t_1374_c46a0c92_26e4_a1c3_8153_693baf6dd9aa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_IncomeRiskMember"
      id="t_1375_4a59f5b6_9aae_8db4_a400_9236f96b01f6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund&#x2019;s income may decline due to a decline in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation, deflation or changes in inflation expectations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_ManagementRiskMember"
      id="t_1376_869bfa9c_736f_d156_b84e_b089468899ab"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_MarketTradingRiskMember"
      id="t_1377_1226a2e8_1afd_ae17_f127_36f442cb583d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_OperationalRiskMember"
      id="t_1378_0af00ad6_4a44_6ba8_5880_59fe16cdcc8e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_RiskOfInvestingInTheUSMember"
      id="t_1379_7cb60650_038e_a49c_b35d_d1b6757dbf1d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_SecuritiesLendingRiskMember"
      id="t_1380_7a0df591_2359_392f_b2ea_38db7a7058c6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000030481Member_TrackingErrorRiskMember"
      id="t_1381_530604fa_4f21_4504_7add_f81fe30dea4e"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000030481Member"
      id="t_518_22518640_e3a7_4e91_824e_e4207cf119bf"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000030481Member"
      id="t_1353_e210ca94_9ded_5da3_85bb_2010c75fb413"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000030481Member"
      id="t_1354_221b7456_a0b7_88d8_5ee8_01d454c7430a">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000030481Member"
      id="t_1355_eb7e4dfb_4df3_6cd8_7579_ab577ec46d21">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000030481Member"
      id="t_1356_52793ba7_d293_c90c_e95b_cd1deb660d88">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000030481Member"
      id="t_1357_ea3eca19_9da2_46b6_d74d_0b67d34411fc">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000030481Member"
      id="t_1358_fa4b0c08_4866_265a_2996_d84530f20ba4"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000030481Member"
      id="t_1359_a9f3de7d_2c79_9951_f9bc_68351256ff93"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.29pt;"&gt;2.75%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-2.62%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000030481Member_C000093655Member"
      id="h_1340_2ca66d33_39e1_40f0_9c2b_52cd6771f8f4">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1341_b66cc454_eede_453d_a88a_4d2dffcda0e0"
      unitRef="pure">0.0275</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000030481Member_C000093655Member"
      id="h_1342_69232c9d_9d93_472b_a27e_22a3cb306f22">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000030481Member_C000093655Member"
      id="h_1343_f649cb39_ab70_4a5a_a038_74cecac2fb8e">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1344_90e446d9_5aa4_41e8_b4e4_8ebde08e06ca"
      unitRef="pure">-0.0262</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000030481Member_C000093655Member"
      id="h_1345_fe71f228_e12b_45a8_bc15_f41662401c13">2022-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000030481Member"
      id="t_520_a8184aa0_cba3_4204_ae48_3e715f2bbe7b">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000030481Member_C000093655Member"
      id="t_1360_16622d27_e64a_1411_a735_5ed5e8caf698">2010-12-01</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1346_86195d07_26d9_4dab_8fd6_9cad1f1c1989"
      unitRef="pure">0.0478</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1347_c0979b22_2e27_43e8_aa0d_3c263e7c483c"
      unitRef="pure">0.0339</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000030481Member_C000093655Member"
      decimals="4"
      id="h_1348_7c56f83b_dd6b_4898_b978_0af08a65f685"
      unitRef="pure">0.0257</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000030481Member_C000093655Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1349_fca48688_51de_477f_a80e_dc579832f119"
      unitRef="pure">0.0366</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000030481Member_C000093655Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1350_3f4a7cd9_ddc0_41af_993b_2d103795a17b"
      unitRef="pure">0.0198</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000030481Member_C000093655Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1351_7affdf02_b33a_4bd4_ae7e_ea975cc315a1"
      unitRef="pure">0.0158</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000030481Member_C000093655Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1352_3afc70a5_121b_4846_a4de_93d8c7858a94"
      unitRef="pure">0.0282</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000030481Member_C000093655Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1353_b75b8501_97ef_47cf_a64b_d57dd4fbbd4f"
      unitRef="pure">0.0200</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000030481Member_C000093655Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1354_d02c0d1b_9856_4c17_95d1_4b4e18b39a96"
      unitRef="pure">0.0155</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000030481Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1355_fe043c15_eb8b_4876_872a_281f21cf34c9"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000030481Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1356_fbcbc073_f000_4e53_ae94_22881a3052a4"
      unitRef="pure">-0.0034</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000030481Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1357_5495522e_366d_4bb4_a9ba_8f8219ea1ca7"
      unitRef="pure">0.0137</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000030481Member_ICEUSTreasury05YearInflationLinkedBondIndexMember"
      decimals="4"
      id="h_1358_61b0779f_9b77_4036_8ffe_87d11ac50729"
      unitRef="pure">0.0477</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000030481Member_ICEUSTreasury05YearInflationLinkedBondIndexMember"
      decimals="4"
      id="h_1359_ebafcca1_100b_43ea_a8a7_08a775973492"
      unitRef="pure">0.0334</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000030481Member_ICEUSTreasury05YearInflationLinkedBondIndexMember"
      decimals="4"
      id="h_1360_bd5176a3_a28e_4ac6_9b4b_504d27c01fbd"
      unitRef="pure">0.0257</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000030481Member"
      id="t_1365_6865a8e1_2d9f_c283_5908_cc7ae46a5b2f">Index returns through January 31, 2023 reflect the performance of the Bloomberg U.S. Treasury Inflation-Protected Securities (TIPS) 0-5 Years Index (Series-L). Index returns beginning on February 1, 2023 reflect the performance of the ICE U.S. Treasury 0-5 Year Inflation Linked Bond Index, which, effective as of February 1, 2023, replaced the Bloomberg U.S. Treasury Inflation-Protected Securities (TIPS) 0-5 Years Index (Series-L) as the Underlying Index of the Fund.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000030481Member"
      id="t_1361_b5b7337b_c9e2_2853_f4c1_f49244dd12f6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000030481Member"
      id="t_1362_48253a33_ea1c_f1e9_031b_ed26f563bacb">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000030481Member"
      id="t_1363_29532cc8_4824_6bb4_a27b_6156f8cb8f4c">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000030481Member"
      id="t_1364_e23e3ebe_51f3_cf90_ed2b_4f8cf3fa43dd">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000063114Member"
      id="t_1376_261e26da_4f2b_4d56_2b59_6e22a30586ad"> iSHARES&#xae; iBONDS&#xae; DEC 2025 TERM MUNI BOND ETF  Ticker: IBMNStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000063114Member"
      id="t_521_73335baf_e14b_413f_a648_b9bec6bf21ed">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000063114Member"
      id="t_522_33044e80_7099_43d9_aee0_40572113312a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2025 Term Muni Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. municipal bonds maturing after December 31, 2024 and before December 2, 2025.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000063114Member"
      id="t_523_6670d7bd_68f1_46df_9c42_fd2d7be03474">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000063114Member"
      id="t_524_415d2187_87ff_4bc9_a5cc_24c4575aeaec"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000063114Member"
      id="t_1377_83ee3d72_ae55_f98e_24e2_791184f31736">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1361_588cf43f_e014_466a_a779_cb76f9bbce14"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1362_3559f835_caf6_414e_9411_2e642e64897a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1363_30789016_0b7b_4e50_a12a_e2f0328385a7"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1364_eb23cefc_def8_4414_8e5a_02ea74ffff92"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000063114Member"
      id="t_1378_0d0e060f_09f5_14a9_9379_ece13ba86d6b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000063114Member"
      id="t_1414_3efcb6cd_b551_8397_0645_2d1d06bd4780">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2025 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <ist:ExpenseExampleMaturity
      contextRef="S000063114Member_C000204675Member"
      decimals="INF"
      id="h_1365_f3e31bba_e53d_4dc4_a4d2_1f1269c019f7"
      unitRef="USD">15</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000063114Member"
      id="t_1418_f97f62ae_36a5_95c9_f914_a970efb4f2fa">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000063114Member"
      id="t_1417_22b8834f_ce19_4153_5157_2a5fb58e992c">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000063114Member"
      decimals="4"
      id="h_1366_80ed8804_b897_4be4_b9c9_61187d2e70d9"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000063114Member"
      id="t_526_609945a0_a3a4_4de6_afd8_84e422b7e6ba"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000063114Member"
      id="t_527_f343b8be_d8b8_4fa1_83ab_4b407732b1af"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the S&amp;amp;P AMT-Free&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal Series Dec 2025 Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5.5pt; position: relative; top: -3.75pt;"&gt;TM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which measures the performance of non-callable, investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; (as determined by S&amp;amp;P Dow Jones Indices LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), tax-exempt U.S. municipal bonds maturing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in 2025. As of October 31, 2024, there were&#160;12,232 issues in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes municipal bonds primarily from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers that are U.S. state, federal district (the District of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Columbia), or local government or agency such that the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on the bonds is exempt from U.S. federal income taxes and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal alternative minimum tax (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;AMT&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Each bond must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rating of at least BBB- by S&amp;amp;P Global Ratings, Baa3 by Moody&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investors Service, Inc., or BBB- by Fitch Ratings, Inc. and must &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a minimum maturity par amount of $2 million to be eligible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inclusion in the Underlying Index. To remain in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, bonds must maintain a minimum par amount greater than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or equal to $2 million as of each rebalancing date. All bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index will mature after December 31, 2024 and before &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 2, 2025. Bonds in the Underlying Index that mature or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are pre-refunded in their respective year of maturity do not accrue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest past the maturity or pre-refund date.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) sponsored by BlackRock, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series do not invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in U.S. savings bonds or other U.S. government bonds (except to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent the funds hold cash equivalent instruments consistent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with their investment objectives) and are not designed to provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;protection against inflation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, in each case except during the last months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund's operations, as described below. The Fund will invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index as well as in fixed income securities other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the types included in the Underlying Index, but which BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will generally hold municipal bond securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;state and local municipalities whose interest payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income tax, the federal AMT and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; including dividends, interest and capital gains.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds will not be reinvested in bonds but instead &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be held in cash and cash equivalents, including, without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitation, shares of money market funds advised by BFA or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates, AMT-free tax-exempt municipal notes, variable rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand notes and obligations, tender option bonds and municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial paper. These cash equivalents may not be included in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. By December 2, 2025, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is expected to consist entirely of cash earned in this manner. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Around the same time, the Fund will wind up and terminate. After &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;appropriate provision is made for any Fund liabilities, its net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets will be distributed to then-current shareholders pursuant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to a plan of liquidation. The Fund's termination was approved by a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;majority of the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not require additional approval by Fund shareholders. The Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may extend the termination date if a majority of the Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by SPDJI, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;/div&gt;    &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000063114Member"
      id="t_1379_c0303359_7e62_a5e3_25ca_be4dc99d007a"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government   (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000063114Member"
      id="t_528_a7025187_bd6e_4f8e_9cf3_fca5fe1e75e7"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000063114Member_RiskLoseMoneyMember"
      id="t_1380_18a92f4e_9f8f_b9e4_8e7c_4a369880e9f6">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_MunicipalSecuritiesRiskMember"
      id="t_1391_e2533034_65c5_6ec6_1909_cafb2751bd9a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Municipal Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal securities can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly affected by political or economic changes, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes made in the law after issuance of the securities, as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as uncertainties in the municipal market related to taxation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative changes or the rights of municipal security holders, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including in connection with an issuer insolvency. Municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities backed by current or anticipated revenues from a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;specific project or specific assets can be negatively affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the inability to collect revenues from such projects or assets. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Certain municipal securities are issued by entities with limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxing authority such as school districts, or are dependent on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;revenue from a particular sector or industry, such as the utilities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector, infrastructure sector, or transportation industry. In the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;event of a default or insolvency, certain issuers of municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds may be subject to proceedings other than those specified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by U.S. bankruptcy laws, which may impact the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ultimately recover assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_RiskOfInvestingInTheUSMember"
      id="t_1392_12f23662_f385_3cf2_0dab_28ac68386411"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_InterestRateRisksMember"
      id="t_1393_ad911776_1356_fd2b_373b_79fc8427815c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_MarketRiskMember"
      id="t_1394_7d72be3c_f947_24e8_4ee5_c24f5bc16b47"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_IndexRelatedRiskMember"
      id="t_1395_7dda9593_67e2_c29d_2be6_3690a9e7018b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_AssetClassRiskMember"
      id="t_1396_bec6ad1d_4577_35e6_af70_e0c04b1f069a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1397_4e2506c2_ffca_851a_4947_296b2c18416e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_CashManagementRiskMember"
      id="t_1398_2391593c_a8ff_dc53_0fc7_db3056dbc98d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cash Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;If a significant amount of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets is invested in cash and cash equivalents, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform other funds that do not similarly invest in cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents for investment purposes and/or to collateralize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative instruments.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_ConcentrationRiskMember"
      id="t_1399_95d5bf4b_b93e_d03c_23b0_a6daa8500d6e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_CreditRisksMember"
      id="t_1400_18063d01_55da_a854_681f_70e64e4769b5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_CybersecurityRiskMember"
      id="t_1401_ecbc6347_b15c_a606_b452_66905a98098a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_DecliningYieldRiskMember"
      id="t_1402_e3fca608_b17f_08ec_acb4_12973d67cc82"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the final eleven months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's planned termination date, its yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_1403_3e04512a_078a_498a_5292_63c5a9a85d6b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a municipal bond that has a level &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payment and a fixed payment at maturity, will make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions of income that vary over time. It is expected that an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund, if held through maturity, will produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate returns comparable to a direct investment in a group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds of similar credit quality and maturity. Unlike a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;direct investment in municipal bonds, the breakdown of returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;between Fund distributions and liquidation proceeds are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predictable at the time of your investment. For example, at times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;during the Fund's existence it may make distributions at a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or lesser) rate than the coupon payments received on the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio, which would result in the Fund returning a lesser (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater) amount on liquidation than would otherwise be the case. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The rate of Fund distribution payments may adversely affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax characterization of your returns from an investment in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund relative to a direct investment in municipal bonds. If the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount you receive as liquidation proceeds upon the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination is higher or lower than your cost basis, you may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience a gain or loss for tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_IlliquidInvestmentsRiskMember"
      id="t_1404_f72f0c95_5e57_b64e_9105_31b221ca0108"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_IncomeRiskMember"
      id="t_1405_e4925576_ddd2_a072_1194_982cc82969f5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_IssuerRiskMember"
      id="t_1406_c880f52a_5d3d_2871_2d30_19c4a3f58f2d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1407_0c7b19e6_1b5f_7a17_92d5_1d548896de4c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_ManagementRiskMember"
      id="t_1408_f5192c2b_fc43_3d2c_998f_3db8ca6da0fa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_MarketTradingRiskMember"
      id="t_1409_78861411_5ac6_2fb3_8289_bdc3f5d003b9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_OperationalRiskMember"
      id="t_1410_43ff3d58_308f_b75e_fe89_d6917af33af4"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_TaxRiskMember"
      id="t_1411_da4bd21f_094b_6726_6e1e_05e798fa9567"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; There is no guarantee that the Fund's income will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes, the federal AMT or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_TrackingErrorRiskMember"
      id="t_1412_a2b31111_b403_3d3e_ec22_b60aaf3d2e5c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds are an investment focus may experience higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063114Member_ValuationRiskMember"
      id="t_1413_de6e1204_60df_9ba5_796b_6586289d1f96"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000063114Member"
      id="t_529_8a637f06_7930_4231_8b56_ce9add7a19a0"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000063114Member"
      id="t_1381_5c50d0b9_9435_e969_6e4a_5a85d61126cd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000063114Member"
      id="t_1382_612e833c_2731_75bb_1cb4_aad089abe8ce">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000063114Member"
      id="t_1383_4e80ff79_8afe_da49_4cf6_bd187b9e5622">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000063114Member"
      id="t_1416_2e3321a6_2564_f0c3_9073_098a0613d79d">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000063114Member"
      id="t_1415_783994c2_437a_a095_2f1e_25648db47be5">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000063114Member"
      id="t_1384_cbf61197_75a0_6591_a9c7_9b4ec4c261e5"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000063114Member"
      id="t_1385_fc9369ce_39ef_b8fb_403b_b5f5b35a3ff1"> &lt;div style="margin-top: 0.0pt;"&gt; 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.41pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.41pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.79pt;"&gt;3.46%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.41pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.41pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.31%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/div&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000063114Member_C000204675Member"
      id="h_1370_b7c3d040_7381_4b11_8e49_406fc183fc36">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1371_bcb8f31d_8225_4f81_8676_f0a9d78b81ce"
      unitRef="pure">0.0346</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000063114Member_C000204675Member"
      id="h_1372_f2a718ed_2802_430b_92af_72996d1bab73">2020-06-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000063114Member_C000204675Member"
      id="h_1373_24a7fcbc_8435_428e_86f1_f671796bf50c">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1374_589c7085_5bd5_488f_81b1_c3e151589c0b"
      unitRef="pure">-0.0431</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000063114Member_C000204675Member"
      id="h_1375_bbbfa86d_4f13_4928_8513_d139d9fb806f">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000063114Member"
      id="t_531_e70a3051_3209_42de_bfe2_febc6016b689">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000063114Member_C000204675Member"
      id="t_1390_342fbc96_fc5a_c8c3_c42f_8d601a104381">2018-11-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1376_884780a6_4723_4570_807f_6e3f8a897f41"
      unitRef="pure">0.0240</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1377_937cda2b_65b1_4cc4_9703_9ee30191e14c"
      unitRef="pure">0.0092</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063114Member_C000204675Member"
      decimals="4"
      id="h_1378_0bfab460_dcdc_41bf_b3df_8b7772f22fda"
      unitRef="pure">0.0244</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063114Member_C000204675Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1379_931f2205_8020_4f07_9594_d9ca19923a87"
      unitRef="pure">0.0240</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063114Member_C000204675Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1380_2394b53f_50ae_4493_859b_acabfbf145ce"
      unitRef="pure">0.0092</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063114Member_C000204675Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1381_bde02670_5a46_46a3_84b4_2695ad172910"
      unitRef="pure">0.0244</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063114Member_C000204675Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1382_e984a9f1_47c6_4122_ada1_70cf9b08e760"
      unitRef="pure">0.0226</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063114Member_C000204675Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1383_ee90fa9f_ad2b_4f68_b65f_70e094221cea"
      unitRef="pure">0.0101</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063114Member_C000204675Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1384_0bf56671_4077_4ec9_8900_74c3236cbb88"
      unitRef="pure">0.0222</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063114Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1385_0de07560_cdad_44fa_a00c_b0d6a3cdf84f"
      unitRef="pure">0.0153</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063114Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1386_df425660_b428_42a2_9576_bb2efdea43c1"
      unitRef="pure">0.0107</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063114Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1387_ad7f2dd3_2fa1_42da_97de_864c9d579804"
      unitRef="pure">0.0235</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063114Member_SAndPAMTFreeMunicipalSeriesDec2025IndexMember"
      decimals="4"
      id="h_1388_33687912_62ff_4621_8199_9a087c85475e"
      unitRef="pure">0.0267</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063114Member_SAndPAMTFreeMunicipalSeriesDec2025IndexMember"
      decimals="4"
      id="h_1389_648c4811_5f86_439a_a824_e87267c56f7e"
      unitRef="pure">0.0112</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063114Member_SAndPAMTFreeMunicipalSeriesDec2025IndexMember"
      decimals="4"
      id="h_1390_0de339c6_4200_47de_835f_ac56a8e69da3"
      unitRef="pure">0.0245</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000063114Member"
      id="t_1386_070b847a_5b69_e13d_baac_7e4dd150ea24"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000063114Member"
      id="t_1387_6d943696_7e7d_5c4c_2024_32d7b0db3b55">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000063114Member"
      id="t_1388_30b6130d_70f5_82a8_8d43_41441a0d597f">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000063114Member"
      id="t_1389_007fad12_5693_f749_70c0_fad031e523d2">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000063115Member"
      id="t_1448_06b19fb2_a577_734b_3ee2_46e1dc693244"> iSHARES&#xae; iBONDS&#xae; DEC 2026 TERM MUNI BOND ETF  Ticker: IBMOStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000063115Member"
      id="t_532_e7be38d1_1cff_4943_bbf2_fa36f3cc50e2">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000063115Member"
      id="t_533_639c5c50_fa7e_4ca1_aab8_1eea78bd04d8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2026 Term Muni Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. municipal bonds expected to mature or be redeemed before December 2, 2026.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000063115Member"
      id="t_534_6b4a9248_8425_4a3e_a577_9e75b7580263">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000063115Member"
      id="t_535_940fa458_e85c_401c_b5a7_9c8b6b743f6d"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000063115Member"
      id="t_1446_78534d81_0973_dfe2_9b1d_8da72e2894f3">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1391_4200f0e1_39a2_4944_9003_efb27573af9c"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1392_04a92db6_bd77_4a32_806b_637be09d1d68"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1393_ffb64ec6_64e5_4524_9687_f5d515622ec7"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1394_7b87c3c7_72e9_4d1a_b1d2_5068fd6059cd"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000063115Member"
      id="t_1447_ded83cfb_b5d7_7e36_296c_6a9d104f5c43">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000063115Member"
      id="t_1449_4204fe73_53bc_b8df_7c18_9f6a4f883c37">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2026 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000063115Member_C000204676Member"
      decimals="INF"
      id="h_1395_206012af_ca66_4424_b986_04a81f77baef"
      unitRef="USD">18</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000063115Member_C000204676Member"
      decimals="INF"
      id="h_1396_b5dd2bfb_f9e5_4580_93bc_18bbf5dd106e"
      unitRef="USD">34</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000063115Member"
      id="t_1444_039c3ff4_361c_52f5_3178_9e02c975612b">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000063115Member"
      id="t_1445_cc9660f3_d22c_003c_d9d1_8068b73d1551">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 5% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000063115Member"
      decimals="4"
      id="h_1397_42e6bf7f_4bbc_4b13_ac59_e2a0e8fc5bd6"
      unitRef="pure">0.05</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000063115Member"
      id="t_537_6cda0233_28c3_44ae_99a4_e48d3fd17939"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000063115Member"
      id="t_538_078f1893_5d67_4406_88af_5a029ccfd8bd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the S&amp;amp;P AMT-Free&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal Series Callable-Adjusted Dec 2026 Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5.5pt; position: relative; top: -3.75pt;"&gt;TM &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the performance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (as determined by S&amp;amp;P Dow Jones Indices LLC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), tax-exempt, U.S. municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, reducing callable bonds before 2026, and only including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-callable bonds maturing in 2026. As of October 31, 2024, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there were 13,774&#160;issues in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes municipal bonds primarily from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers that are U.S. state, federal district (the District of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Columbia), or local government or agency such that the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on the bonds is exempt from U.S. federal income taxes and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal alternative minimum tax (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;AMT&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Bonds issued by U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;territories and the Commonwealth of Puerto Rico are excluded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Underlying Index. Each bond must have a rating of at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;least BBB- by S&amp;amp;P Global Ratings, Baa3 by Moody&#x2019;s Investors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Service, Inc., or BBB- by Fitch Ratings, Inc. and must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum maturity par amount of $2 million to be eligible for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion in the Underlying Index. To remain in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index, bonds must maintain a minimum par amount greater than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or equal to $2 million as of each rebalancing reference date. All &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-callable bonds in the Underlying Index will mature or be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;redeemed after December 31, 2025 and before December 2, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2026. Callable bonds are eligible subject to the following: (i) a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;final maturity date after December 31, 2025 and before December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2, 2026, and a next call date no sooner than two years prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index maturity year; or (ii) a final maturity up to four years after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the index maturity year, if the next call date is within the index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity range. In the Underlying Index year of maturity, bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that mature or are pre-refunded in their respective year of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity do not accrue interest past the maturity or pre-refund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date. A bond is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; when the bond has been refunded &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to a call date prior to maturity.&#160;&#160;In other words, a holder of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bond receives all payments of interest and principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;back on an earlier date then the stated maturity date of the bond. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;All payments related to the maturity or pre-refunding of a bond &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are reinvested in tax-exempt cash or cash equivalents for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;duration of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Outside of five years prior to the term of the Fund, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index will be market value weighted. Five years prior to the term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund, monthly rebalances occurring in rolling two year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods will remove bonds with a maturity year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund from the Underlying Index. Such rebalancing will begin &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with those bonds whose effective maturity date is furthest from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that of the Underlying Index. Each two year period will remove &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature in a specific year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&#160;&#160;For example, bonds scheduled to mature in 2030 will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be removed from the Underlying Index over the course of a two &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year period beginning in January 2021. As a result, as of January 1, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2026, the Underlying Index will not contain bonds with an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effective maturity date later than December 2, 2026. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) sponsored by BlackRock, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series do not invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in U.S. savings bonds or other U.S. government bonds (except to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent the funds hold cash equivalent instruments consistent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with their investment objectives) and are not designed to provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;protection against inflation. The Fund does not invest in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal government agency bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, in each case except during the last months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund's operations, as described below. The Fund will invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index as well as in fixed income securities other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the types included in the Underlying Index, but which BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will generally hold municipal bond securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;state and local municipalities whose interest payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income tax, the federal AMT and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; including dividends, interest and capital gains.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds will not be reinvested in bonds but instead &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be held in cash and cash equivalents, including, without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitation, shares of money market funds advised by BFA or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates, AMT-free tax-exempt municipal notes, variable rate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand notes and obligations, tender option bonds and municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial paper. These cash equivalents may not be included in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. By December 2, 2026, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is expected to consist entirely of cash earned in this manner. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Around the same time, the Fund will wind up and terminate. After &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;appropriate provision is made for any Fund liabilities, its net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets will be distributed to then-current shareholders pursuant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to a plan of liquidation. The Fund's termination was approved by a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;majority of the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not require additional approval by Fund shareholders. The Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may extend the termination date if a majority of the Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by SPDJI, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000063115Member"
      id="t_1443_484bec32_3cb9_42b2_e957_ce522069eaff"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000063115Member"
      id="t_539_1f227824_1caf_46b5_86da_d9c0943fcc9d"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000063115Member_RiskLoseMoneyMember"
      id="t_1442_cac2e267_acd0_c393_7c6c_3bbd95c65c22">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_MunicipalSecuritiesRiskMember"
      id="t_1441_5aacedba_2f71_f782_7f1f_4dc32fd05d80"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Municipal Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal securities can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly affected by political or economic changes, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes made in the law after issuance of the securities, as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as uncertainties in the municipal market related to taxation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative changes or the rights of municipal security holders, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including in connection with an issuer insolvency. Municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities backed by current or anticipated revenues from a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;specific project or specific assets can be negatively affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the inability to collect revenues from such projects or assets. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Certain municipal securities are issued by entities with limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxing authority such as school districts, or are dependent on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;revenue from a particular sector or industry, such as the utilities &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector, infrastructure sector, or transportation industry. In the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;event of a default or insolvency, certain issuers of municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds may be subject to proceedings other than those specified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by U.S. bankruptcy laws, which may impact the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ultimately recover assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_RiskOfInvestingInTheUSMember"
      id="t_1440_497351b6_6aac_0f3c_f00a_13fafcbb02ae"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_InterestRateRisksMember"
      id="t_1439_66bf357c_2a27_b95a_cfa6_c30e193e2d6b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_MarketRiskMember"
      id="t_1438_6ab5d8f5_f1d2_5a4f_5d1c_494f16a97d24"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_IndexRelatedRiskMember"
      id="t_1437_94840e38_3b3b_cb54_c94d_c87c0d232fdc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_AssetClassRiskMember"
      id="t_1436_78bb3a51_bc37_85e5_b467_e5f25500640f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1435_8d4f9221_5d81_8713_a470_585dd7d41e47"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_CallRiskMember"
      id="t_1434_a65483ec_0d27_b7e2_977e_83b750e38d10"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features. Issuers of longer maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be more likely to call such securities as interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates fall. As a result, the Fund's investment in certain callable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside the term of the Fund may increase the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likelihood that securities held by the Fund are called prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 2, 2026.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_ConcentrationRiskMember"
      id="t_1433_7dbe38a3_2d23_16f5_0501_6edf2c713e67"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_CreditRisksMember"
      id="t_1432_18a22311_8a75_decc_44e8_eb74fd2a1c24"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_CybersecurityRiskMember"
      id="t_1431_e3f014b6_b214_94aa_3faf_7fd6b53f92c4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_DecliningYieldRiskMember"
      id="t_1426_7ef107d8_b3d3_16ed_e260_ae34363a9f33"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the final eleven months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's planned termination date, its yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_1427_6b155cc2_f1e9_c127_c3b4_e7a11b3c76c5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a municipal bond that has a level &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payment and a fixed payment at maturity, will make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions of income that vary over time. It is expected that an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund, if held through maturity, will produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate returns comparable to a direct investment in a group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds of similar credit quality and maturity. Unlike a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;direct investment in municipal bonds, the breakdown of returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;between Fund distributions and liquidation proceeds are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predictable at the time of your investment. For example, at times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;during the Fund's existence it may make distributions at a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or lesser) rate than the coupon payments received on the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio, which would result in the Fund returning a lesser (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater) amount on liquidation than would otherwise be the case. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The rate of Fund distribution payments may adversely affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax characterization of your returns from an investment in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund relative to a direct investment in municipal bonds. If the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount you receive as liquidation proceeds upon the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination is higher or lower than your cost basis, you may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience a gain or loss for tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_IlliquidInvestmentsRiskMember"
      id="t_1428_011d65a2_9402_3fc8_c5a4_ec290410e1af"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_IncomeRiskMember"
      id="t_1429_bd6cc3ca_843b_a497_1213_de466252670b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_IssuerRiskMember"
      id="t_1430_e95f7959_fa7d_aa9b_ec31_033d4073a434"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1425_ce873fde_0d8d_e598_8991_50c422a3547f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_ManagementRiskMember"
      id="t_1424_65d8559f_1f5a_b921_1e53_ea11103859b6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_MarketTradingRiskMember"
      id="t_1423_aacb6727_df2d_0d4a_52c2_251e8ac47833"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_OperationalRiskMember"
      id="t_1421_ed68a216_483a_6359_bca9_c675bc9631c3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_TaxRiskMember"
      id="t_1422_2ecc54e4_2b5c_5301_086f_4d7ef1ee256d"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; There is no guarantee that the Fund's income will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes, the federal AMT or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_TrackingErrorRiskMember"
      id="t_1420_61d0acbd_2fe6_4220_45b4_ce3e1cf56950"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds are an investment focus may experience higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000063115Member_ValuationRiskMember"
      id="t_1419_27a96297_c5a4_a54d_4093_65ada00f87e2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000063115Member"
      id="t_540_796f5bf7_52ba_4bbe_9ba6_fc0267322659"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000063115Member"
      id="t_1407_238c6de1_bbae_35ad_5784_9312bd7da71f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000063115Member"
      id="t_1415_91d6286d_a7f7_cabe_47e5_eff035e83f64">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000063115Member"
      id="t_1416_c1e6ef8f_8db9_5bc1_e038_76cc9b9a20cd">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000063115Member"
      id="t_1417_f429bf8a_3d62_af2f_7a28_2328f1a316f8">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000063115Member"
      id="t_1418_d940d51c_782c_d2ee_37c4_6c643e0636e3">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000063115Member"
      id="t_1409_4fab4213_f173_ca46_35be_da5371b2eb41"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000063115Member"
      id="t_1408_6a2e1edd_b70a_8dd0_e304_bb76304dcdaa"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.62pt;"&gt;3.47%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.06%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000063115Member_C000204676Member"
      id="h_1401_a02dc073_9c02_485c_b4c5_c403478f575d">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1402_7c7ca93f_9b7d_4b27_93c0_502fe97f3c2b"
      unitRef="pure">0.0347</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000063115Member_C000204676Member"
      id="h_1403_a20770cc_2a0c_4218_8445_1664ce653bbe">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000063115Member_C000204676Member"
      id="h_1404_862e24fd_1a46_45a5_ae9f_8ba2e0de5553">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1405_21b1817b_465b_4c8c_be95_caabeac793d9"
      unitRef="pure">-0.0506</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000063115Member_C000204676Member"
      id="h_1406_a47fbbcb_4a19_4aa0_933f_6b91073e113f">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000063115Member"
      id="t_542_2d5e3f7f_ae9e_4f4f_9115_3c150b7f68d2">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000063115Member_C000204676Member"
      id="t_1410_3cb66cae_e104_525c_e491_a3824dcc039d">2019-04-02</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1407_80e608a5_d8ae_4ed4_af3a_978cc111e50d"
      unitRef="pure">0.0198</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1408_2ba524b7_9c89_47da_b70c_9c6bcbb3d132"
      unitRef="pure">0.0090</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063115Member_C000204676Member"
      decimals="4"
      id="h_1409_a26adc83_273e_431b_a7f8_fe90a2a1cca3"
      unitRef="pure">0.0160</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063115Member_C000204676Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1410_80e241a0_e1db_48e5_b507_12d17f1b6dfb"
      unitRef="pure">0.0198</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063115Member_C000204676Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1411_d82b0ed7_decb_4898_a46b_7c25a31692a9"
      unitRef="pure">0.0090</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063115Member_C000204676Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1412_cfa5dc64_7155_4cdc_b2e2_9d914c1f50de"
      unitRef="pure">0.0160</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063115Member_C000204676Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1413_da9b0f73_e538_40c9_bb9d_3dd7846b8580"
      unitRef="pure">0.0206</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063115Member_C000204676Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1414_881a6362_7503_4c18_b9b7_7c60a861b1e9"
      unitRef="pure">0.0099</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063115Member_C000204676Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1415_609ad326_c454_4d58_9b52_2cc228706cc5"
      unitRef="pure">0.0154</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063115Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1416_a4bebd8c_5531_40d2_b38d_bd4ca866e9ca"
      unitRef="pure">0.0153</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063115Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1417_148d7404_657b_4825_8fd7_80969be61a43"
      unitRef="pure">0.0107</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063115Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1418_5d22d57f_3672_4fed_b86b_148bbd50e71c"
      unitRef="pure">0.0168</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000063115Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2026IndexMember"
      decimals="4"
      id="h_1419_c2b85e01_e72c_47e9_a8e3_473981e8ecaa"
      unitRef="pure">0.0233</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000063115Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2026IndexMember"
      decimals="4"
      id="h_1420_15e46492_d93b_4f39_bbd2_c2ac27c4c5a1"
      unitRef="pure">0.0108</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000063115Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2026IndexMember"
      decimals="4"
      id="h_1421_94d8f22a_882b_49fd_b016_2159db4b1d71"
      unitRef="pure">0.0174</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000063115Member"
      id="t_1411_10e499d7_bec4_f3ed_f13d_c27cd85598a2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000063115Member"
      id="t_1412_035d0d0f_cf06_b521_c86f_b3e1ffde0feb">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000063115Member"
      id="t_1413_c69738cc_6e0b_fe31_5611_0e97d2a2531d">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000063115Member"
      id="t_1414_a7aaf44c_0f4d_cf56_b8fb_8d684401f8f4">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000065128Member"
      id="t_1438_2add300b_b489_5ed7_11f2_c63099990c10"> iSHARES&#xae; iBONDS&#xae; DEC 2027 TERM MUNI BOND ETF  Ticker: IBMPStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000065128Member"
      id="t_543_beea850f_dde7_4c8b_9996_47f170296c0a">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000065128Member"
      id="t_544_a5888355_f7af_4907_a5d0_46b649378e79"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2027 Term Muni Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. municipal bonds expected to mature or be redeemed before December 2, 2027.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000065128Member"
      id="t_545_11265cd5_a002_487c_ba98_b76836d244a9">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000065128Member"
      id="t_546_7c4dd3ac_2740_4912_a3c7_d041300a99a3"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000065128Member"
      id="t_1439_de00fc75_946a_671d_29a9_f553b450afbb">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1422_a5288fd9_f3e8_43e1_936f_e28c6c010c53"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1423_c368c98e_3832_4d94_aaf2_9e94edf1dcce"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1424_9f0b577f_269d_4b06_94aa_e7976ca2e553"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1425_4f6673e3_2047_404d_8263_df6d20f259af"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000065128Member"
      id="t_1479_f89053dc_62e0_d809_326a_4d196ba1623e">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000065128Member"
      id="t_1480_af3ceb95_ff07_64ed_1d46_b4805b7513ff">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2027 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000065128Member_C000210857Member"
      decimals="INF"
      id="h_1426_8b73434e_59e3_4fa7_a16e_092f5918db7d"
      unitRef="USD">18</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000065128Member_C000210857Member"
      decimals="INF"
      id="h_1427_78c427e6_6fc2_44c8_93e8_4679dde2d08c"
      unitRef="USD">54</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000065128Member"
      id="t_1440_68dc0ea1_e21c_b5bb_9f45_bf96ab6ca0d6">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000065128Member"
      id="t_1441_b8515116_e3ad_e1fc_ad93_beb9471d0b99">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 3% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000065128Member"
      decimals="4"
      id="h_1428_98dacf32_097a_4f23_b7a6_0f9007a7f27f"
      unitRef="pure">0.03</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000065128Member"
      id="t_548_d533631e_bdb0_4cce_a846_4ffa82013945"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000065128Member"
      id="t_549_21bfd3d0_bf7a_4938_bf39_54d7af1d7230"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the S&amp;amp;P AMT-Free&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal Series Callable-Adjusted Dec 2027 Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5.5pt; position: relative; top: -3.75pt;"&gt;TM &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the performance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (as determined by S&amp;amp;P Dow Jones Indices LLC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), tax-exempt, U.S. municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, reducing callable bonds before 2027, and only including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-callable bonds maturing in 2027. As of October 31, 2024, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there were 13,184&#160;issues in the Underlying Index. The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index includes municipal bonds primarily from issuers that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. state, federal district (the District of Columbia), or local &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government or agency such that the interest on the bonds is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes and the federal alternative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum tax (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;AMT&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Bonds issued by U.S. territories and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Commonwealth of Puerto Rico are excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index.&#160;&#160;Each bond must have a rating of at least BBB- by S&amp;amp;P &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Ratings, Baa3 by Moody&#x2019;s Investors Service, Inc., or BBB- &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Fitch Ratings, Inc. and must have a minimum maturity par &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of $2 million to be eligible for inclusion in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. To remain in the Underlying Index, bonds must maintain a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum par amount greater than or equal to $2 million as of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each rebalancing reference date. All non-callable bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index will mature or be redeemed after December 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2026 and before December 2, 2027. Callable bonds are eligible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to the following: (i) a final maturity date after December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2026 and before December 2, 2027, and a next call date no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sooner than two years prior to index maturity year; or (ii) a final &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity up to four years after the index maturity year, if the next &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call date is within the index maturity range. In the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index year of maturity, bonds that mature or are pre-refunded in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their respective year of maturity do not accrue interest past the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or pre-refund date. A bond is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond has been refunded to a call date prior to maturity. In other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;words, a holder of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bond receives all payments of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest and principal back on an earlier date then the stated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity date of the bond. All payments related to the maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunding of a bond are reinvested in tax-exempt cash or cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents for the duration of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Outside of five years prior to the term of the Fund, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index will be market value weighted. Five years prior to the term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund, monthly rebalances occurring in rolling two year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods will remove bonds with a maturity year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund from the Underlying Index. Such rebalancing will begin &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with those bonds whose effective maturity date is furthest from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that of the Underlying Index. Each two year period will remove &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature in a specific year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. For example, bonds scheduled to mature in 2031 will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;removed from the Underlying Index over the course of a two year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;period beginning in January 2022. As a result, as of January 1, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2027, the Underlying Index will not contain bonds with an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effective maturity date later than December 2, 2027.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) sponsored by BlackRock, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series do not invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in U.S. savings bonds or other U.S. government bonds (except to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent the funds hold cash equivalent instruments consistent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with their investment objectives) and are not designed to provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;protection against inflation. The Fund does not invest in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal government agency bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, in each case except during the last months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund's operations, as described below. The Fund will invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index as well as in fixed income securities other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the types included in the Underlying Index, but which BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will generally hold municipal bond securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;state and local municipalities whose interest payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income tax, the federal AMT and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; including dividends, interest and capital gains.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds will not be reinvested in bonds but instead &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be held in cash and cash equivalents, including, without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitation, shares of money market funds advised by BFA or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates, AMT-free tax-exempt municipal notes, variable rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand notes and obligations, tender option bonds and municipal &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial paper. These cash equivalents may not be included in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. By December 2, 2027, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is expected to consist entirely of cash earned in this manner. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Around the same time, the Fund will wind up and terminate. After &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;appropriate provision is made for any Fund liabilities, its net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets will be distributed to then-current shareholders pursuant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to a plan of liquidation. The Fund's termination was approved by a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;majority of the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not require additional approval by Fund shareholders. The Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may extend the termination date if a majority of the Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by SPDJI, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000065128Member"
      id="t_1442_b856d35a_7dc2_0304_10f4_cc10e4d45a42">  Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.  </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000065128Member"
      id="t_550_7eaebd21_551a_4d55_91c3_d3b8764cf44d"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000065128Member_RiskLoseMoneyMember"
      id="t_1443_7fd63257_ac01_37a4_ff52_8991c20530e6">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_MunicipalSecuritiesRiskMember"
      id="t_1444_da52188e_c0d2_0fc3_b948_6cd935cf3020"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Municipal Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal securities can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly affected by political or economic changes, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes made in the law after issuance of the securities, as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as uncertainties in the municipal market related to taxation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative changes or the rights of municipal security holders, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including in connection with an issuer insolvency. Municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities backed by current or anticipated revenues from a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;specific project or specific assets can be negatively affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the inability to collect revenues from such projects or assets. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Certain municipal securities are issued by entities with limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxing authority such as school districts, or are dependent on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;revenue from a particular sector or industry, such as the utilities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector, infrastructure sector, or transportation industry. In the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;event of a default or insolvency, certain issuers of municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds may be subject to proceedings other than those specified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by U.S. bankruptcy laws, which may impact the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ultimately recover assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_RiskOfInvestingInTheUSMember"
      id="t_1445_99b3e47f_8cc5_0e2e_41c8_7ea25fb1d92f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_InterestRateRisksMember"
      id="t_1446_19b2cef7_65a2_a3b9_b59a_acf54d402555"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_MarketRiskMember"
      id="t_1447_2fd23b5c_4b5f_562b_604a_3a39920626f5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_IndexRelatedRiskMember"
      id="t_1448_f0394d4d_2f03_a298_6f2b_7fb04d72ea88"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000065128Member_AssetClassRiskMember"
      id="t_1449_75479271_9f49_c67c_2a71_141791e3bc26"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1450_eae4bcf0_2b38_1a64_a2dd_50dc258b0786"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000065128Member_CallRiskMember"
      id="t_1451_ae9170ed_ada3_4807_d0b8_57a7c7306760"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features. Issuers of longer maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be more likely to call such securities as interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates fall. As a result, the Fund's investment in certain callable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside the term of the Fund may increase the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likelihood that securities held by the Fund are called prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 2, 2027.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_ConcentrationRiskMember"
      id="t_1452_91709719_a816_e7ec_34d2_fca926c5be78"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_CreditRisksMember"
      id="t_1453_6ce9d840_6ad5_b28f_e97e_ee00782acdab"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_CybersecurityRiskMember"
      id="t_1454_5bafac24_9fc6_da99_2c3f_ff80dcbff5a0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000065128Member_DecliningYieldRiskMember"
      id="t_1455_4fe85335_b557_93f9_c6ed_8f0796dd6af5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the final eleven months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's planned termination date, its yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_1456_7be29b63_199d_33ee_1b40_2a3622e5f1b7"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a municipal bond that has a level &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payment and a fixed payment at maturity, will make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions of income that vary over time. It is expected that an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund, if held through maturity, will produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate returns comparable to a direct investment in a group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds of similar credit quality and maturity. Unlike a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;direct investment in municipal bonds, the breakdown of returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;between Fund distributions and liquidation proceeds are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predictable at the time of your investment. For example, at times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;during the Fund's existence it may make distributions at a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or lesser) rate than the coupon payments received on the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio, which would result in the Fund returning a lesser (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater) amount on liquidation than would otherwise be the case. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The rate of Fund distribution payments may adversely affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax characterization of your returns from an investment in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund relative to a direct investment in municipal bonds. If the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount you receive as liquidation proceeds upon the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination is higher or lower than your cost basis, you may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience a gain or loss for tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_IlliquidInvestmentsRiskMember"
      id="t_1457_1670fe3e_ba48_db7c_ca69_17ba0f1bc684"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_IncomeRiskMember"
      id="t_1458_5a935c5c_dbf3_7685_771f_65668baacd9c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_IssuerRiskMember"
      id="t_1459_ebb5a697_bca5_122a_f448_c4c16cc878ea"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1460_663c594e_ec1e_a44b_e660_9335024e3183"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_ManagementRiskMember"
      id="t_1461_3384e520_92f2_5794_1e6f_3b287d00f164"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_MarketTradingRiskMember"
      id="t_1462_dd25ab7d_3f9f_ac2a_57bf_8416aae307f7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_OperationalRiskMember"
      id="t_1463_79b525c1_18df_8770_8ecf_056919890b02"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_TaxRiskMember"
      id="t_1464_7ade58a7_9f33_f933_629a_e55c1c72d524"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; There is no guarantee that the Fund's income will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes, the federal AMT or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_TrackingErrorRiskMember"
      id="t_1465_a4ca115b_f050_a3db_c175_017ee3a470b9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds are an investment focus may experience higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065128Member_ValuationRiskMember"
      id="t_1466_738d3fd6_8e6c_ef01_fc7b_77dc74f675ab"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000065128Member"
      id="t_551_bc96ed32_5b81_477b_9888_01102713686e"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000065128Member"
      id="t_1467_97488b08_047a_ff19_06da_e19b9844e245"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000065128Member"
      id="t_1481_45995653_5632_87ad_1d86_512ccd27c9e2">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000065128Member"
      id="t_1469_197a3079_27ce_7ebb_eb32_4a8c60829366">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000065128Member"
      id="t_1470_09362ca7_25fc_4afc_617f_58277f75afa5">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000065128Member"
      id="t_1471_cb8027df_f380_b9a7_ac99_febac4eed423">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000065128Member"
      id="t_1472_1853d3b3_9532_c89b_4e6b_bc0fba843d31"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000065128Member"
      id="t_1473_8db2deba_6209_5216_a1fa_efdb2170aa59"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.78pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.78pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.17pt;"&gt;4.46%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.78pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.78pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.76%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000065128Member_C000210857Member"
      id="h_1432_55a58b7c_de71_4962_88e7_a3d153683217">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1433_2b4a6818_63f2_40a7_9534_2690b65e1269"
      unitRef="pure">0.0446</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000065128Member_C000210857Member"
      id="h_1434_fb6570f1_1a32_4462_930b_8cd48fc0e794">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000065128Member_C000210857Member"
      id="h_1435_3c812c66_65ae_4046_8abc_bf5d37e1fb71">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1436_f89bc2f2_aff2_4e50_91fc_a90eb17ffade"
      unitRef="pure">-0.0576</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000065128Member_C000210857Member"
      id="h_1437_3fe4e07c_10bc_41ab_a167_83241fc67a44">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000065128Member"
      id="t_553_c0bb5a2e_ad28_476f_90a7_efc45ae88bfb">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000065128Member_C000210857Member"
      id="t_1478_b07a85a7_1bbb_69a4_034c_d20499b605f8">2019-04-09</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1438_dbf1f102_1b3c_44db_a8a2_338d852e47e8"
      unitRef="pure">0.0141</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1439_aee84846_1f71_4421_8dea_ca65d24f4856"
      unitRef="pure">0.0086</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065128Member_C000210857Member"
      decimals="4"
      id="h_1440_9667c9de_85d4_47fb_b02d_598596c2e15f"
      unitRef="pure">0.0164</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065128Member_C000210857Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1441_48dfa6eb_79d4_4df2_901a_fd592a57323b"
      unitRef="pure">0.0141</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065128Member_C000210857Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1442_e5502345_3b46_4192_b4bc_ef9d18455e39"
      unitRef="pure">0.0086</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065128Member_C000210857Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1443_66f1d4a3_4419_4221_b5c3_2abea4c634c3"
      unitRef="pure">0.0164</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065128Member_C000210857Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1444_19498a0a_7df6_4e40_b8d7_4dd3aee9c8cd"
      unitRef="pure">0.0179</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065128Member_C000210857Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1445_72bf9acf_a3d6_45a5_b60d_47e9a973b293"
      unitRef="pure">0.0102</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065128Member_C000210857Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1446_cbfcd547_3c80_41dd_8c8c_48d828542014"
      unitRef="pure">0.0162</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065128Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1447_153e88dd_43c4_4e03_8b02_378a9f45935d"
      unitRef="pure">0.0153</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065128Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1448_e269d55a_6266_4db4_82d8_3d4c0a9c44f9"
      unitRef="pure">0.0107</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065128Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1449_a9ee96f7_0f50_4b04_840a_1d7c946df1aa"
      unitRef="pure">0.0170</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065128Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2027IndexMember"
      decimals="4"
      id="h_1450_ec17dfc0_b6c6_4539_aabb_da360dd4c298"
      unitRef="pure">0.0169</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065128Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2027IndexMember"
      decimals="4"
      id="h_1451_d410ac2a_e3d9_4f66_90fb_63a2f6ef24ba"
      unitRef="pure">0.0095</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065128Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2027IndexMember"
      decimals="4"
      id="h_1452_a53780c3_542a_4551_a416_b27b7f5fc4b9"
      unitRef="pure">0.0173</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000065128Member"
      id="t_1474_149b9c04_4c62_8884_acad_2efdf88508a0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000065128Member"
      id="t_1475_402dbed2_a1fe_a23e_9877_54d361cd8d4f">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000065128Member"
      id="t_1476_7df42e25_dc54_cdb5_7d45_e9ede3960083">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000065128Member"
      id="t_1477_f7993b31_fc5a_7544_12a5_a87ab40550fa">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000065129Member"
      id="t_1511_64a91374_aa6f_48c6_9285_93591507b07c">iSHARES&#xae; iBONDS&#xae; DEC 2028 TERM MUNI BOND ETFTicker: IBMQStock Exchange: Cboe BZX </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000065129Member"
      id="t_554_77553c51_196f_42df_b25b_4f32cd6eaa5c">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000065129Member"
      id="t_555_77d43ad7_7e9c_4988_9684_c60bfa80053c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2028 Term Muni Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. municipal bonds expected to mature or be redeemed before December 2, 2028.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000065129Member"
      id="t_556_8382e9ee_ff2c_440f_b819_868e522e7674">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000065129Member"
      id="t_557_2d6dc2b5_1c36_4266_a5e0_2c7e52fe702c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000065129Member"
      id="t_1470_4dd54115_3911_b6b4_f398_794e24e6e91d">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1453_59afca40_ae16_4800_a459_1a36fc5579d6"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1454_efe99699_2e28_43b3_b9ca_90d28c53fc84"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1455_c6b09bf6_3e75_4ed0_954e_00bc971889bb"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1456_3e014e56_1886_4ac9_877c_4b0d566c1c9b"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000065129Member"
      id="t_1471_cfbb6da9_37c2_bccc_060d_c24c7633f05f">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000065129Member"
      id="t_1512_2172aacf_f5d7_f016_4b2b_b6ca612cdf0c">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2028 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000065129Member_C000210858Member"
      decimals="INF"
      id="h_1457_e534cf88_beec_4484_96ce_cb700342eac8"
      unitRef="USD">18</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000065129Member_C000210858Member"
      decimals="INF"
      id="h_1458_6b61770c_5dd1_41c0_b3b9_7442d8b7b4f9"
      unitRef="USD">58</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000065129Member_C000210858Member"
      decimals="INF"
      id="h_1459_01167bd7_1197_4f71_aa9e_a7ae1de41234"
      unitRef="USD">75</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000065129Member"
      id="t_1472_84fd7f87_ccf8_59ad_744c_5bd007a8fb5f">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000065129Member"
      id="t_1473_c5f72497_5956_5146_4e26_edad809880a7">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 3% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000065129Member"
      decimals="4"
      id="h_1460_b6ab4933_9768_4711_b399_4cc4087eb723"
      unitRef="pure">0.03</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000065129Member"
      id="t_559_ad14d313_3cad_45be_ab00_b41fc26090dd"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000065129Member"
      id="t_560_b2cd7a08_fdfa_4dea_a842_b56429584e5a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the S&amp;amp;P AMT-Free&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal Series Callable-Adjusted Dec 2028 Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5.5pt; position: relative; top: -3.75pt;"&gt;TM &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which measures the performance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment-grade (as determined by S&amp;amp;P Dow Jones Indices LLC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), tax-exempt, U.S. municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds, reducing callable bonds before 2028, and only including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-callable bonds maturing in 2028. As of October 31, 2024, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;there were 11,720&#160;issues in the Underlying Index. The Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index includes municipal bonds primarily from issuers that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. state, federal district (the District of Columbia), or local &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government or agency such that the interest on the bonds is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes and the federal alternative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum tax (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;AMT&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Bonds issued by U.S. territories and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Commonwealth of Puerto Rico are excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. Each bond must have a rating of at least BBB- by S&amp;amp;P &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Ratings, Baa3 by Moody&#x2019;s Investors Service, Inc., or BBB- &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Fitch Ratings, Inc. and must have a minimum maturity par &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of $2 million to be eligible for inclusion in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. To remain in the Underlying Index, bonds must maintain a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum par amount greater than or equal to $2 million as of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each rebalancing reference date. All non-callable bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index will mature or be redeemed after December 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2027 and before December 2, 2028. Callable bonds are eligible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to the following: (i) a final maturity date after December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2027 and before December 2, 2028, and a next call date no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sooner than two years prior to final maturity; or (ii) a final maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;up to four years after the index maturity year, if the next call date &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is within the index maturity range. In the Underlying Index year of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity, bonds that mature or are pre-refunded in their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;respective year of maturity do not accrue interest past the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or pre-refund date. A bond is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond has been refunded to a call date prior to maturity. In other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;words, a holder of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bond receives all payments of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest and principal back on an earlier date then the stated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity date of the bond. All payments related to the maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunding of a bond are reinvested in tax-exempt cash or cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents for the duration of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Outside of five years prior to the term of the Fund, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index will be market value weighted. Five years prior to the term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund, monthly rebalances occurring in rolling two year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods will remove bonds with a maturity year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund from the Underlying Index. Such rebalancing will begin &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with those bonds whose effective maturity date is furthest from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that of the Underlying Index. Each two year period will remove &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature in a specific year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund.&#160;&#160;For example, bonds scheduled to mature in 2032 will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be removed from the Underlying Index over the course of a two &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year period beginning in January 2023. As a result, as of January 1, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2028, the Underlying Index will not contain bonds with an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effective maturity date later than December 2, 2028. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) sponsored by BlackRock, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series do not invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in U.S. savings bonds or other U.S. government bonds (except to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent the funds hold cash equivalent instruments consistent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with their investment objectives) and are not designed to provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;protection against inflation. The Fund does not invest in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal government agency bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, in each case except during the last months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund's operations, as described below. The Fund will invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index as well as in fixed income securities other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the types included in the Underlying Index, but which BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will generally hold municipal bond securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;state and local municipalities whose interest payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income tax, the federal AMT and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; including dividends, interest and capital gains.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds will not be reinvested in bonds but instead &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be held in cash and cash equivalents, including, without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitation, shares of money market funds advised by BFA or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates, AMT-free tax-exempt municipal notes, variable rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand notes and obligations, tender option bonds and municipal &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial paper. These cash equivalents may not be included in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. By December 2, 2028, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is expected to consist entirely of cash earned in this manner. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Around the same time, the Fund will wind up and terminate. After &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;appropriate provision is made for any Fund liabilities, its net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets will be distributed to then-current shareholders pursuant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to a plan of liquidation. The Fund's termination was approved by a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;majority of the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not require additional approval by Fund shareholders. The Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may extend the termination date if a majority of the Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by SPDJI, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000065129Member"
      id="t_1474_150dceed_1845_0c28_a86a_1b8f6f77e888"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000065129Member"
      id="t_561_e0e460a5_8e70_4c93_8879_7c2019fed985"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000065129Member_RiskLoseMoneyMember"
      id="t_1475_986448fc_4cc7_82f3_ca4c_926b2e8aa169">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_MunicipalSecuritiesRiskMember"
      id="t_1476_cf16114c_f0cc_d159_7048_802caa9bf950"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Municipal Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal securities can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly affected by political or economic changes, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes made in the law after issuance of the securities, as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as uncertainties in the municipal market related to taxation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative changes or the rights of municipal security holders, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including in connection with an issuer insolvency. Municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities backed by current or anticipated revenues from a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;specific project or specific assets can be negatively affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the inability to collect revenues from such projects or assets. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Certain municipal securities are issued by entities with limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxing authority such as school districts, or are dependent on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;revenue from a particular sector or industry, such as the utilities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector, infrastructure sector, or transportation industry. In the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;event of a default or insolvency, certain issuers of municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds may be subject to proceedings other than those specified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by U.S. bankruptcy laws, which may impact the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ultimately recover assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_RiskOfInvestingInTheUSMember"
      id="t_1477_b01b616e_293b_b1f0_ba31_fe18b08f938d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_InterestRateRisksMember"
      id="t_1478_5efc4f17_31c6_610f_5096_29e903c627ef"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_MarketRiskMember"
      id="t_1479_833e264d_862d_2f72_7d15_5ec988235077"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_IndexRelatedRiskMember"
      id="t_1480_8de285e5_4433_c119_ab31_4a1026be17be"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_AssetClassRiskMember"
      id="t_1481_789e36db_54d3_098f_0e3f_8c230c4c940d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1482_e4e3797a_331e_00ec_df7f_d7e2eb5c065b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_CallRiskMember"
      id="t_1483_d9316837_9194_d183_0676_bbbd92e9bc15"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features. Issuers of longer maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be more likely to call such securities as interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates fall. As a result, the Fund's investment in certain callable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside the term of the Fund may increase the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likelihood that securities held by the Fund are called prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 2, 2028.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_ConcentrationRiskMember"
      id="t_1484_27a88354_1c59_aacb_07a9_b23a9e761da3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_CreditRisksMember"
      id="t_1485_2da9f5c4_2b70_edf3_7bb0_0944d24062a4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_CybersecurityRiskMember"
      id="t_1486_e93de0b5_1948_6eb2_d0e1_138b884dea4a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_DecliningYieldRiskMember"
      id="t_1487_732a7687_7d45_e86f_ff52_4f4bcde24561"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the final eleven months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's planned termination date, its yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_1488_3ca637d4_20a3_825e_c98c_86485fe5205e"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a municipal bond that has a level &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payment and a fixed payment at maturity, will make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions of income that vary over time. It is expected that an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund, if held through maturity, will produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate returns comparable to a direct investment in a group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds of similar credit quality and maturity. Unlike a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;direct investment in municipal bonds, the breakdown of returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;between Fund distributions and liquidation proceeds are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predictable at the time of your investment. For example, at times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;during the Fund's existence it may make distributions at a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or lesser) rate than the coupon payments received on the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio, which would result in the Fund returning a lesser (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater) amount on liquidation than would otherwise be the case. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The rate of Fund distribution payments may adversely affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax characterization of your returns from an investment in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund relative to a direct investment in municipal bonds. If the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount you receive as liquidation proceeds upon the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination is higher or lower than your cost basis, you may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience a gain or loss for tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_IlliquidInvestmentsRiskMember"
      id="t_1489_4b635007_6633_333a_9997_970033f20b91"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_IncomeRiskMember"
      id="t_1490_32996823_7626_7daa_4c95_041bc5511a6e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_IssuerRiskMember"
      id="t_1491_dd9010a2_594b_2c5c_3d01_1dd798ac7709"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1492_60fc794f_2d5f_92ed_a992_19c8b049b668"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_ManagementRiskMember"
      id="t_1493_421c179c_148e_0a54_3361_826a3f2728d5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_MarketTradingRiskMember"
      id="t_1494_1512026e_f167_86db_2c85_0fe3829cf7cd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_OperationalRiskMember"
      id="t_1495_14c80d6d_f8be_609c_1623_722acabeb93a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_TaxRiskMember"
      id="t_1496_5b786ca1_2830_11ea_d35c_2f2efe73662f"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; There is no guarantee that the Fund's income will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes, the federal AMT or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_TrackingErrorRiskMember"
      id="t_1497_2d27ad5d_fd26_92ab_ddd1_22d6bfad3730"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds are an investment focus may experience higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000065129Member_ValuationRiskMember"
      id="t_1498_b0875099_f98b_dfea_5143_b3f19bef1a6a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000065129Member"
      id="t_562_18f9fad8_4020_4b61_a671_9fff4d288d0b"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000065129Member"
      id="t_1499_2648c813_4082_98e2_f93c_4100d0282bf5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000065129Member"
      id="t_1500_7c9b3a74_37a2_91ec_60d9_18f6bd8e526c">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000065129Member"
      id="t_1501_cb5e893f_2ebd_0aa6_2773_3ada98a078e7">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000065129Member"
      id="t_1502_c56cd503_3b8b_d47b_0485_fa58bf5d7092">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000065129Member"
      id="t_1503_8a8ac6e2_ba67_6128_1e0d_323526aec3df">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000065129Member"
      id="t_1504_120b87fa_b946_9693_2db5_b672de88b701"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000065129Member"
      id="t_1505_ac449272_396f_14a5_bf00_63bf81a1d62d"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.29pt;"&gt;5.48%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-6.37%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000065129Member_C000210858Member"
      id="h_1464_235d477d_bb11_4f6c_b6fd_2c747851ff1c">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1465_0912c620_db69_4baa_94f5_a33cacd3993d"
      unitRef="pure">0.0548</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000065129Member_C000210858Member"
      id="h_1466_09c132c0_7a6c_498a_a918_ff63a7b22df8">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000065129Member_C000210858Member"
      id="h_1467_7f0f32d8_86fb_479e_87c1_870bea1e6e0a">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1468_8b3dda64_a307_4f1f_8f0b_0c738653b06f"
      unitRef="pure">-0.0637</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000065129Member_C000210858Member"
      id="h_1469_b0f9c0f2_3488_4320_9d95_7f404f7a86ed">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000065129Member"
      id="t_564_23607cfa_08df_4bba_b156_79f41dac6d67">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000065129Member_C000210858Member"
      id="t_1510_4cb26ad2_7835_cb54_6799_a9941e905d98">2019-04-16</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1470_1afe1515_090b_4f60_b635_c89fd5cd0a3d"
      unitRef="pure">0.0075</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1471_9b3698d9_cb4f_4485_8210_c9a051328d26"
      unitRef="pure">0.0080</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065129Member_C000210858Member"
      decimals="4"
      id="h_1472_70dd2ab6_849a_4536_b7d9_ff449cd3e013"
      unitRef="pure">0.0167</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065129Member_C000210858Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1473_49c545fc_e252_4bac_a637_f3654964cdb2"
      unitRef="pure">0.0075</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065129Member_C000210858Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1474_028256db_5951_4ee9_8789_0146c7b47a10"
      unitRef="pure">0.0080</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065129Member_C000210858Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1475_8ed59657_3d41_4c34_afa6_f6aa43d99aab"
      unitRef="pure">0.0167</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065129Member_C000210858Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1476_7bf99a07_1df3_4682_8ff7_f53e49ed67da"
      unitRef="pure">0.0139</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065129Member_C000210858Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1477_0a2868f4_69f2_41a3_b740_50f35793d8e5"
      unitRef="pure">0.0098</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065129Member_C000210858Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1478_c006330e_2a30_4a20_b3cb_b42f9f783224"
      unitRef="pure">0.0166</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065129Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1479_32c98e3b_9172_4cfc_bf4a_bc1180d40118"
      unitRef="pure">0.0153</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065129Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1480_155d9397_7aeb_4e13_8e14_3b3d10d285e2"
      unitRef="pure">0.0107</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065129Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1481_2463ad48_0466_4f74_b6ee_1b0bf01309d6"
      unitRef="pure">0.0170</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000065129Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2028IndexMember"
      decimals="4"
      id="h_1482_5cb10b98_3bd7_4446_9e19_f584176fed19"
      unitRef="pure">0.0111</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000065129Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2028IndexMember"
      decimals="4"
      id="h_1483_1a750f94_823b_495d_9020_0ce98d3f7a99"
      unitRef="pure">0.0084</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000065129Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2028IndexMember"
      decimals="4"
      id="h_1484_e5065694_2cf2_455b_8c64_40306e00e119"
      unitRef="pure">0.0169</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000065129Member"
      id="t_1506_ae4429eb_388a_16b4_9c36_7bbbe3340f8a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000065129Member"
      id="t_1507_e3ceefda_a6b9_c3f0_f5cf_dc1c6bda6d3f">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000065129Member"
      id="t_1508_1dee582b_40c4_2762_e578_7e86a41fc52c">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000065129Member"
      id="t_1509_af526ebf_9a4d_9ac0_b7df_02bb6d450bee">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080345Member"
      id="t_1502_8fdc0e68_bb7a_46e5_dd9f_21dbc67932ef"> iSHARES&#xae; iBONDS&#xae; DEC 2029 TERM MUNI BOND ETF  Ticker: IBMRStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080345Member"
      id="t_565_f24918ec_dcf2_43ea_a74f_5d3ec30bee54">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080345Member"
      id="t_566_b57c2e17_bca1_43f6_a262_df32253ebcd9"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2029 Term Muni Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. municipal bonds expected to mature or be redeemed before December 2, 2029.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080345Member"
      id="t_567_107e096e_be14_43da_a5b8_e037d37808ae">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080345Member"
      id="t_568_cff23b12_53d3_4d7e_89a2_c7e1310c8f16"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000080345Member"
      id="t_1503_0a51fa6d_ff83_fbf5_8638_029145dc9faa">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1485_95c594c4_2736_4bd7_a0bb_787dda39d859"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1486_861f3785_167a_4129_a4d1_2bc7e92502ff"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1487_d4159e70_9668_4a21_a745_42fca3ad7aea"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1488_82bc9047_1192_4d22_bfe6_b24b764bfd79"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080345Member"
      id="t_1504_8685b357_27d6_153d_5fad_3e12b4eb6f4a">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080345Member"
      id="t_1505_67843d57_24f7_c1be_36bf_cca1f2d0b37f">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2029 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080345Member_C000242692Member"
      decimals="INF"
      id="h_1489_0b5a6f4a_f347_49f8_938d_24d213028f5f"
      unitRef="USD">18</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080345Member_C000242692Member"
      decimals="INF"
      id="h_1490_b753617b_70ab_48fc_aaa7_93d34f41ac59"
      unitRef="USD">58</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000080345Member_C000242692Member"
      decimals="INF"
      id="h_1491_64a0e3fb_30eb_4ab0_9051_fa4e282a6b5c"
      unitRef="USD">97</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080345Member"
      id="t_1506_0b050648_07d6_5c26_b3e1_8c084ecf99c0">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080345Member"
      id="t_1507_88666fb0_757e_7acb_3795_208df4899257">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080345Member"
      decimals="4"
      id="h_1492_ed3c0c6e_7247_419f_be8d_78ccd861e957"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080345Member"
      id="t_570_c88db5d7_a9cf_47aa_a94b_5335558bc732"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080345Member"
      id="t_571_ce21d467_e4a0_4f6f_8c6a_2341581a055c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the S&amp;amp;P AMT-Free&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal Series Callable-Adjusted Dec 2029 Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5.5pt; position: relative; top: -3.75pt;"&gt;TM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is a market-value-weighted index that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seeks to measure the performance of investment-grade (as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determined by S&amp;amp;P Dow Jones Indices LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), tax-exempt, U.S. municipal bonds, reducing callable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds before 2029, and only including non-callable bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturing in 2029. As of October 31, 2024, there were &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;9,995&#160;issues in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes municipal bonds from issuers that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are U.S. state, federal district (the District of Columbia), or local &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government or agency such that the interest on the bonds is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes and the federal alternative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum tax (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;AMT&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Bonds issued by U.S. territories and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Commonwealth of Puerto Rico are excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. Each bond must have a rating of at least BBB- by S&amp;amp;P &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Ratings, Baa3 by Moody&#x2019;s Investors Service, Inc., or BBB- &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Fitch Ratings, Inc. (except in the case of a pre-refunded/escrowed&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to maturity bond). Each bond must be rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by at least one of the rating agencies. The Index Provider will use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the lowest rating in determining if a bond is investment grade. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, each bond must have a minimum maturity par amount of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;$2 million to be eligible for inclusion in the Underlying Index. To &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remain in the Underlying Index, bonds must maintain a minimum &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;par amount greater than or equal to $2 million as of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing reference date. All non-callable bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index will mature or be redeemed after December 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2028 and before December 2, 2029. Callable bonds are eligible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to the following: (i) a final maturity date after December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2028 and before December 2, 2029, and a next call date no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sooner than two years prior to final maturity; or (ii) a final maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;up to four years after the index maturity year, if the next call date &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is within the index maturity range. Prior to the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year of maturity, redeemed bonds are represented as cash until &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the subsequent monthly rebalancing date during which eligible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds are added to the Underlying Index. In the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year of maturity, bonds that mature or are pre-refunded in their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;respective year of maturity do not accrue interest past the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or pre-refund date. A bond is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond has been refunded to a call date prior to maturity. In other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;words, a holder of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bond receives all payments of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest and principal back on an earlier date then the stated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity date of the bond. All payments related to the maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunding of a bond are reinvested in tax-exempt cash or cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents for the duration of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Outside of five years prior to the term of the Fund, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index will be market value weighted. Five years prior to the term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund, monthly rebalances occurring in rolling two year &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods will remove bonds with a maturity year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund from the Underlying Index. Such rebalancing will begin &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with those bonds whose effective maturity date is furthest from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that of the Underlying Index. Each two year period will remove &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature in a specific year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. For example, bonds scheduled to mature in 2033 will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;removed from the Underlying Index over the course of a two year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;period beginning in January 2024. As a result, as of January 1, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2029, the Underlying Index will not contain bonds with an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effective maturity date later than December 2, 2029. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) sponsored by BlackRock, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series do not invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in U.S. savings bonds or other U.S. government bonds (except to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent the funds hold cash equivalent instruments consistent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with their investment objectives) and are not designed to provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;protection against inflation. The Fund does not invest in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal government agency bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, in each case except during the last months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund's operations, as described below. The Fund will invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index as well as in fixed income securities other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the types included in the Underlying Index, but which BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will generally hold municipal bond securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;state and local municipalities whose interest payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income tax, the federal AMT and the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; including dividends, interest and capital gains.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds will not be reinvested in bonds but instead &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be held in cash and cash equivalents, including, without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitation, shares of money market funds advised by BFA or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates, AMT-free tax-exempt municipal notes, variable rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand notes and obligations, tender option bonds and municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial paper. These cash equivalents may not be included in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. By December 2, 2029, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is expected to consist entirely of cash earned in this manner. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Around the same time, the Fund will wind up and terminate. After &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;appropriate provision is made for any Fund liabilities, its net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets will be distributed to then-current shareholders pursuant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to a plan of liquidation. The Fund's termination was approved by a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;majority of the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not require additional approval by Fund shareholders. The Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may extend the termination date if a majority of the Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by SPDJI, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000080345Member"
      id="t_1508_aa9380f3_f00c_b88b_f602_e8fafef2c6a5"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000080345Member"
      id="t_572_98d65bfe_8536_43e8_a1f3_e14c7af085a0"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080345Member_RiskLoseMoneyMember"
      id="t_1509_1b4f6277_dda5_ada0_74a7_4b774f7ea182">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_MunicipalSecuritiesRiskMember"
      id="t_1522_a9f6f0c2_b0ac_3f33_f690_b5e58ebde8e6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Municipal Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal securities can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly affected by political or economic changes, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes made in the law after issuance of the securities, as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as uncertainties in the municipal market related to taxation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative changes or the rights of municipal security holders, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including in connection with an issuer insolvency. Municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities backed by current or anticipated revenues from a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;specific project or specific assets can be negatively affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the inability to collect revenues from such projects or assets. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Certain municipal securities are issued by entities with limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxing authority such as school districts, or are dependent on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;revenue from a particular sector or industry, such as the utilities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector, infrastructure sector, or transportation industry. In the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;event of a default or insolvency, certain issuers of municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds may be subject to proceedings other than those specified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by U.S. bankruptcy laws, which may impact the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ultimately recover assets.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_RiskOfInvestingInTheUSMember"
      id="t_1523_17acf7b2_411a_684a_30c1_549820071473">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_InterestRateRisksMember"
      id="t_1524_fbfd0773_f653_d5ec_b9ac_3e368cd7524f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_MarketRiskMember"
      id="t_1525_ffdac475_df2a_10c2_1b8c_90cb411da63e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_IndexRelatedRiskMember"
      id="t_1526_d91f1f35_de38_d2b0_fab2_066df79f3b0a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_AssetClassRiskMember"
      id="t_1527_af37f8d8_724f_213d_c9f6_aa980fe0563f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1528_75a14515_3303_ff82_4259_4e9a4d9386cc">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_CallRiskMember"
      id="t_1529_fb73d81d_fbe6_ea2e_6810_b440d8143e14">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features. Issuers of longer maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be more likely to call such securities as interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates fall. As a result, the Fund's investment in certain callable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside the term of the Fund may increase the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likelihood that securities held by the Fund are called prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 2, 2029.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_ConcentrationRiskMember"
      id="t_1530_1b22234a_8ea1_f2d6_53d5_1501f4dc12b1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_CreditRisksMember"
      id="t_1531_aea0eec1_1c2c_0e04_d45b_3d122ff38a8d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_CybersecurityRiskMember"
      id="t_1532_8daed005_b86d_88c1_b48d_fad7d6b15cb7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_DecliningYieldRiskMember"
      id="t_1533_af89c642_59a9_16aa_c8d8_e502160afe6d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the final eleven months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's planned termination date, its yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_1534_7d67ab0d_e297_7ecd_ca95_da6d0b428043">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a municipal bond that has a level &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payment and a fixed payment at maturity, will make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions of income that vary over time. It is expected that an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund, if held through maturity, will produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate returns comparable to a direct investment in a group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds of similar credit quality and maturity. Unlike a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;direct investment in municipal bonds, the breakdown of returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;between Fund distributions and liquidation proceeds are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predictable at the time of your investment. For example, at times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;during the Fund's existence it may make distributions at a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or lesser) rate than the coupon payments received on the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio, which would result in the Fund returning a lesser (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater) amount on liquidation than would otherwise be the case. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The rate of Fund distribution payments may adversely affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax characterization of your returns from an investment in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund relative to a direct investment in municipal bonds. If the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount you receive as liquidation proceeds upon the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination is higher or lower than your cost basis, you may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience a gain or loss for tax purposes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_IlliquidInvestmentsRiskMember"
      id="t_1535_e27ed9bb_d203_5876_9ac9_16ede25a3817">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_IncomeRiskMember"
      id="t_1536_f4a48cd4_28f9_f8f9_2afd_474714fcee60">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_IssuerRiskMember"
      id="t_1537_2de4f269_9038_ae60_ee29_8eb961cbadb0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_1538_46a1d998_18fa_ddd6_d3bc_71d921b7f8a7">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_ManagementRiskMember"
      id="t_1539_12b5a0b7_48e6_e415_5a99_f18a9955dc35">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_MarketTradingRiskMember"
      id="t_1540_d4c2e58a_5952_0992_b7be_4b0d9ae49ae0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_RiskNondiversifiedStatusMember"
      id="t_1541_c4b34755_72c3_42ed_5b74_c597fab543d4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_OperationalRiskMember"
      id="t_1542_5c928e7a_a980_ccce_da7a_1642ddb97350">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_TaxRiskMember"
      id="t_1543_b18268a2_394f_e63b_331c_c05b3e9703b9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; There is no guarantee that the Fund's income will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes, the federal AMT or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_TrackingErrorRiskMember"
      id="t_1544_aa399c7e_b183_b1df_7b73_0bb91a900d64">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds are an investment focus may experience higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error than ETFs that do not track such indexes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080345Member_ValuationRiskMember"
      id="t_1545_60df3131_eda8_6410_a3f4_20df8d6ce467">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080345Member"
      id="t_573_85c93974_b7e7_4bab_90a5_74a74684c2dd"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080345Member"
      id="t_1510_dd2a0e6a_7533_a253_ae6d_06fe5441595a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080345Member"
      id="t_1511_5c2b39ad_94e8_8ec7_e2c4_406ffe2b8e78">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080345Member"
      id="t_1512_d711e5a2_93df_cce2_db93_dd9b8ae97810">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080345Member"
      id="t_1514_c62fb785_4cdd_cf81_5fe2_cf5987c11eb6">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080345Member"
      id="t_1513_43729584_d21a_b848_4506_9433032bfe30">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080345Member"
      id="t_1515_0eb256f9_4e20_7ab0_08e7_63bb773270d7"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080345Member"
      id="t_1516_5ce04dba_20bb_6295_4275_6ac1edae5872"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.11pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.11pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.45pt;"&gt;3.22%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.11pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.11pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-1.26%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080345Member_C000242692Member"
      id="h_1496_e2ac27c0_3dd3_43be_bd41_dee0765cb9c7">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1497_c1b5449d_a345_4363_8ff9_dbb2f4fcc227"
      unitRef="pure">0.0322</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080345Member_C000242692Member"
      id="h_1498_5c36b10c_5e84_4769_9d2e_59863d6a97c2">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080345Member_C000242692Member"
      id="h_1499_1fb49992_4982_4dd5_9dc4_a4abdbac458b">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1500_489e8b89_60cd_44a7_9372_dc383a0fa5ef"
      unitRef="pure">-0.0126</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080345Member_C000242692Member"
      id="h_1501_c82a80fb_93f4_48d9_91be_b42c1c15431f">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080345Member"
      id="t_575_87f3d8f5_a80a_464e_8a8e_096ffd8c545c">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080345Member_C000242692Member"
      id="t_1517_44bb1a6e_b314_1b9b_0794_ba9d3300de36">2023-05-09</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1502_573710f2_a932_4c2c_bcb3_b89849fc2514"
      unitRef="pure">0.0013</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080345Member_C000242692Member"
      decimals="4"
      id="h_1503_381f93c1_85ac_444c_9641_81a08e0aac69"
      unitRef="pure">0.0216</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080345Member_C000242692Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1504_d6178b1a_2f29_485d_89c0_01743323e4c1"
      unitRef="pure">0.0013</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080345Member_C000242692Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1505_a366e1c7_259f_4561_a071_2f76f4145692"
      unitRef="pure">0.0216</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080345Member_C000242692Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1506_05304efb_cac5_4e8b_8fd7_98ca8af47b7c"
      unitRef="pure">0.0110</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080345Member_C000242692Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1507_36372812_25c1_4e90_aad0_62d1d62f5b21"
      unitRef="pure">0.0221</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080345Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1508_1c47b4bf_2f0c_4ee2_a26b_f6c76b6d0a62"
      unitRef="pure">0.0153</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080345Member_SAndPMunicipalBondIndexMember"
      decimals="4"
      id="h_1509_932215a7_d328_4893_8cf0_bf19cdc86315"
      unitRef="pure">0.0280</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080345Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2029IndexMember"
      decimals="4"
      id="h_1510_db996cca_c5c0_427d_9f52_f0c808ae48ba"
      unitRef="pure">0.0035</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080345Member_SAndPAMTFreeMunicipalSeriesCallableAdjustedDec2029IndexMember"
      decimals="4"
      id="h_1511_40be2fdf_20cb_480f_9d1f_6cc83718387d"
      unitRef="pure">0.0137</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080345Member"
      id="t_1518_443be035_6133_c2a3_bc5a_0bcc9483fde1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080345Member"
      id="t_1519_14b7aa31_e548_d335_6519_e78e8cca28b1">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080345Member"
      id="t_1520_b072def8_6c1d_eb54_3358_08179520070d">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080345Member"
      id="t_1521_107295f6_e00c_4cd8_a235_aa60a5f2ff88">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000085095Member"
      id="t_586_dbe128af_0a8f_f3f5_4f3d_39782fff8df1"> iSHARES&#xae; iBONDS&#xae; DEC 2030 TERM MUNI BOND ETF  Ticker: IBMSStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000085095Member"
      id="t_576_e4b2f2bf_f232_4048_9c4f_8c86f102ebe8">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000085095Member"
      id="t_577_3e314c3a_d9a7_40a6_bcda_35bb739db18c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2030 Term Muni Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of investment-grade&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; U.S. municipal bonds expected to mature or be redeemed before December 2, 2030.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000085095Member"
      id="t_578_43bfdec1_5d93_4c1a_a097_3a3f5ea5966a">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000085095Member"
      id="t_579_6d25383d_3cc5_4e33_b4e9_d9855eaa6dd6"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000085095Member"
      id="t_587_7d9322e6_8fa7_00c6_9bc2_74da0bb45fca">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000085095Member_C000249960Member"
      decimals="4"
      id="h_1512_46ea96c1_97e8_483a_8e2a_63751b20b765"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000085095Member_C000249960Member"
      decimals="4"
      id="h_1513_a7328317_07f8_475d_adcd_b09e14d84a29"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000085095Member_C000249960Member"
      decimals="4"
      id="h_1514_2bf5bcb1_f639_4d91_96a8_c17808eb4a1e"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000085095Member_C000249960Member"
      decimals="4"
      id="h_1515_a1505388_b319_4d0e_ab84_da7dc9da5383"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000085095Member"
      id="t_622_d48ed61c_e90f_5a64_9bb1_207fdee16bf3">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000085095Member"
      id="t_588_b691797e_ee71_3222_383d_c210da733886">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000085095Member"
      id="t_590_6519a28d_ea24_cee0_d939_e248a0407145">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2030 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000085095Member_C000249960Member"
      decimals="INF"
      id="h_1516_baf09912_b61f_4364_98ea_50dddadabce8"
      unitRef="USD">18</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000085095Member_C000249960Member"
      decimals="INF"
      id="h_1517_56a36d29_6a65_436c_9f27_48b0c85d3eb8"
      unitRef="USD">58</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000085095Member"
      id="t_591_7a0f9ab0_da6e_7538_fcbf_a12b7ddda84b">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000085095Member"
      id="t_592_9b1e0fad_7a9b_5266_16c9_c41c31d05813">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. From inception (May 22, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000085095Member"
      decimals="4"
      id="h_1518_84d72004_4605_43dc_a636_aba27a090baa"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000085095Member"
      id="t_581_bb276684_84d6_4238_b7ea_b90bf5ce20b0"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000085095Member"
      id="t_582_97f10a2c_4da9_4fc2_8a2f_ea357c52e61a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the S&amp;amp;P AMT-Free&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal Series Callable-Adjusted Dec 2030 Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5.5pt; position: relative; top: -3.75pt;"&gt;TM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;(the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which is a market-value-weighted index that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seeks to measure the performance of investment-grade (as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determined by S&amp;amp;P Dow Jones Indices LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SPDJI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)), tax-exempt, U.S. municipal bonds, reducing callable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds before 2030, and only including non-callable bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturing in 2030. As of October 31, 2024 there were &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;8,559&#160;issues in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index includes municipal bonds from issuers that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are U.S. state, federal district (the District of Columbia), or local &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;government or agency such that the interest on the bonds is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes and the federal alternative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;minimum tax (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;AMT&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Bonds issued by U.S. territories and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Commonwealth of Puerto Rico are excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index. Each bond must have a rating of at least BBB- by S&amp;amp;P &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Global Ratings, Baa3 by Moody&#x2019;s Investors Service, Inc., or BBB- &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by Fitch Ratings, Inc. (except in the case of a pre-refunded/escrowed&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; to maturity bond). Each bond must be rated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by at least one of the rating agencies. The Index Provider will use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the lowest rating in determining if a bond is investment grade. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, each bond must have a minimum maturity par amount of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;$2 million to be eligible for inclusion in the Underlying Index. To &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remain in the Underlying Index, bonds must maintain a minimum &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;par amount greater than or equal to $2 million as of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing reference date. All non-callable bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index will mature or be redeemed after December 31, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2029 and before December 2, 2030. Callable bonds are eligible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subject to the following: (i) a final maturity date after December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;31, 2029 and before December 2, 2030, and a next call date no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sooner than two years prior to final maturity; or (ii) a final maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;up to four years after the index maturity year, if the next call date &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is within the index maturity range. Prior to the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year of maturity, redeemed bonds are represented as cash until &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the subsequent monthly rebalancing date during which eligible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds are added to the Underlying Index. In the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;year of maturity, bonds that mature or are pre-refunded in their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;respective year of maturity do not accrue interest past the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or pre-refund date. A bond is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; when the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bond has been refunded to a call date prior to maturity. In other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;words, a holder of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunded&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bond receives all payments of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest and principal back on an earlier date then the stated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity date of the bond. All payments related to the maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;pre-refunding of a bond are reinvested in tax-exempt cash or cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalents for the duration of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Outside of five years prior to the term of the Fund, the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index will be market value weighted. Five years prior to the term &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund, monthly rebalances occurring in rolling two year &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods will remove bonds with a maturity year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund from the Underlying Index. Such rebalancing will begin &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with those bonds whose effective maturity date is furthest from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that of the Underlying Index. Each two year period will remove &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds scheduled to mature in a specific year outside the term of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. For example, bonds scheduled to mature in 2033 will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;removed from the Underlying Index over the course of a two year &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;period beginning in January 2024. As a result, as of January 1, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2030, the Underlying Index will not contain bonds with an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effective maturity date later than December 2, 2030. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a series of the iShares iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of bond exchange-traded funds (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ETFs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) sponsored by BlackRock, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Inc. (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The iBonds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7pt; position: relative; top: -2pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; fixed maturity series do not invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in U.S. savings bonds or other U.S. government bonds (except to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the extent the funds hold cash equivalent instruments consistent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with their investment objectives) and are not designed to provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;protection against inflation. The Fund does not invest in U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal government agency bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in fixed income securities of the types included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index that BFA believes will help the Fund track &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, in each case except during the last months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund's operations, as described below. The Fund will invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;no more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index as well as in fixed income securities other than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the types included in the Underlying Index, but which BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will generally hold municipal bond securities issued by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;state and local municipalities whose interest payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income tax, the federal AMT and the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; including dividends, interest and capital gains.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In the last months of operation, as the bonds held by the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;mature, the proceeds will not be reinvested in bonds but instead &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will be held in cash and cash equivalents, including, without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitation, shares of money market funds advised by BFA or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliates, AMT-free tax-exempt municipal notes, variable rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;demand notes and obligations, tender option bonds and municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commercial paper. These cash equivalents may not be included in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. By December 2, 2030, the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is expected to consist entirely of cash earned in this manner. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Around the same time, the Fund will wind up and terminate. After &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;appropriate provision is made for any Fund liabilities, its net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets will be distributed to then-current shareholders pursuant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to a plan of liquidation. The Fund's termination was approved by a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;majority of the Trust's Board of Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not require additional approval by Fund shareholders. The Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may extend the termination date if a majority of the Board &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the extension to be in the best interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund should not be confused with a target date fund, which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;has assets that are managed according to a particular investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;strategy that converts fund assets to conservative investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over time.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by SPDJI, which is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund and BFA. The Index Provider determines the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;composition and relative weightings of the securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and publishes information regarding the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Underlying Index.&lt;/span&gt;&lt;/div&gt;   &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;Industry Concentration Policy.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160;The Fund will concentrate its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, hold 25% or more of its total assets) in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular industry or group of industries to approximately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;same extent that the Underlying Index is concentrated. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purposes of this limitation, securities of the U.S. government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(including its agencies and instrumentalities), repurchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;agreements collateralized by U.S. government securities, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of state or municipal governments and their political &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subdivisions are not considered to be issued by members of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;industry.&lt;/span&gt;&lt;/div&gt;  </rr:StrategyNarrativeTextBlock>
    <rr:StrategyPortfolioConcentration
      contextRef="S000085095Member"
      id="t_593_3317e6d0_7399_176a_cf85_f708fa36969c"> Industry Concentration Policy.&#160;The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry. </rr:StrategyPortfolioConcentration>
    <rr:RiskHeading
      contextRef="S000085095Member"
      id="t_583_961f7824_0880_4af1_84aa_2f43d3b6277a"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000085095Member_RiskLoseMoneyMember"
      id="t_594_20a59b98_dac1_4f86_19d9_ab38364a318d">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_MunicipalSecuritiesRiskMember"
      id="t_596_7eed964e_7984_4505_6329_1846c522dd81"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Municipal Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Municipal securities can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significantly affected by political or economic changes, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes made in the law after issuance of the securities, as well &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as uncertainties in the municipal market related to taxation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;legislative changes or the rights of municipal security holders, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including in connection with an issuer insolvency. Municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities backed by current or anticipated revenues from a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;specific project or specific assets can be negatively affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the inability to collect revenues from such projects or assets. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Certain municipal securities are issued by entities with limited &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxing authority such as school districts, or are dependent on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;revenue from a particular sector or industry, such as the utilities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sector, infrastructure sector, or transportation industry. In the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;event of a default or insolvency, certain issuers of municipal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds may be subject to proceedings other than those specified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by U.S. bankruptcy laws, which may impact the Fund&#x2019;s ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ultimately recover assets.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_RiskOfInvestingInTheUSMember"
      id="t_597_b851532b_67f2_ac6f_a8d3_2d81820a755c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_InterestRateRisksMember"
      id="t_598_88c9edea_d7b3_3334_8901_3c24f2756b76"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_MarketRiskMember"
      id="t_599_45998267_f82f_e678_17b3_3b5d268fd67b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_IndexRelatedRiskMember"
      id="t_600_ac6e8b9b_a33e_0514_e393_31581a279c20"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_AssetClassRiskMember"
      id="t_601_fa8e0fbb_4a7c_01e8_c09e_fc6ee1f6a4a8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_AssetsUnderManagementAUMRiskMember"
      id="t_602_fe38fa21_f2d2_d988_e740_80296bedf0a2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085095Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_603_2b1387a6_ec8e_8035_d9f1_95d6076514c2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085095Member_CallRiskMember"
      id="t_604_4fd0fedc_1941_2a37_318c_e7864f999739"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Call Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;During periods of falling interest rates, an issuer of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;callable bond held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;call&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or repay the security &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before its stated maturity, and the Fund may have to reinvest the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;proceeds in securities with lower yields, which would result in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline in the Fund's income, or in securities with greater risks or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with other less favorable features. Issuers of longer maturity &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities may be more likely to call such securities as interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates fall. As a result, the Fund's investment in certain callable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities maturing outside the term of the Fund may increase the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;likelihood that securities held by the Fund are called prior to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 2, 2030.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085095Member_ConcentrationRiskMember"
      id="t_605_f42a46da_09ee_bde9_79df_7192c890b7eb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_CreditRisksMember"
      id="t_606_3c17fd47_f9c9_40f5_1b3c_0dcee0d568ab"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Debt issuers and other counterparties may be unable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or unwilling to make timely interest and/or principal payments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;when due or otherwise honor their obligations. Changes in an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer&#x2019;s credit rating or the market&#x2019;s perception of an issuer&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creditworthiness may also adversely affect the value of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in that issuer. The degree of credit risk depends on an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuer's or counterparty's financial condition and on the terms of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;an obligation.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_CybersecurityRiskMember"
      id="t_607_f96da256_e0db_bc54_74e1_4125281b51db"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_DecliningYieldRiskMember"
      id="t_608_bfb8d57b_7b29_1436_8b4a_b3c00edf54c8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the final eleven months prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund's planned termination date, its yield will generally tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;move toward prevailing money market rates and may be lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the yields of the bonds previously held by the Fund and lower &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than prevailing yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_FluctuationOfYieldAndLiquidationAmountRiskMember"
      id="t_609_3f08463e_a10d_291c_ecd0_8751d4231b31"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Fluctuation of Yield and Liquidation Amount Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unlike a direct investment in a municipal bond that has a level &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon payment and a fixed payment at maturity, will make &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;distributions of income that vary over time. It is expected that an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund, if held through maturity, will produce &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;aggregate returns comparable to a direct investment in a group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds of similar credit quality and maturity. Unlike a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;direct investment in municipal bonds, the breakdown of returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;between Fund distributions and liquidation proceeds are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predictable at the time of your investment. For example, at times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;during the Fund's existence it may make distributions at a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(or lesser) rate than the coupon payments received on the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio, which would result in the Fund returning a lesser (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;greater) amount on liquidation than would otherwise be the case. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The rate of Fund distribution payments may adversely affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tax characterization of your returns from an investment in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund relative to a direct investment in municipal bonds. If the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount you receive as liquidation proceeds upon the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination is higher or lower than your cost basis, you may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience a gain or loss for tax purposes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_IlliquidInvestmentsRiskMember"
      id="t_610_40a101f0_dc39_c4ef_9a6f_feda715befbd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment that the Fund reasonably expects cannot be sold or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disposed of in current market conditions in seven calendar days &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or less without significantly changing the market value of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. To the extent the Fund holds illiquid investments, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid investments may reduce its returns because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be unable to transact at advantageous times or prices. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;if the Fund is limited in its ability to sell illiquid investments during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periods when shareholders are redeeming their shares, it will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;need to sell liquid securities to meet redemption requests and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;illiquid securities will become a larger portion of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;holdings. During periods of market volatility, liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for Fund shares may be impacted by the liquidity in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market for the underlying securities or other assets held by the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund, which could lead to Fund shares trading at a premium or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;discount to the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_IncomeRiskMember"
      id="t_611_0b9abf55_1cf0_fe34_8c36_003318c0c288"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_IssuerRiskMember"
      id="t_612_3eaaef20_4ece_03b6_57c7_0c92ab8154bd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_LargeShareholderAndLargeScaleRedemptionRiskMember"
      id="t_613_47a30e5b_13b6_7b7e_5230_30424bcc7383"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Large Shareholder and Large-Scale Redemption Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders of the Fund, including an Authorized Participant, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third-party investor, the Fund&#x2019;s adviser, an affiliate of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adviser, a market maker, or another entity, may from time to time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;own or manage a substantial amount of Fund shares, or may hold &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their investment in the Fund for a limited period of time. There can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be no assurance that any large shareholder or large group of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders would not redeem their investment. Redemptions of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a large number of Fund shares could require the Fund to dispose &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of assets to meet the redemption requests, which can accelerate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the realization of taxable income and/or capital gains and cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to make taxable distributions to its shareholders earlier &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;than the Fund otherwise would have. In addition, under certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;circumstances, non-redeeming shareholders may be treated as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;receiving a disproportionately large taxable distribution during or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with respect to such year. In some circumstances, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hold a relatively large proportion of its assets in cash in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;anticipation of large redemptions, diluting its investment returns. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;These large redemptions may also force the Fund to sell portfolio &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets when it might not otherwise do so, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which may negatively impact the Fund&#x2019;s NAV, increase the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;brokerage costs and/or have a material effect on the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;price of Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_ManagementRiskMember"
      id="t_614_254ff3cd_b9c9_5828_d5fc_8b3d8e814463"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_MarketTradingRiskMember"
      id="t_615_494a1be1_c380_5348_868b_0e89da2ec67f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_RiskNondiversifiedStatusMember"
      id="t_616_7ebda17e_7dfc_de89_ca76_c360a31f18f0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Non-Diversification Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;non-diversified.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; This means that, compared with funds that are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;classified as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;diversified,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the Fund may invest a greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;percentage of its assets in securities or other instruments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;representing a small number of issuers or counterparties and thus &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may be more susceptible to the risks associated with these &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particular issuers or counterparties. As a result, the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance may depend to a greater extent on the performance &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of a small number of issuers or counterparties, which may lead to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more volatility in the Fund&#x2019;s NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_OperationalRiskMember"
      id="t_617_6ff9b7a3_36d9_8cb1_c4bd_640286c56da2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_SmallFundRiskMember"
      id="t_618_fab2ba9d_1120_a93c_7109_c43fe2f6db2c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_TaxRiskMember"
      id="t_619_04be15c0_435d_551f_7321_5018cbe54949"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; There is no guarantee that the Fund's income will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;exempt from U.S. federal income taxes, the federal AMT or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;federal Medicare contribution tax of 3.8% on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;net investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_TrackingErrorRiskMember"
      id="t_620_7c108302_27ad_a022_283b_d5efc04dca15"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. A Fund that tracks an index where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;municipal bonds are an investment focus may experience higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error than ETFs that do not track such indexes.&#160;Until the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund reaches greater scale, it may experience higher tracking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error than is typical for similar index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085095Member_ValuationRiskMember"
      id="t_621_9854c71a_cfc5_55f5_dae8_5ed42f0f11ae"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The price that the Fund could receive upon the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale (or other disposition) of a security or other asset may differ &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the Fund&#x2019;s valuation of the security or other asset, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;particularly for securities or other assets that trade in low volume &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or volatile markets or that are valued using a fair value &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology. The price received by the Fund also may differ from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the value used by the Underlying Index. In addition, the value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the securities or other assets in the Fund&#x2019;s portfolio may change &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;on days or during time periods when investors are not able to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase or sell Fund shares. Authorized Participants that create &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or redeem Fund shares on days when the Fund is holding fair-valued&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; securities or other assets may receive fewer or more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares, or lower or higher redemption proceeds, than they would &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have received had the securities or other assets not been fair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;valued or been valued using a different methodology. The ability to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value investments may be impacted by technological issues or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;errors by pricing services or other third-party service providers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000085095Member"
      id="t_584_6048032e_a367_4d63_9832_d4cd20850fbe"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000085095Member"
      id="t_585_ff3df58f_a6f9_40f8_bb68_62b8f3969455">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000085095Member"
      id="t_595_f31fc115_1180_05ea_1d14_9729a2b0e469"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000080885Member"
      id="t_1537_53c4ec1e_4840_b1be_d688_abc8fb92d572"> iSHARES&#xae; iBONDS&#xae; OCT 2025 TERM TIPS ETF  Ticker: IBIBStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080885Member"
      id="t_586_1ba2ee04_68b4_4eca_b3df_c900a1af7f14">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080885Member"
      id="t_587_3711c997_0400_4f6f_99e8_119f34993f5e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2025 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2025.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080885Member"
      id="t_588_8f3a6ef6_b74c_415b_a437_a6bffb31b9ed">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080885Member"
      id="t_589_f3c76f14_ef25_41c1_8ffc_b56c768effd2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2025. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080885Member"
      id="t_1538_2d43ef72_c0c5_5089_7a4e_384b3de878b2">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080885Member"
      id="t_1539_89910e19_7818_f39b_a721_03ed664e99ce">October 15, 2025</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080885Member"
      id="t_1540_8cbe0b94_47b4_c278_48a7_2cad2856141e">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1519_35158700_ce69_4d47_9d89_9e98b813d031"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1520_d8c58151_9fc0_44ce_b6d2_45d5b30c739a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1521_0067269c_fa0f_4cf2_a8ec_b818cf009d18"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1522_3d20f4b1_a116_4f84_8883_d3074b90e20e"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1523_1e741936_8460_44ba_ade8_3221931d27c8"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1524_2e29edec_9e28_4fd6_9a8f_d2db4f7f6432"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1525_16c79018_5fbf_4c23_9e77_555d0ac45759"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080885Member"
      id="t_1541_972ee28a_4342_9404_9a0f_42f004acfa43">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080885Member"
      id="t_1542_af781bac_98fa_95d4_af74_307b8edd70d4">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2025 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <ist:ExpenseExampleMaturity
      contextRef="S000080885Member_C000243457Member"
      decimals="INF"
      id="h_1526_dca83753_378b_4c60_a853_37a26bbc6323"
      unitRef="USD">6</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080885Member"
      id="t_1543_e2023b83_8c5e_fc0c_ce7c_6eda356d1a8a">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080885Member"
      id="t_1544_b94d3220_ffa8_a091_9b22_825b21baaf1b">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080885Member"
      decimals="4"
      id="h_1527_c321d3f9_a46b_403c_84df_175fe2060c16"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080885Member"
      id="t_591_6a09011f_cd35_4d78_9227_98a78619daeb"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080885Member"
      id="t_592_c0ccb89f_578d_4518_a7d3_070b22c22feb"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2025 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2025 and October 15, 2025, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2025, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 5 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2025, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080885Member"
      id="t_593_2e452c34_2510_4ae4_8870_fb4f52e81dd4"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080885Member_RiskLoseMoneyMember"
      id="t_1545_e0233634_8ae0_8655_bb3f_54c69169cc79">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_USTreasuryObligationsRiskMember"
      id="t_1558_33fbc221_1c02_b4b0_8171_3c1df202a5e0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_InflationIndexedBondsRiskMember"
      id="t_1559_7ffe5b74_ea9e_238e_4e17_24b0525362c1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_InterestRateRisksMember"
      id="t_1560_159c5944_2594_18fd_b005_e80753483a5e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_MarketRiskMember"
      id="t_1561_3f75d567_b4ea_47ee_a7be_4a84f7d4feed">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_IndexRelatedRiskMember"
      id="t_1562_288f7b90_4411_9f02_d446_17680c5b77c8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_AssetClassRiskMember"
      id="t_1563_feb359c2_7763_430d_48de_4344f586971e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_AssetsUnderManagementAUMRiskMember"
      id="t_1564_dc6f0e43_e982_a52c_f877_a92d506e1ee1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1565_8f458526_66df_71a8_a246_5b71834280f3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_CashManagementRiskMember"
      id="t_1566_50a04c93_f6b2_eac9_ca41_0449502e1946">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cash Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;If a significant amount of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets is invested in cash and cash equivalents, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform other funds that do not similarly invest in cash and &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents for investment purposes and/or to collateralize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative instruments.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_ConcentrationRiskMember"
      id="t_1567_970cd71c_33f2_b23e_fce7_98b41e06184f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_CybersecurityRiskMember"
      id="t_1568_53113fb6_574b_c312_d5fa_34bd401aef17">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_DecliningYieldRiskMember"
      id="t_1569_eec6fdb1_19d1_016a_d7c2_137fe2799250">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_IncomeRiskMember"
      id="t_1570_cc98298f_0cbf_7de4_ed22_36283d7e95ab">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_IssuerRiskMember"
      id="t_1571_1279085e_39d2_aae8_dd3c_929e78a781de">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_ManagementRiskMember"
      id="t_1572_2f9f585d_46d7_a0fb_4e05_507eb783a615">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_MarketTradingRiskMember"
      id="t_1573_62ff68ff_58c2_17df_15b1_fc92ba5f3325">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_OperationalRiskMember"
      id="t_1574_29ca753c_2cfb_21dc_ac3a_aa1c6f135789">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080885Member_RiskOfInvestingInTheUSMember"
      id="t_1575_39e3e3ae_fdb9_59b8_a179_1943b5e4f0a5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_SecuritiesLendingRiskMember"
      id="t_1576_6adf3e57_12d0_e22b_bd90_9335edfcec96">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_SmallFundRiskMember"
      id="t_1577_06a99b8c_0913_ee1e_230f_eac96095d938">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080885Member_TrackingErrorRiskMember"
      id="t_1578_e936329b_56c0_c410_761d_10faf484e19a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080885Member"
      id="t_594_4a7a585c_518d_4721_9bb3_1b6a4a146770"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080885Member"
      id="t_1546_fb2db73d_3481_f9e4_c3dd_6da5d910a002">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080885Member"
      id="t_1547_3a49c5e3_0370_ba36_173c_38e16f4b8ef6">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080885Member"
      id="t_1548_ef75ccb1_8b39_2327_cf34_a263455c51ec">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080885Member"
      id="t_1549_e3723f7c_9cd6_4a4f_dff1_6dd46d6d6678">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080885Member"
      id="t_1550_01453c3f_dcb5_7135_69dc_7be60add2bef">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080885Member"
      id="t_1551_47216fe5_d6dc_456b_b9ee_f3e8669d8d9f">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080885Member"
      id="t_1552_1909d996_ef21_9b29_d77a_1ec7c0e2b0bc">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 21.83pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 21.83pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;1.43%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 21.83pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 21.83pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;1.30%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080885Member_C000243457Member"
      id="h_1531_ba685649_2170_49ab_949e_55c992c5d6f6">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1532_8b9e789e_4b90_41dc_b017_469a3dfed396"
      unitRef="pure">0.0143</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080885Member_C000243457Member"
      id="h_1533_1337b195_397d_40c2_b8ce_eff22c0cfe98">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080885Member_C000243457Member"
      id="h_1534_4962e4a2_e5f2_4c66_87e5_fee320eae084">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1535_301b2cf2_1e76_4f1d_aa52_ba408c9da56d"
      unitRef="pure">0.0130</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080885Member_C000243457Member"
      id="h_1536_9071bfd8_2b8e_46f5_977e_fca6b4790be3">2024-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080885Member"
      id="t_596_e6afb593_b9e6_40c4_85a8_f78d5d82a9e9">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080885Member_C000243457Member"
      id="t_1553_9a7bc472_8a1d_6ba5_7533_5e2d6c3b8b1b">2023-09-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1537_08bda5a2_fd9e_4ff7_87d3_44e1ed2f00f5"
      unitRef="pure">0.0564</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080885Member_C000243457Member"
      decimals="4"
      id="h_1538_a1cb7139_374f_4f3f_bca1_5158ebf75411"
      unitRef="pure">0.0562</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080885Member_C000243457Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1539_45137ca5_4e85_49e7_bae0_2098e27fd2b6"
      unitRef="pure">0.0352</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080885Member_C000243457Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1540_24e39377_287a_4687_8278_4e51afe8f799"
      unitRef="pure">0.0365</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080885Member_C000243457Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1541_a4ae4eff_7afb_4ef6_9e9c_33d2ac3a4ff4"
      unitRef="pure">0.0331</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080885Member_C000243457Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1542_6d86ca53_a207_43a9_84cf_2ce82edb0990"
      unitRef="pure">0.0345</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080885Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1543_4812759f_c00f_4277_a386_d89da4bfd78b"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080885Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1544_0e959c8c_501b_4253_ad48_bd5a7ee98ede"
      unitRef="pure">0.0475</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080885Member_ICE2025MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1545_9541c345_9e4b_47d6_8858_4c7e9b3064d1"
      unitRef="pure">0.0575</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080885Member_ICE2025MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1546_b5e9aa3e_f896_408d_8411_36ad3d2f4cc8"
      unitRef="pure">0.0572</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080885Member"
      id="t_1554_5ce15a3e_9091_04ee_5c0a_884c8ea79479">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080885Member"
      id="t_1555_01ced722_213f_2254_dbd7_ae09a1ad22e7">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080885Member"
      id="t_1556_0341d197_3c8d_2ee0_c84a_7bd3697d495f">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080885Member"
      id="t_1557_b8b1ab88_5d8c_4c39_9272_ba626b3f0c37">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080886Member"
      id="t_1566_63e1517c_110b_25f1_2ce4_dc14aa3a1136"> iSHARES&#xae; iBONDS&#xae; OCT 2026 TERM TIPS ETF  Ticker: IBICStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080886Member"
      id="t_597_e724e061_85f7_47ce_b817_d413c32862ad">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080886Member"
      id="t_598_cc6f364d_0f49_4f5c_b6ee_2c10d89b7fcd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2026 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2026.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080886Member"
      id="t_599_d3a2f81d_afd5_43b4_a7d4_6efa674703f6">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080886Member"
      id="t_600_29019333_6bff_4c64_bcca_0e95eb148ccf"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2026. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080886Member"
      id="t_1567_f13bd9d1_035a_3766_0562_0ec7d5c8939b">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080886Member"
      id="t_1568_3f8122d7_5e84_748a_3396_a4ae0230d658">October 15, 2026</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080886Member"
      id="t_1569_10043c56_b51c_8ab8_583f_8f137e04c3de">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1547_fa14f8f9_d471_4bed_8457_9c2fa9e0d425"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1548_02001013_227f_4b03_8bca_fad9ffd9a702"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1549_f22ed5a9_cbfd_458f_af41_e5d1b9aa6f2b"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1550_23e83634_a4bb_46c6_8f3c_cc8b52db25df"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1551_cec736ed_bb55_4d3d_be23_dc9c7017941d"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1552_cfac3cea_7143_4cc3_93e6_f19cd6a2ca73"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1553_d5204747_6399_48f4_8e12_92fde8998ea6"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080886Member"
      id="t_1570_3bdfc331_57bc_0e61_6d94_98d9d05496fa">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080886Member"
      id="t_1571_e87ef5b4_abd9_4db6_5c3e_2587aa75743e">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2026 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080886Member_C000243458Member"
      decimals="INF"
      id="h_1554_a30cd1eb_dc64_4f9f_acd2_2f64477d4969"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000080886Member_C000243458Member"
      decimals="INF"
      id="h_1555_d039e08a_fd55_4800_963f_861d12c58c1e"
      unitRef="USD">17</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080886Member"
      id="t_1572_d9d16144_33aa_9a9b_297c_deb42da0f783">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080886Member"
      id="t_1573_62d3eb68_bacd_9091_88d6_e43e998cd8da">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080886Member"
      decimals="4"
      id="h_1556_8faaad45_1dc2_4fcb_9f90_00a8e740a9a8"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080886Member"
      id="t_602_3c3c0fcc_420a_4f9c_a3d5_29f8a3770128"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080886Member"
      id="t_603_14f8ddd4_77da_45ad_91b8_5b3dd1b6e892"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2026 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2026 and October 15, 2026, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2026, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 5 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2026, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080886Member"
      id="t_604_5fea4634_ccf8_4ac4_b41f_b3b06f57501c"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080886Member_RiskLoseMoneyMember"
      id="t_1574_8aff3470_0225_301e_9752_c2189d95c57e">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_USTreasuryObligationsRiskMember"
      id="t_1575_adfbfe86_f3fc_7a86_984e_9a01f08f22c8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_InflationIndexedBondsRiskMember"
      id="t_1576_3ac30755_05eb_842a_978f_c6c8d9cf7315"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_InterestRateRisksMember"
      id="t_1577_124bc493_f7d7_318e_a9ca_6ce088d21b47"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_MarketRiskMember"
      id="t_1578_b98b99b9_ab7e_66d4_bd8a_a52bbbd3c02d"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_IndexRelatedRiskMember"
      id="t_1579_f52aa15e_55f1_6d0c_76b3_e3c694e21fa2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_AssetClassRiskMember"
      id="t_1580_e09433b1_463e_82b4_629c_2fa043bc231f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_AssetsUnderManagementAUMRiskMember"
      id="t_1581_e08c98cb_ac59_4042_44bd_9adf610f2fc2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1582_9f1bd267_4fd2_3575_5960_d2045d507802"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_ConcentrationRiskMember"
      id="t_1586_2836c836_f86a_75ca_7366_34b8887ead7b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_CybersecurityRiskMember"
      id="t_1584_b28d406d_0001_a20e_06c9_e4688db6e143"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_DecliningYieldRiskMember"
      id="t_1585_293d5bf2_feaa_8deb_aafc_14ae2065b73e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_IncomeRiskMember"
      id="t_1587_30a0cfe7_7b75_e7e9_73ea_c3a807a781a7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_IssuerRiskMember"
      id="t_1588_6111a033_7754_d90a_e6c5_a68b6d8a050c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_ManagementRiskMember"
      id="t_1589_49690c11_7d12_a93e_4c96_c8928f448d47"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_MarketTradingRiskMember"
      id="t_1590_f3f4982c_bd20_3a47_1a82_6125465fe018"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080886Member_OperationalRiskMember"
      id="t_1591_d169d418_36cc_06e9_d729_c7f6aba2a3b3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_RiskOfInvestingInTheUSMember"
      id="t_1592_22a22c62_1780_d261_aff0_74814ab5d41f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_SecuritiesLendingRiskMember"
      id="t_1593_6eaf2953_c59c_b44f_9e12_69181ef8b800"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_SmallFundRiskMember"
      id="t_1594_79340fa5_0431_cd94_b3a7_13b77699f874"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080886Member_TrackingErrorRiskMember"
      id="t_1595_f1af9720_2f79_f700_d781_c71ab7d9176e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080886Member"
      id="t_605_4161ad87_5a14_4adf_8dc6_18f28f3f04ac"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080886Member"
      id="t_1596_ec7475c4_e10e_0db9_788e_7e29c80d869c">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080886Member"
      id="t_1597_f56257a5_a5ff_3981_3ab6_6d2f00bd4a7f">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080886Member"
      id="t_1598_70827596_4d0e_1924_9c8e_31bcc4d8c727">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080886Member"
      id="t_1599_be767ae0_c680_fc37_57ff_32db745e4f9a">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080886Member"
      id="t_1600_eac1c703_84e5_6751_be36_126483b080a3">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080886Member"
      id="t_1607_d94cdd9d_2bbd_9a00_e3ad_f8a32eacf3dc">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080886Member"
      id="t_1601_662e9142_e9df_d44e_b781_0c1e4fdf4154">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 22.66pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 22.66pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;2.20%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 22.66pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 22.66pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.5pt;"&gt;0.71%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080886Member_C000243458Member"
      id="h_1560_41c2bcc7_4886_4f93_b421_c43860599b65">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1561_e8580819_e4c4_40c5_958c_c5c1f1dbb52e"
      unitRef="pure">0.0220</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080886Member_C000243458Member"
      id="h_1562_191f87b7_31c8_4210_9d39_d5bcaf2e18a7">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080886Member_C000243458Member"
      id="h_1563_de740254_6786_4afc_8b8b_40f6785dacfb">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1564_6fecbe48_7e52_48fe_96ce_93fe9eafa310"
      unitRef="pure">0.0071</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080886Member_C000243458Member"
      id="h_1565_3b46f0b7_0d55_455b_baf6_3584f0b3c1d1">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080886Member"
      id="t_607_f9d2cd4f_1801_44c1_8fe4_947074789b78">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080886Member_C000243458Member"
      id="t_1606_afbaa0a5_6910_4591_b0d7_9417b99a723f">2023-09-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1566_6c370c61_679c_4f8d_9a5a_674084a794d5"
      unitRef="pure">0.0525</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080886Member_C000243458Member"
      decimals="4"
      id="h_1567_ec94013f_cad4_406d_a174_62776eb8f3c2"
      unitRef="pure">0.0567</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080886Member_C000243458Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1568_dc0733d3_3b97_4c3a_8d82_51d7e64c8825"
      unitRef="pure">0.0328</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080886Member_C000243458Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1569_a6e47172_9730_4e9d_9cdf_bec000bc1de2"
      unitRef="pure">0.0388</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080886Member_C000243458Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1570_eefd17f3_29d9_413d_a920_48f1ee916c69"
      unitRef="pure">0.0308</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080886Member_C000243458Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1571_0abccbd1_e346_4097_acf2_c0524161caf3"
      unitRef="pure">0.0356</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080886Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1572_daa68fd2_9d3c_40ab_a831_52bb44c9282a"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080886Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1573_5177d0c2_aaae_4226_9368_8312df5a76af"
      unitRef="pure">0.0475</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080886Member_ICE2026MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1574_2f01f1fc_055f_49dc_ad86_cdb111a2be2f"
      unitRef="pure">0.0535</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080886Member_ICE2026MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1575_04f47c84_4609_447c_9c4a_319676e8dac0"
      unitRef="pure">0.0578</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080886Member"
      id="t_1602_5072c596_4ef6_da30_82cd_deda31a5497f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080886Member"
      id="t_1603_73ad4671_fb18_9256_e815_a08631b9ba20">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080886Member"
      id="t_1604_dc696ab6_ab4a_209d_dd76_8cac13490d62">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080886Member"
      id="t_1605_de43aad2_c6e6_09b3_8d81_a97ccf91850d">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080887Member"
      id="t_1595_620b90f7_62d6_fdb4_645f_25dfa08158e1"> iSHARES&#xae; iBONDS&#xae; OCT 2027 TERM TIPS ETF  Ticker: IBIDStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080887Member"
      id="t_608_91838128_94ad_4543_83ce_e9033c88cf87">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080887Member"
      id="t_609_5810f19c_3df5_4973_a9aa_849113ec560a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2027 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2027.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080887Member"
      id="t_610_60400143_0625_43d2_ad96_1cc714d14885">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080887Member"
      id="t_611_a3d70298_91c4_4534_877a_7cf3f3229490"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2027. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080887Member"
      id="t_1617_521d0cba_9c4e_57b0_b75d_4383b6894d00">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080887Member"
      id="t_1613_c33deb15_d3ff_132e_6345_4f0e56c98748">October 15, 2027</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080887Member"
      id="t_1596_3d1a9cc5_8cfb_e9b8_dfb1_f8e77ecb64ad">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1576_00124e80_36f8_4896_9cfe_af55e74dc107"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1577_e79a9fe0_2626_4a99_b039_8a15b2e735f5"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1578_fcaef9d8_8b64_4a6e_8b23_d41df71049cb"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1579_44678bfa_ef4a_4812_87a9_1725d45f0ff8"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1580_c96971fb_6f08_42ed_9907_41402734eaf1"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1581_f837c9af_82cc_404c_bbd9_3fa671f02c66"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1582_33186edb_81e6_437c_aa8b_fbbd12f10a68"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080887Member"
      id="t_1597_9099dde5_0a21_a401_116b_2be4292a4e92">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080887Member"
      id="t_1598_24089c7d_9125_fbe0_6950_2c2ceb6f807f">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2027 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080887Member_C000243459Member"
      decimals="INF"
      id="h_1583_7528e9b8_5ed5_4662_b2c2_9e79888dfba8"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000080887Member_C000243459Member"
      decimals="INF"
      id="h_1584_8f92f05c_919a_49bd_a6d4_56cf8a44d5d1"
      unitRef="USD">28</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080887Member"
      id="t_1599_01c40fad_0134_3610_1f27_dca16aae1608">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080887Member"
      id="t_1600_ed621c6f_3b23_1c1a_bfcd_ee4bd91a9b2c">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080887Member"
      decimals="4"
      id="h_1585_f2e1d8be_b16d_4f26_9a84_e6c87bf489b6"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080887Member"
      id="t_613_d0a5567b_f6af_4b6a_abed_873ff7a893a1"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080887Member"
      id="t_614_4fed2ea4_6815_4109_adbc_212eda1980c7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2027 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2027 and October 15, 2027, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2027, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 5 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2027, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080887Member"
      id="t_615_88539aa5_c641_4087_b035_d79f408b024b"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080887Member_RiskLoseMoneyMember"
      id="t_1614_48f6e98b_0beb_0371_db48_cfd0b0e57706">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_USTreasuryObligationsRiskMember"
      id="t_1615_f55c1bc4_71d7_efca_df55_80b74e34f10d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_InflationIndexedBondsRiskMember"
      id="t_1616_dcdbb7e3_7379_6aa4_90b2_3a1116cfb092">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_InterestRateRisksMember"
      id="t_1618_3ef3557d_d6cb_6d6f_0f7d_d63218f74925">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_MarketRiskMember"
      id="t_1619_d112599b_e360_06c3_088b_13389f50b783">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_IndexRelatedRiskMember"
      id="t_1620_e597029f_3689_f2c6_f739_8f3940a21369">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_AssetClassRiskMember"
      id="t_1621_41a7c89f_b6cc_5b48_f40f_487e04d2ad7c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_AssetsUnderManagementAUMRiskMember"
      id="t_1622_19cbbd3a_bfcf_0699_d4b5_b576e2ca8973">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1623_556c2303_08f8_9201_e105_4fcd754554b9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_ConcentrationRiskMember"
      id="t_1624_07dfc250_ee34_59fc_697c_73ec99bbe34d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_CybersecurityRiskMember"
      id="t_1625_bfb91f15_cc25_5423_b7dc_1291af715412">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_DecliningYieldRiskMember"
      id="t_1626_f68691ee_66ed_d985_ff95_810241ff3338">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_IncomeRiskMember"
      id="t_1627_f3bfaaf0_5561_6fc4_4a2e_fd979899c431">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_IssuerRiskMember"
      id="t_1628_854c6acd_a1c4_4d6e_f93c_f671d8538d56">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_ManagementRiskMember"
      id="t_1629_fcf60e30_9849_1e99_741d_04c6d355b5a6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_MarketTradingRiskMember"
      id="t_1630_4b6a33e3_a7c5_e312_8fed_ef45e8508d22">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_OperationalRiskMember"
      id="t_1631_046c6350_e508_a12c_7709_e33978f27721">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_RiskOfInvestingInTheUSMember"
      id="t_1632_170db92c_827c_e0ab_98ed_a0e3a32848f8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_SecuritiesLendingRiskMember"
      id="t_1633_ebd6f105_1587_054d_937a_1fcafeb387bc">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080887Member_SmallFundRiskMember"
      id="t_1634_eaecf88c_a2a7_b839_d235_3d680740dfdf">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080887Member_TrackingErrorRiskMember"
      id="t_1635_dca6fc77_d3b7_2029_b8a0_fd896f9a9064">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080887Member"
      id="t_616_16c79950_e21a_4bca_9c64_a62852fa13e8"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080887Member"
      id="t_1601_cd56e5ed_ca7d_3978_aded_ad49b40ea2bc">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080887Member"
      id="t_1605_f54b4a3d_bc33_0079_a271_a96e048b0a50">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080887Member"
      id="t_1606_542ee134_7846_07c0_7ba0_eaef5b83eb3c">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080887Member"
      id="t_1604_9af04967_eda5_0c3a_c177_682177cafade">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080887Member"
      id="t_1603_8066edcc_9b48_9c46_f2f6_0e59fb15ac32">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080887Member"
      id="t_1602_85ecf74e_3c82_646d_822d_943ab2455781">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080887Member"
      id="t_1608_45232f7c_2190_31a5_b91a_c1e32e529d13">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.2pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.54pt;"&gt;2.82%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.2pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-0.14%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080887Member_C000243459Member"
      id="h_1589_66357bca_5aea_4abe_96f1_838a93b6f1dd">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1590_cae43791_bb37_44ca_9c99_d85e7e289a72"
      unitRef="pure">0.0282</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080887Member_C000243459Member"
      id="h_1591_3c588783_6df5_46f9_b275_3ea95b3a4868">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080887Member_C000243459Member"
      id="h_1592_7be38e7a_1a5d_4496_b2cb_c3789117ff6c">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1593_a4855585_2b27_40f2_a2c9_76fb361131c3"
      unitRef="pure">-0.0014</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080887Member_C000243459Member"
      id="h_1594_9896e46e_d0a7_4d49_8ce5_31f3d779b415">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080887Member"
      id="t_618_a2b52b93_92a9_4894_aa8c_298621134959">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080887Member_C000243459Member"
      id="t_1612_9b513cdc_4e9d_c5a5_294e_9a097a18a6b8">2023-09-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1595_0f5aefb0_cce0_4236_a519_f33cd3b8a36a"
      unitRef="pure">0.0466</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080887Member_C000243459Member"
      decimals="4"
      id="h_1596_dd75e269_158a_4762_a3ae_7f288b7c4272"
      unitRef="pure">0.0548</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080887Member_C000243459Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1597_3425b2ba_ee19_4cd0_97b8_1e270f2834d5"
      unitRef="pure">0.0287</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080887Member_C000243459Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1598_6d439da0_9a48_4e30_9b42_aa0274cd05ea"
      unitRef="pure">0.0382</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080887Member_C000243459Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1599_1e810499_1178_4ce1_985b_78e12fffb087"
      unitRef="pure">0.0274</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080887Member_C000243459Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1600_9d1d37a2_4265_4839_b6a3_70674f721535"
      unitRef="pure">0.0348</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080887Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1601_f7d7b166_46c5_4615_8d00_c36575bba1cc"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080887Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1602_6e9780c2_41ec_4105_b7d7_2ee09fcc8d00"
      unitRef="pure">0.0475</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080887Member_ICE2027MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1603_3e3b9e57_4d40_4f17_b66b_9a4dba7ed377"
      unitRef="pure">0.0476</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080887Member_ICE2027MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1604_51a9f738_519d_4083_944c_65522fdb72d2"
      unitRef="pure">0.0559</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080887Member"
      id="t_1607_bd1a17b9_7bca_00db_70b2_07e23294def9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080887Member"
      id="t_1609_9a82d534_71bd_e9f3_2a5c_b538b0ed07d2">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080887Member"
      id="t_1636_b4568f02_92c2_9621_c028_20117be37b9f">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080887Member"
      id="t_1611_1381e9d0_3962_1efa_8fe0_ad6d154a3ede">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080888Member"
      id="t_1625_ca06ed27_9979_70ba_9b48_61be3ee244dd"> iSHARES&#xae; iBONDS&#xae; OCT 2028 TERM TIPS ETF  Ticker: IBIEStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080888Member"
      id="t_619_43ee1ef0_1c46_4946_b701_1993f309ddfe">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080888Member"
      id="t_620_3dad5f4f_247c_4e8a_a0c1_c8d55f2c17d9"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2028 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2028.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080888Member"
      id="t_621_829a8874_fb31_4970_8a3e_2f373a509f0a">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080888Member"
      id="t_622_6d71e23a_441d_4f5b_b42c_91759af66b9e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2028. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080888Member"
      id="t_1626_334f2aca_527e_ea15_586b_633781e8ef5a">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080888Member"
      id="t_1666_1925899b_e5f5_200c_8228_14397d1acc25">October 15, 2028</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080888Member"
      id="t_1627_a8b2197b_1cd6_1b41_5ff4_f78f9595e089">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1605_e7578b25_9b7a_4367_8578_fe152131d1b4"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1606_0902a0f6_19bc_4413_bafc_c461cc871b98"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1607_746d78cf_d872_430c_983e_969536b8c498"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1608_91103187_1637_48fa_9028_f75fe264708a"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1609_3c4ae412_5ff8_4909_8402_0e8646c10841"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1610_25aaebee_2269_4ef3_9676_0bdf34f52fdb"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1611_5b9e7fe9_e6dd_4e02_a5f4_622651cbdbd0"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080888Member"
      id="t_1628_126675f4_8ffe_3f6a_bf82_afeb7ccb5172">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080888Member"
      id="t_1629_fbd9548a_34c8_56c8_34d7_5feb73504484">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2028 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080888Member_C000243460Member"
      decimals="INF"
      id="h_1612_0665945c_d08f_4cd2_a75b_911804ecee26"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080888Member_C000243460Member"
      decimals="INF"
      id="h_1613_439cc8b7_a50b_463f_8112_8fecc6e7ea73"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000080888Member_C000243460Member"
      decimals="INF"
      id="h_1614_ec7177e5_ccd7_4a42_add1_0f6491934742"
      unitRef="USD">40</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080888Member"
      id="t_1630_e9080c37_7f4b_ecb5_f354_c688dbbecf4d">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080888Member"
      id="t_1631_840bd91e_ae14_fbbb_85a9_aaa681e03814">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 10% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080888Member"
      decimals="4"
      id="h_1615_9f9bbe27_ee92_4343_a74c_664f8022beed"
      unitRef="pure">0.10</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080888Member"
      id="t_624_fcdadd90_bd33_4bfb_90ca_bcc769ff423c"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080888Member"
      id="t_625_f7f3f102_5ab7_4595_8f7e_c3d17ef21ede"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2028 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2028 and October 15, 2028, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2028, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 6 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2028, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080888Member"
      id="t_626_adf9ea3d_f21b_412a_9c2b_918037aaec71"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080888Member_RiskLoseMoneyMember"
      id="t_1642_e264bdfd_c346_82bf_6367_5d6b61d22b67">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_USTreasuryObligationsRiskMember"
      id="t_1643_5625a5d3_3614_cca5_3050_ca31f759e02a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_InflationIndexedBondsRiskMember"
      id="t_1644_c2ad96f5_8a4a_ac34_a2c9_5a11bcf09608">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_InterestRateRisksMember"
      id="t_1645_5cbdf39c_c218_5e84_e04e_85ac1fa7e699">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_MarketRiskMember"
      id="t_1646_e2d180c4_81b7_a700_bb9e_a4ed998abb18">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_IndexRelatedRiskMember"
      id="t_1647_60e52a92_0bd0_d397_5cad_c1abd0f5a3ba">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_AssetClassRiskMember"
      id="t_1648_0edf36ab_07a4_8389_cad5_28bd1d8295d3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_AssetsUnderManagementAUMRiskMember"
      id="t_1649_ab87a304_e905_bed2_aeb9_812b16ae227f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1650_05c547fd_5d53_a7fd_8603_da9b4a1f4466">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_ConcentrationRiskMember"
      id="t_1651_939f2bc4_a301_7ee9_e202_7eb7f591d4e5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_CybersecurityRiskMember"
      id="t_1652_e9bed5d2_7c1d_60b6_a4c8_c7033f27c9af">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_DecliningYieldRiskMember"
      id="t_1653_553397b7_89e2_9441_c652_ba93e743abd2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_IncomeRiskMember"
      id="t_1654_2c646000_f537_b4cc_9c7b_d2dccbcb28de">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_IssuerRiskMember"
      id="t_1655_bbfb6432_122b_35a1_1f3a_8769cb0f1001">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_ManagementRiskMember"
      id="t_1656_50d9cff0_ab37_c3e6_d93b_ed151b7f3d0f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_MarketTradingRiskMember"
      id="t_1657_1ff25e30_9468_fd2d_3c59_60b531450d95">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_OperationalRiskMember"
      id="t_1658_92e42645_7088_8c44_369f_2171176ba4e0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_RiskOfInvestingInTheUSMember"
      id="t_1659_305e6499_aa12_b2f7_71e8_0b41695283c4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080888Member_SecuritiesLendingRiskMember"
      id="t_1660_6229e388_fc03_130a_76a1_4b389dc929b1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_SmallFundRiskMember"
      id="t_1661_be8a7435_e137_3ec5_aee9_d16e4c961404">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080888Member_TrackingErrorRiskMember"
      id="t_1662_024ff267_2240_2551_acd4_36a708e44ee1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080888Member"
      id="t_627_6111cb20_ee09_4d7e_83a5_af8d1efd6d13"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080888Member"
      id="t_1632_2588de52_ad41_6b46_ea58_bbafa60ef604">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080888Member"
      id="t_1667_060f5b39_2748_069e_cb19_9e6803351e4e">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080888Member"
      id="t_1665_21fa427b_3a88_814a_f651_b184270afe6f">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080888Member"
      id="t_1633_ec67cab1_0648_17f9_e78c_5254312bc6f5">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080888Member"
      id="t_1634_dc812d46_3954_fbf4_66a0_6ab81ac49980">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080888Member"
      id="t_1635_380367c1_732a_74f3_89ee_86703820a149">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080888Member"
      id="t_1636_dd7ad93c_3cbe_6691_4a4b_2a64fd1f91ce">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.16pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.16pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.09pt;"&gt;3.31%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.16pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.16pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-1.04%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080888Member_C000243460Member"
      id="h_1619_6576a025_24cf_412c_80e0_db8b98c7b2eb">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1620_0981dfdc_2dcd_4e36_95ad_26fb91930e77"
      unitRef="pure">0.0331</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080888Member_C000243460Member"
      id="h_1621_413a9328_0389_4bee_8f4e_b1c760b06a55">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080888Member_C000243460Member"
      id="h_1622_9cce682c_7829_49d6_b59d_a1fd2780747e">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1623_1803865b_bf53_4bdd_8c7e_2649bd608471"
      unitRef="pure">-0.0104</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080888Member_C000243460Member"
      id="h_1624_54550d11_fab0_4061_b3d9_49b3763000ac">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080888Member"
      id="t_629_65084a27_bdda_43f3_905e_d34d32e4745c">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080888Member_C000243460Member"
      id="t_1637_98e230e5_f0ef_62f1_1afa_30c2dccffccc">2023-09-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1625_fa2e2b13_64f8_4a3b_accf_33cb3030ae32"
      unitRef="pure">0.0384</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080888Member_C000243460Member"
      decimals="4"
      id="h_1626_ee8cf2d2_5a14_4a6d_b9c2_eecfdea77962"
      unitRef="pure">0.0500</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080888Member_C000243460Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1627_cb20d893_3e02_4fb2_909a_e8b6b74c0157"
      unitRef="pure">0.0207</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080888Member_C000243460Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1628_e13c5727_ea4b_46e4_a6aa_019b40058c27"
      unitRef="pure">0.0338</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080888Member_C000243460Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1629_43215e37_c14b_4c32_83ea_263dbb00f4be"
      unitRef="pure">0.0226</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080888Member_C000243460Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1630_c754927e_1890_48c2_8fb8_c07ef6e131ec"
      unitRef="pure">0.0313</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080888Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1631_c577a6b5_44ca_4aba_92e9_cdad12aaabb5"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080888Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1632_4d0b4d35_8439_4f5f_8bfa_7e8407315169"
      unitRef="pure">0.0475</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080888Member_ICE2028MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1633_8ceb4190_d414_433b_bed9_9e582e83eb9a"
      unitRef="pure">0.0391</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080888Member_ICE2028MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1634_f986df0f_3c08_4150_a5eb_7407115ca25d"
      unitRef="pure">0.0507</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080888Member"
      id="t_1638_3c205acf_4cab_7fa3_8309_8db06c7581e0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080888Member"
      id="t_1639_e448e8e8_53f8_b1ad_ff62_58a3bb1ed43e">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080888Member"
      id="t_1640_3447c4cc_381e_ccf3_1456_92bfb8488280">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080888Member"
      id="t_1641_835407ce_9f6e_3c79_c1cb_d65aef19912d">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080889Member"
      id="t_1655_5137bc39_3658_577a_5a54_1f1dc7a432fb"> iSHARES&#xae; iBONDS&#xae; OCT 2029 TERM TIPS ETF  Ticker: IBIFStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080889Member"
      id="t_630_c4e41d14_e884_4089_a048_1db178592959">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080889Member"
      id="t_631_a684c93f_79a1_42f5_831b_2295479479dd"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2029 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2029.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080889Member"
      id="t_632_11973e66_15a9_43a1_bf94_b24f938fb750">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080889Member"
      id="t_633_1fe21dca_e863_472e_8fca_43916623ca9b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2029. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080889Member"
      id="t_1692_4113a3b9_5ae8_4445_097c_cae74381c33f">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080889Member"
      id="t_1695_18783d90_b189_08ef_b2ee_44c022f77406">October 15, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080889Member"
      id="t_1656_e7dddef1_a90e_ba88_9960_b3e393c8b8f7">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1635_9ca21838_15f0_41f0_a7c4_c221fec6aff5"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1636_f7190bdc_1f55_4f8a_8b69_91f591987688"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1637_6aa76f76_f8ae_4c94_acdd_5c3ba5db3881"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1638_fc2a189c_d8f3_4ba7_81b2_2060d95d87b6"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1639_930b44c0_e2a8_41d0_9476_dfa42afa8532"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1640_06b0a0e0_2a73_41d4_bf97_2739634f8908"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1641_22a84d53_8bb2_4de0_ac39_7d3dcbe7987f"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080889Member"
      id="t_1657_de1179f2_a0ea_dae6_73b0_54da804d11df">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080889Member"
      id="t_1658_e7992168_5c92_793f_f4c7_df5604c1dfbe">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2029 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080889Member_C000243461Member"
      decimals="INF"
      id="h_1642_5cf215cb_db70_47b1_86cc_f7273e53d2a3"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080889Member_C000243461Member"
      decimals="INF"
      id="h_1643_243c7a2b_e7b3_4a45_91e3_058ee054dd96"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000080889Member_C000243461Member"
      decimals="INF"
      id="h_1644_c8e8036e_6cfa_4d26_8f29_ffd5d8f8bfd1"
      unitRef="USD">52</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080889Member"
      id="t_1659_0234601f_9c53_7a63_e8c6_0754058e32ca">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080889Member"
      id="t_1660_ec0663f6_ee39_cedc_cfdd_68f52e49bd96">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 57% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080889Member"
      decimals="4"
      id="h_1645_a100ddec_c82d_42f0_9a22_31f122e89268"
      unitRef="pure">0.57</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080889Member"
      id="t_635_ac9eebbb_950a_4438_9836_04d6f45b30b4"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080889Member"
      id="t_636_d665ea62_c2ef_4730_beee_d65e5b9b5eed"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2029 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2029 and October 15, 2029, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2029, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 6 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2029, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080889Member"
      id="t_637_d8e57a9e_0ea7_4215_b7b7_ae1ebc99191c"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080889Member_RiskLoseMoneyMember"
      id="t_1671_81693c66_a495_9a29_b33e_9fc08d86a9cd">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_USTreasuryObligationsRiskMember"
      id="t_1672_4173bd7c_a394_4aae_c40c_198ecdf81af3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_InflationIndexedBondsRiskMember"
      id="t_1673_f7b9348b_7f50_6e1f_3e51_913421ea3be9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_InterestRateRisksMember"
      id="t_1674_caa2640e_ad16_05b7_eb24_4cfc2094c205">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_MarketRiskMember"
      id="t_1675_d108bd7c_ae0c_f6c3_6fff_e6b83fbc1df9">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_IndexRelatedRiskMember"
      id="t_1676_4d8578a9_5f5d_e3d8_f086_20514f9bc814">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_AssetClassRiskMember"
      id="t_1677_28a0c501_243a_1026_6688_690416f42b12">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_AssetsUnderManagementAUMRiskMember"
      id="t_1678_1259c582_6404_e32c_c6ac_9257dc36b6ec">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1679_a2bdc0a5_a103_b3f4_1170_6da7a2a255c7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_ConcentrationRiskMember"
      id="t_1680_303f1cb9_3b41_1836_dd52_a5323048ed99">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_CybersecurityRiskMember"
      id="t_1681_3237b13c_c99d_c1d9_a957_076a6a97bced">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_DecliningYieldRiskMember"
      id="t_1682_2b55c9fa_b946_510c_ab8c_22be20c52e22">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_IncomeRiskMember"
      id="t_1683_d246166f_8581_4988_8933_bf4de2f21e88">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_IssuerRiskMember"
      id="t_1684_329a8fd9_0bb3_08df_022c_13f63af6c64e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_ManagementRiskMember"
      id="t_1685_b444a241_9778_5970_0899_ca1d1de3c991">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_MarketTradingRiskMember"
      id="t_1686_9cc2dd23_5802_afa6_21f0_293ff042c9a7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_OperationalRiskMember"
      id="t_1687_4e5a52e4_2ee2_8ef2_8bd3_08d46a55bb8f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080889Member_RiskOfInvestingInTheUSMember"
      id="t_1688_793f629b_44b3_8b2c_a660_5ba1c857a421">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_SecuritiesLendingRiskMember"
      id="t_1689_abb6818f_88f6_4004_ab46_319144978872">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_SmallFundRiskMember"
      id="t_1690_5ad0e775_81b2_d306_8dc7_63abeb4b7298">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080889Member_TrackingErrorRiskMember"
      id="t_1691_32e5010c_d7fd_5d58_637e_29f484829bba">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080889Member"
      id="t_638_b6719120_f51c_4f82_a83d_cf9f7a0856ce"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080889Member"
      id="t_1661_94ad52eb_81ac_1d12_179b_24ffd87885e0">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080889Member"
      id="t_1664_61c4d8e0_1e1c_1964_df2c_0628b9b9b5fb">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080889Member"
      id="t_1693_09aaf96e_c212_c547_dd58_c2f441ed16fa">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080889Member"
      id="t_1663_8ed149b0_3551_0685_bdd6_0798f73d5a07">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080889Member"
      id="t_1662_426c5a2a_4edb_3d25_1145_543b3280574e">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080889Member"
      id="t_1694_28dd1b5c_0cef_2c11_faf3_c7a6b0b01571">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080889Member"
      id="t_1665_5f1c58b9_cbe7_7d44_a288_9b44119a7197">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.16pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.16pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.55pt;"&gt;3.56%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.16pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.16pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-1.73%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080889Member_C000243461Member"
      id="h_1649_82beb0ec_c86f_46c0_88c9_2fb7c1806de9">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1650_1eca6d02_1bd2_4774_af90_242437c1ce70"
      unitRef="pure">0.0356</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080889Member_C000243461Member"
      id="h_1651_50476854_8a62_421f_b194_e6a42cfa63b0">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080889Member_C000243461Member"
      id="h_1652_cf91681e_aa72_4dc0_bf2f_1cc8607e5cfc">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1653_577f294d_a8a2_4751_be4a_074dac0c422e"
      unitRef="pure">-0.0173</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080889Member_C000243461Member"
      id="h_1654_0a552239_c01e_4585_84a5_c15eae1506e2">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080889Member"
      id="t_640_4f62669e_bf32_429f_8638_30ff41cf3b35">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080889Member_C000243461Member"
      id="t_1666_79964a65_df51_b97e_9413_25074d96f511">2023-09-19</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1655_9452d5f6_9684_4efb_b4cd_5598964af60b"
      unitRef="pure">0.0317</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080889Member_C000243461Member"
      decimals="4"
      id="h_1656_e7d640c4_0a8d_416c_88f9_fbf718eaea57"
      unitRef="pure">0.0504</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080889Member_C000243461Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1657_3a6dd28f_13b6_445d_9e11_195ec31a94b3"
      unitRef="pure">0.0150</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080889Member_C000243461Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1658_2c2c1bb9_b590_41b6_937d_afa7921ffcc4"
      unitRef="pure">0.0340</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080889Member_C000243461Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1659_a95df9e8_4c08_4f78_be31_7ed92e3cc599"
      unitRef="pure">0.0187</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080889Member_C000243461Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1660_d949c595_c340_45f5_a893_83e737218a1e"
      unitRef="pure">0.0315</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080889Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1661_dc78271b_a77c_4778_af6d_b0435f49ec44"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080889Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1662_bfa275fa_3d25_4ec9_aec5_d9e61ac9469d"
      unitRef="pure">0.0525</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080889Member_ICE2029MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1663_7e2e1ffc_8609_413c_8784_816f31fa129a"
      unitRef="pure">0.0323</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080889Member_ICE2029MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1664_4585e83b_8a28_49c1_be65_a0995642dd15"
      unitRef="pure">0.0511</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080889Member"
      id="t_1667_b6b0281f_0ee7_88c6_6a52_c6b51edb8d23">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080889Member"
      id="t_1668_6b6d9984_dda8_ba17_3a88_2078a04c579e">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080889Member"
      id="t_1669_39e60557_e536_cfe8_c7e2_45e437ab1475">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080889Member"
      id="t_1670_f2c3cab1_2d9d_8fd6_6c8a_90346379c34a">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080890Member"
      id="t_1686_c01114fb_eb4d_3071_e53a_78fe169b2271"> iSHARES&#xae; iBONDS&#xae; OCT 2030 TERM TIPS ETF  Ticker: IBIGStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080890Member"
      id="t_641_d5a43ad1_fab3_4957_868f_686c185a31ad">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080890Member"
      id="t_642_ae2d8123_8094_4953_8aed_dedc0eabfc4a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2030 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2030.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080890Member"
      id="t_643_d0fcf604_f41b_4c7e_90e2_b79e75837d8f">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080890Member"
      id="t_644_fdd43eb7_a9f7_4c61_99fd_7d7e576c8cb0"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2030. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080890Member"
      id="t_1720_b844697e_a892_41a4_780c_1d55b4b50d5d">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080890Member"
      id="t_1726_4b62724d_bc97_6fea_b470_af057af2ed9a">October 15, 2030</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080890Member"
      id="t_1721_a0e10cca_83f1_5020_5eab_b69e4d3c57ef">Annual Fund Operating Expenses(ongoing expenses that you pay each year as apercentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1665_184a81e3_f854_4635_aab2_52bb145cac8e"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1666_a4543890_a527_4f00_9c69_6d1f81a99d36"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1667_c613439a_8471_4d0d_8fe0_c0ad8b64b07f"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1668_5858f374_fb92_485a_82ab_69ec21708dfd"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1669_d705b63d_0693_4dcd_a494_e870591437b0"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1670_82b1d74d_5b50_444e_866e_d5261a0ec9d6"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1671_e1c5c25d_7d5e_4150_b020_e8f0e69b7a8a"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080890Member"
      id="t_1687_5d907269_f08e_7d0b_f776_1edb7d392f6a">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080890Member"
      id="t_1688_e864f7b2_af1a_3890_76f4_3a9246bde54d">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2030 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080890Member_C000243462Member"
      decimals="INF"
      id="h_1672_aa661a8b_14e6_44ef_b8bd_95ee6ec3ac68"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080890Member_C000243462Member"
      decimals="INF"
      id="h_1673_58c6cb78_7ab2_45e9_bdc7_ef34fc0ea21d"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000080890Member_C000243462Member"
      decimals="INF"
      id="h_1674_5058f4d4_e5df_46dd_96b7_7269fe566896"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000080890Member_C000243462Member"
      decimals="INF"
      id="h_1675_af26e7eb_6496_4fab_8e94_1ebd9fa92bf3"
      unitRef="USD">65</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080890Member"
      id="t_1689_7e6e80aa_b083_576e_119a_edce4e058893">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080890Member"
      id="t_1690_e4ad0b0e_07f4_0d0b_4ddf_bdfdb6d0d15f">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080890Member"
      decimals="4"
      id="h_1676_91482d5c_f35b_4fc2_a309_862086059d16"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080890Member"
      id="t_646_1ac4a355_96d2_4698_b92c_7443e589eb65"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080890Member"
      id="t_647_9e781b88_ba40_4b8c_bef7_0c220fc4c54d"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2030 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2030 and October 15, 2030, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2030, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 2 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2030, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080890Member"
      id="t_648_6d6329e5_4479_47bd_98e9_be3ae82d770e"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080890Member_RiskLoseMoneyMember"
      id="t_1699_f032b0ab_ec4a_488f_659d_fceeca76ca19">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_USTreasuryObligationsRiskMember"
      id="t_1700_25d6f535_5e05_c561_f478_5363acd0aa34">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_InflationIndexedBondsRiskMember"
      id="t_1701_dcc3a638_8dc7_dd94_b571_cb0e5e23b150">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_InterestRateRisksMember"
      id="t_1702_c9a553c7_36dc_6463_d8a5_44c75ec62e5f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_MarketRiskMember"
      id="t_1703_30e6c683_dfa2_75b6_b250_41066a57a524">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080890Member_IndexRelatedRiskMember"
      id="t_1704_ac57cecb_21f5_6cc1_f986_6a84f8bfb1ae">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080890Member_AssetClassRiskMember"
      id="t_1705_cd9f713b_4a89_ed7a_2182_099abe54560e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080890Member_AssetsUnderManagementAUMRiskMember"
      id="t_1706_3abc776c_3c77_2ace_3f0e_c115fe704d82">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080890Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1707_9c5b91ae_e415_a3d9_2c98_a004c395d543">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_ConcentrationRiskMember"
      id="t_1708_67cd3963_0498_814d_0da2_19bce61ec35b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_CybersecurityRiskMember"
      id="t_1709_ad00649e_1fac_53df_4984_a6d1720aabb3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080890Member_DecliningYieldRiskMember"
      id="t_1710_1c472850_540e_a07e_2ee6_fd4357e57d0d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_IncomeRiskMember"
      id="t_1711_bfc79739_f0d2_93fc_6ead_4af16e2a2781">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_IssuerRiskMember"
      id="t_1712_2a228c14_278c_4782_fce2_c83dbedb75fd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080890Member_ManagementRiskMember"
      id="t_1713_685de24a_a1fb_c6b6_ee84_b5af9b23850c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_MarketTradingRiskMember"
      id="t_1714_fc219eaf_4d53_776f_ea05_aeeda972c23d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080890Member_OperationalRiskMember"
      id="t_1715_d3632568_ad66_5948_9f42_cd01db182a77">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_RiskOfInvestingInTheUSMember"
      id="t_1716_05fb6e48_e0d9_5e17_1d33_0f018fa0d44c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_SecuritiesLendingRiskMember"
      id="t_1717_b6f99bf8_435e_611b_dfee_81c0daf6f4d1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_SmallFundRiskMember"
      id="t_1718_9e9d2b84_86fa_3112_ed7f_560127d42173">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080890Member_TrackingErrorRiskMember"
      id="t_1719_f59ab88a_eaff_53c4_a41a_f14f7ce70369">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080890Member"
      id="t_649_230e5cf3_cb57_467f_bffe_80412dc0366c"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080890Member"
      id="t_1691_7f39f6a7_3828_5b25_1ae5_566152f3dbe0">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080890Member"
      id="t_1724_1d0c6728_c929_59f1_b41d_a3c229d50668">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080890Member"
      id="t_1725_c2e8ecda_7a1f_5bfb_7bf7_9b682b65c380">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080890Member"
      id="t_1723_a2a7c7f1_adcb_ce9e_8d77_070d66e583c7">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080890Member"
      id="t_1722_da98ec5f_648e_a1c1_16cb_91dcbc2bd524">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080890Member"
      id="t_1692_28df57ee_1e33_49d9_22cc_0324c1060fdb">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080890Member"
      id="t_1693_dfa939b4_61a9_10a8_0f03_c371cf04f8c1">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.33pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.33pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 3.37pt;"&gt;4.18%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.33pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.33pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-2.51%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080890Member_C000243462Member"
      id="h_1680_6931a561_7b59_442d_8fb6_a6cebcaf6f12">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1681_74ddf609_8b55_43e9_9763_a9b92df8bb14"
      unitRef="pure">0.0418</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080890Member_C000243462Member"
      id="h_1682_304ccfec_5016_4393_89c2_228601e30159">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080890Member_C000243462Member"
      id="h_1683_c3c52d60_0613_4871_b5eb_90cee0dc3838">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1684_faaf48ab_3fbc_44c5_a651_ac84d81b5adf"
      unitRef="pure">-0.0251</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080890Member_C000243462Member"
      id="h_1685_259c944f_296f_412b_badf_206928a16ed3">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080890Member"
      id="t_651_649dd528_1e2c_4692_8aed_460ebb11d368">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080890Member_C000243462Member"
      id="t_1698_55f1046a_f22c_e27f_8965_61068edc4c76">2023-09-19</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1686_03a8a05c_d4f7_42f9_8d0d_10798f64c2e1"
      unitRef="pure">0.0263</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080890Member_C000243462Member"
      decimals="4"
      id="h_1687_e837730a_716c_4646_b6db_f96d3d48d127"
      unitRef="pure">0.0470</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080890Member_C000243462Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1688_c83e2f6f_939f_4d15_b0a6_1e162a56827e"
      unitRef="pure">0.0093</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080890Member_C000243462Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1689_3990dca4_cbe4_49b2_a370_11511dfa8750"
      unitRef="pure">0.0309</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080890Member_C000243462Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1690_4f4d286a_882c_4ff4_916a_828f0f43385f"
      unitRef="pure">0.0155</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080890Member_C000243462Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1691_fc6c1396_179b_4c75_8b2b_8e5c4b89e8c9"
      unitRef="pure">0.0291</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080890Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1692_8bb1ae2e_01dc_4c13_b686_468e108b52aa"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080890Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1693_a14185e1_e88d_4d7b_adda_eafcd9837067"
      unitRef="pure">0.0525</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080890Member_ICE2030MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1694_e93fb371_0ecd_4435_ae37_f16908b4b21a"
      unitRef="pure">0.0272</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080890Member_ICE2030MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1695_3e881315_ac47_479d_9c04_5c9c4e2db323"
      unitRef="pure">0.0480</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080890Member"
      id="t_1694_85f06242_2414_9da4_12a3_2624b374581a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080890Member"
      id="t_1695_85c5fccd_3f56_bd52_909f_9e7f05b9f4ee">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080890Member"
      id="t_1696_f1f83b7f_127a_13ea_b5e3_7faf595cf465">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080890Member"
      id="t_1697_1f82950f_e9cc_6254_ffcc_a9e0204b3e8e">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080891Member"
      id="t_1717_faf9f539_0a53_88b2_050f_d1df303546bd"> iSHARES&#xae; iBONDS&#xae; OCT 2031 TERM TIPS ETF  Ticker: IBIHStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080891Member"
      id="t_652_9e3dbdf4_d387_44c2_8bc9_28989131fb63">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080891Member"
      id="t_653_4924f397_3a9c_45ea_9542_5ede2c5adaf1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2031 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2031.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080891Member"
      id="t_654_7616d52e_7105_4082_9015_e464d9e2884f">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080891Member"
      id="t_655_d567ab56_ea49_4789_ab6c_3920729f95ad"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2031. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080891Member"
      id="t_1718_80ce2387_b89f_0511_47fc_3ba6871717af">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080891Member"
      id="t_1719_957537c5_8d35_8ba9_d1a6_896dd0715f44">October 15, 2031</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080891Member"
      id="t_1720_8916321d_28bd_4372_1d8e_f88f3b4457a7">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1696_55b30425_85a8_420b_9e45_d4405ae81670"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1697_cc2ce611_f399_4752_8c63_e41b8c3c6330"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1698_57706d73_ab5d_4ec6_82ba_3911f1db4305"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1699_7814cc42_56af_41b2_b417_e733bf23e2b1"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1700_083a6d2b_5b97_495a_bbe9_69907de7539a"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1701_8c0a8faa_fb48_4327_bae1_6441f89c487a"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1702_3bb43e9d_7115_444c_bf5d_14effe80d573"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080891Member"
      id="t_1721_645bab6e_8d91_8ed9_a92f_c575ef51d333">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080891Member"
      id="t_1757_015c557c_0c69_f3dd_d69b_476153c6538d">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2031 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080891Member_C000243463Member"
      decimals="INF"
      id="h_1703_4fb4881c_819c_4afd_bd9c_49f42d7775a5"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080891Member_C000243463Member"
      decimals="INF"
      id="h_1704_ba39b5d9_4266_40bb_a07b_f827ed8db138"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000080891Member_C000243463Member"
      decimals="INF"
      id="h_1705_7593f5c4_a11d_4886_b00e_c867d16b334f"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000080891Member_C000243463Member"
      decimals="INF"
      id="h_1706_b64ccc55_3a7f_487b_b96a_0df3d8682474"
      unitRef="USD">78</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080891Member"
      id="t_1722_c13e02d7_a108_3140_e0da_ccbaf26cc4c7">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080891Member"
      id="t_1723_6613628e_880e_2a33_7c3e_6b178b230788">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080891Member"
      decimals="4"
      id="h_1707_5b8ea817_5dfc_489e_97f8_86e4ae07f3ec"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080891Member"
      id="t_657_27994702_72c7_4a03_8a4b_c528888da6de"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080891Member"
      id="t_658_e232c3e8_1013_4496_a464_489841bbeb2e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2031 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2031 and October 15, 2031, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2031, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 2 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2031, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080891Member"
      id="t_659_1d1f818b_aa10_447a_8d73_8ae81abb35a7"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080891Member_RiskLoseMoneyMember"
      id="t_1724_63296fe5_a9f4_b322_b11e_ee43e87b6291">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_USTreasuryObligationsRiskMember"
      id="t_1725_0885046a_141d_37a3_6167_9badd5d69333"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_InflationIndexedBondsRiskMember"
      id="t_1726_3c1bce35_e989_9a3b_a8c2_26974ca69aee"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_InterestRateRisksMember"
      id="t_1727_0735b3a8_e292_8edc_5fce_03fd744195f4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_MarketRiskMember"
      id="t_1728_4dcdad72_a39d_9be9_9376_d85f82ac52b8"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080891Member_IndexRelatedRiskMember"
      id="t_1729_a722be3b_b968_3312_56f5_326c39b82b61"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080891Member_AssetClassRiskMember"
      id="t_1730_ccb17067_ceac_bbfd_fc7e_27fc10e9cadc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_AssetsUnderManagementAUMRiskMember"
      id="t_1731_b5ee56ec_9963_d216_1437_56c08115aa28"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1732_bf354b84_fc72_20e4_839c_384f3563066f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_ConcentrationRiskMember"
      id="t_1733_5fc92bd5_4c26_4629_bdbd_caafc400ab0c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_CybersecurityRiskMember"
      id="t_1734_71f6ae6c_c3a7_9e18_d8d6_727f7057057b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000080891Member_DecliningYieldRiskMember"
      id="t_1735_805c9ab9_c978_fba5_b1d6_b8c49b239459"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_IncomeRiskMember"
      id="t_1736_75e2ec89_dbf4_e3af_da30_fa24756589b9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_IssuerRiskMember"
      id="t_1737_8ef6e31a_cfa5_e5a7_c33e_496ddafc5bd1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_ManagementRiskMember"
      id="t_1738_58968afd_1625_75e4_8fc8_c32d489fdabf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_MarketTradingRiskMember"
      id="t_1739_230cd8a5_6465_f7c8_6d38_432fe4815838"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_OperationalRiskMember"
      id="t_1740_0df75a85_2824_6073_8fed_28de14bfbc97"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_RiskOfInvestingInTheUSMember"
      id="t_1741_b08dc162_b114_fb7d_b33f_15bb3440ca79"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_SecuritiesLendingRiskMember"
      id="t_1742_fb21dddf_d18d_1b4f_e239_d05bc243de5d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_SmallFundRiskMember"
      id="t_1743_214355ea_2d8d_7979_e205_b62966c85f57"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080891Member_TrackingErrorRiskMember"
      id="t_1744_8da6e50e_6d79_035b_be12_11c65ec2996d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080891Member"
      id="t_660_4d893044_95c7_4056_b44e_b74582a6c28a"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080891Member"
      id="t_1745_734c9213_05cc_66fb_b193_38cecd244aea"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080891Member"
      id="t_1746_c2d2091e_be98_5bd4_974d_62aab22e2f56">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080891Member"
      id="t_1747_0c3ffec0_c71f_6f5a_1b90_b8f358ccc3fd">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080891Member"
      id="t_1748_486061ed_4ce7_b460_627e_5754faf0afd6">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080891Member"
      id="t_1749_a71e410d_d3ec_a578_9ab4_2b0be57abdde">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080891Member"
      id="t_1750_e2362882_0ed9_e0cb_485b_f2afbb6bc8a3"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080891Member"
      id="t_1751_6586f8fb_be07_f564_9eb6_167d3f28a0d5"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;4.52%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-3.23%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080891Member_C000243463Member"
      id="h_1711_5805c49d_5818_4119_a27c_f4cd547f1201">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1712_c0ca27ed_f5e3_4b39_8889_21181b2bd8e6"
      unitRef="pure">0.0452</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080891Member_C000243463Member"
      id="h_1713_82e2df8f_b96b_4d89_9028_ed4b8bb83d60">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080891Member_C000243463Member"
      id="h_1714_85203cec_535d_4140_95b3_0da5b08710d9">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1715_84ba0953_8b0b_4707_873d_1ab3babca067"
      unitRef="pure">-0.0323</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080891Member_C000243463Member"
      id="h_1716_4cfbc477_ce90_40ea_8515_99be4be185b4">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080891Member"
      id="t_662_1e149fcb_21cb_4f2c_88b7_95881b5bc7f3">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080891Member_C000243463Member"
      id="t_1752_726958ed_edd5_bb3b_d507_92da86c8dcf0">2023-09-19</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1717_70b6b38a_dbdb_4971_80ed_135e19291c02"
      unitRef="pure">0.0186</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080891Member_C000243463Member"
      decimals="4"
      id="h_1718_2083b498_f31d_4d7f_9671_5bd332c247da"
      unitRef="pure">0.0424</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080891Member_C000243463Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1719_b3c5f846_e7a4_4db9_a6c0_28ae960960cc"
      unitRef="pure">0.0011</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080891Member_C000243463Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1720_c4cfb04a_5664_44ec_953c_21bf724c94e8"
      unitRef="pure">0.0261</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080891Member_C000243463Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1721_67806787_6bfc_48b4_8426_c3014d2a2d71"
      unitRef="pure">0.0110</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080891Member_C000243463Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1722_ec452143_ef94_4db9_8ec3_89ba26eabd21"
      unitRef="pure">0.0255</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080891Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1723_92c4edc8_3cc7_43ca_ac0a_47caae7b7c61"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080891Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1724_9bc7d08a_9cff_4346_bd4e_f4f2333aa196"
      unitRef="pure">0.0525</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080891Member_ICE2031MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1725_cb75e46f_75bb_4ed1_98b1_447a88c30df7"
      unitRef="pure">0.0195</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080891Member_ICE2031MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1726_5fb17e04_7d19_49c5_b97d_efa9ec3fd59d"
      unitRef="pure">0.0433</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080891Member"
      id="t_1753_15570081_e915_2cfd_de4c_16574281ab36"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080891Member"
      id="t_1754_0cabf3af_fec0_44fe_48d0_d2d416cd34cd">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080891Member"
      id="t_1755_06737508_1e8f_0e9d_cc0d_d16017f5b4ff">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080891Member"
      id="t_1756_b0c23f7d_a716_753f_1eeb_d49de9d5a803">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080892Member"
      id="t_1748_daf6199d_abbe_9820_bd95_9a6c4adfcb35"> iSHARES&#xae; iBONDS&#xae; OCT 2032 TERM TIPS ETF  Ticker: IBIIStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080892Member"
      id="t_663_f4f3d087_ed3e_4a42_beac_07779e70393b">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080892Member"
      id="t_664_7cb9e608_d864_453e_93dc_da4dbc444a3a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2032 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2032.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080892Member"
      id="t_665_74a99e72_3619_420b_a02e_2dfc921129ed">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080892Member"
      id="t_666_948076cc_68be_4f15_80f0_7e750e6f1a7e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2032. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080892Member"
      id="t_1749_64474bed_ee5b_54b0_d89f_03b836be93e0">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080892Member"
      id="t_1750_60c559e9_5c5d_9f98_5234_ed99fbbb7f79">October 15, 2032</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080892Member"
      id="t_1751_227f88f2_3cfd_0341_db8a_6e6cd3f0cb33">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1727_2ebadbfa_f069_4650_9661_0bf308880993"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1728_0797d1c8_fcd3_4755_8a6f_a28649f75d9e"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1729_ca6ce2c6_a3a0_466e_a0a6_ba7464921a8f"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1730_6e873616_6b5c_435d_ad4a_5702922c9cbb"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1731_3c96d1cd_4fd1_41e9_a5d8_ffd32466fd9a"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1732_240e9af0_7023_4980_aca1_aacb3b893805"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1733_d589c992_5ff7_4148_a658_0770f5d6b4d6"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080892Member"
      id="t_1752_1174a211_c863_1761_c33c_59065ae2eaed">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080892Member"
      id="t_1753_13581c67_be4d_57d6_8114_eea22320b361">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2032 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080892Member_C000243464Member"
      decimals="INF"
      id="h_1734_e5336e71_cc5d_44ca_8c4a_861abd6fa2ca"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080892Member_C000243464Member"
      decimals="INF"
      id="h_1735_68bd6989_6d1b_40b3_aa19_5a0d6819add2"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000080892Member_C000243464Member"
      decimals="INF"
      id="h_1736_9df017be_ffe1_46c3_b032_0e15c5ed315b"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000080892Member_C000243464Member"
      decimals="INF"
      id="h_1737_ee1e04bb_e6a7_4406_9fbd_e04abe4a59cd"
      unitRef="USD">92</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080892Member"
      id="t_1754_4b50cb5f_2a96_598b_39d4_3f969715ac2a">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080892Member"
      id="t_1755_45b91bee_0b59_138b_37ca_876c9a3203a0">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 0% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080892Member"
      decimals="4"
      id="h_1738_c995726c_b40d_4927_9ae2_cfa170b4ccce"
      unitRef="pure">0</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080892Member"
      id="t_668_1027f098_4b33_468a_afa5_0d19f12527f0"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080892Member"
      id="t_669_2b77a4d0_e869_403b_8cd0_6fa11e245e73"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2032 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2032 and October 15, 2032, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2032, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 3 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2032, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080892Member"
      id="t_670_456b0635_f05a_412a_9ac3_34924dfca699"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080892Member_RiskLoseMoneyMember"
      id="t_1756_bb7239fa_a904_fa85_bc5f_5423eef44b12">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_USTreasuryObligationsRiskMember"
      id="t_1757_8654bb3d_500a_749c_60bf_d49eabdf8c23">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080892Member_InflationIndexedBondsRiskMember"
      id="t_1758_2a22ffb4_291a_b03e_73a0_c3bb8e619de4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_InterestRateRisksMember"
      id="t_1759_0d3ef4d0_6298_4310_a54a_6f2ce0394a6a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_MarketRiskMember"
      id="t_1760_bb6117d9_5b9c_a2c9_a2b7_0f23d7f8f03b">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_IndexRelatedRiskMember"
      id="t_1761_5548c7ca_59be_5122_fa9a_4bda099d42b1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_AssetClassRiskMember"
      id="t_1762_b2a86e3a_cc1b_7bd0_033c_4f0704a5c788">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_AssetsUnderManagementAUMRiskMember"
      id="t_1763_f311d60e_5e9f_3427_cd4b_04675098e803">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1764_6181e6d0_db95_882d_2a3b_349dbdc14469">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_ConcentrationRiskMember"
      id="t_1765_d1386cd5_7864_7f95_5e52_3b9139ad305e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_CybersecurityRiskMember"
      id="t_1766_eb86099e_ee6c_6abf_ebcf_459ad81893c8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_DecliningYieldRiskMember"
      id="t_1767_090f7347_d92a_6b9c_eaf3_e1f6cace7928">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080892Member_IncomeRiskMember"
      id="t_1768_dbc74d83_58b9_5b74_ea73_bfccbba581bd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_IssuerRiskMember"
      id="t_1769_e430964b_e356_8bab_fdbd_cb9c769b5561">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_ManagementRiskMember"
      id="t_1770_0a1ea252_030a_e818_672d_f4820d94e448">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_MarketTradingRiskMember"
      id="t_1771_f3cc9177_694e_7808_44d4_41a839f39582">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_OperationalRiskMember"
      id="t_1772_027f6938_9215_1c41_77d0_8ef5b68b619d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_RiskOfInvestingInTheUSMember"
      id="t_1773_45b43990_937e_84b2_a4cb_35f6547f8ab9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_SecuritiesLendingRiskMember"
      id="t_1774_50f9df85_6f01_481d_b917_ce79ff95c753">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_SmallFundRiskMember"
      id="t_1775_24e8a5c9_9ef6_6d1c_7bbd_6894b828136e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080892Member_TrackingErrorRiskMember"
      id="t_1776_4574cb68_6ab8_9047_2834_91811135f79d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080892Member"
      id="t_671_611fec5a_7c33_4fe5_8cee_4c69de0ac317"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080892Member"
      id="t_1777_3e2ceb0e_8303_1a1c_9e63_5c86cd59e1dc">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080892Member"
      id="t_1778_330c574e_b401_308f_f70a_f5be22fcce5e">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080892Member"
      id="t_1779_230fe154_7a26_d924_737a_afb39a90977c">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080892Member"
      id="t_1780_a76d0df8_a7ad_64b0_e8bd_3df5bf7871cf">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080892Member"
      id="t_1781_3489b4c4_5dc6_38ea_f774_04d8bad69e00">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080892Member"
      id="t_1782_b69a82f5_28a4_5610_083a_ccbf79dbdfb6">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080892Member"
      id="t_1783_7a601219_55e8_2844_c724_ce42ddd308fe">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;4.85%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-3.83%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080892Member_C000243464Member"
      id="h_1742_51f471b0_e7b5_4c75_bf47_4e7198105fb9">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1743_ee118f60_8de9_443f_9f90_9aa5edc91854"
      unitRef="pure">0.0485</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080892Member_C000243464Member"
      id="h_1744_cf5b8fa2_42f4_4a78_a958_4644976a5dbb">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080892Member_C000243464Member"
      id="h_1745_bf921742_cc55_4d7a_8d7b_cb942cb018e4">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1746_454edf61_e56a_4f12_bc27_ac1c76092ade"
      unitRef="pure">-0.0383</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080892Member_C000243464Member"
      id="h_1747_cba5f5db_047f_4522_811f_679361c813cd">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080892Member"
      id="t_673_fb3c44f1_c20e_412e_a2e1_333fcd8022b4">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080892Member_C000243464Member"
      id="t_1784_50fad97f_ad58_449a_3c42_2678bf073099">2023-09-19</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1748_2865a0ef_336e_4dd3_b849_7f1dc7c34a5f"
      unitRef="pure">0.0125</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080892Member_C000243464Member"
      decimals="4"
      id="h_1749_e0d36e07_bb50_4c27_9520_8da313402f3a"
      unitRef="pure">0.0389</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080892Member_C000243464Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1750_738288b9_545a_4541_9a21_6f2bc4f58091"
      unitRef="pure">-0.0065</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080892Member_C000243464Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1751_0faa1786_a665_41fd_8e32_c7da65ec4042"
      unitRef="pure">0.0201</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080892Member_C000243464Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1752_e7df317a_2cb7_47be_9b2d_81bc400788a0"
      unitRef="pure">0.0074</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080892Member_C000243464Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1753_012967c4_a7bc_455d_a3d4_6ba4bcf168be"
      unitRef="pure">0.0219</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080892Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1754_7329d574_2c69_45d6_9efa_def39bb72e66"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080892Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1755_5f4b7bb1_7ffd_453f_88f0_5b34c64ca6c2"
      unitRef="pure">0.0525</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080892Member_ICE2032MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1756_9d229c91_eebc_44fd_ac73_6a1ff2688fce"
      unitRef="pure">0.0132</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080892Member_ICE2032MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1757_27d0bc2b_d592_4514_a9b1_3aed870a0b2c"
      unitRef="pure">0.0398</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080892Member"
      id="t_1785_1ab63bc3_af2a_febe_b0bb_83f122aea809">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080892Member"
      id="t_1786_5c88c86a_1d7b_eb15_2db5_810f5ea7b1ae">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080892Member"
      id="t_1787_4752361f_1741_2356_47d4_8b88ef59a2ca">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080892Member"
      id="t_1788_a7f4417c_9290_1334_26ee_ad43a826ee96">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080884Member"
      id="t_1779_1d0b3c02_1f53_e512_8013_8839625bdc7b"> iSHARES&#xae; iBONDS&#xae; OCT 2033 TERM TIPS ETF  Ticker: IBIJStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080884Member"
      id="t_674_b893a9b5_65a3_441e_b734_181dde8ba667">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080884Member"
      id="t_675_fdd60b97_1406_402e_bfd5_2a9c05692b1d"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2033 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2033.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080884Member"
      id="t_676_0204972a_ff36_4a97_a69b_70756ced8d7d">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080884Member"
      id="t_677_f45ba2e2_74e8_4c56_9ca5_e1f2f106d20d"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2033. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080884Member"
      id="t_1780_00d54b94_8083_7d98_4e15_bc0162de6fe2">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080884Member"
      id="t_1781_1e85170a_8cd0_b7c3_b688_5c8dbcdf7eaf">October 15, 2033</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080884Member"
      id="t_1782_62c55976_b81e_84b8_59a1_59203b734d09">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1758_ae82ead2_3fdd_41fd_a467_e322fd003aaa"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1759_d44ff7d6_d700_4976_91bd_162d6a88c47d"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1760_c31b06d5_3b35_4d88_a533_00d5c0c83d1c"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1761_f419fa6e_447e_44ec_85d8_690d1c7b8c41"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1762_cb01baf8_422c_4451_b1df_7190111b65b2"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1763_e64b58ed_36c9_4ba1_98c3_e1ab1243ed06"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1764_a8e2e663_04ef_4279_85e5_af8bd88ccc09"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080884Member"
      id="t_1783_d067a6be_b97e_0453_0ba4_458501a64fbe">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080884Member"
      id="t_1784_5379e400_03cb_c794_6d64_e80545e47c05">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2033 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080884Member_C000243456Member"
      decimals="INF"
      id="h_1765_92586563_47d1_4d7d_8e12_23adc395e827"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080884Member_C000243456Member"
      decimals="INF"
      id="h_1766_3c3a0a73_fc5b_4e87_bd23_251b82725bb7"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000080884Member_C000243456Member"
      decimals="INF"
      id="h_1767_7ad6745d_e006_4603_a7e2_13ffcebeb8dc"
      unitRef="USD">56</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000080884Member_C000243456Member"
      decimals="INF"
      id="h_1768_99ac6ddc_28bc_4012_a553_c9495d960894"
      unitRef="USD">107</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080884Member"
      id="t_1785_40deef07_b445_1b38_e7fe_08b7a01ae5d1">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080884Member"
      id="t_1786_664035d9_39a7_e6ea_0559_be0056fc905b">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 5% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080884Member"
      decimals="4"
      id="h_1769_2ea45c5e_feb6_4b11_bed8_c8f018b75f45"
      unitRef="pure">0.05</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080884Member"
      id="t_679_c094d042_fe3a_4525_a02b_7f8c9a8dc6ef"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080884Member"
      id="t_680_598afcea_6fee_4a71_9541_ad5ea6220ef0"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2033 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2033 and October 15, 2033, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2033, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 2 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2033, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080884Member"
      id="t_681_5ad008c3_38f5_4ff8_897c_ae40eaadeb2a"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080884Member_RiskLoseMoneyMember"
      id="t_1787_d36420d4_a6e9_4f2f_a3a6_6d4853273750">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_USTreasuryObligationsRiskMember"
      id="t_1788_ee13050f_969b_fb50_f0dd_343a11efa50f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_InflationIndexedBondsRiskMember"
      id="t_1789_0f6398bd_a8f4_2061_2c04_e2873bc59475">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_InterestRateRisksMember"
      id="t_1790_8e2dc395_cf2a_3ccc_eadd_e4157e5cf155">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_MarketRiskMember"
      id="t_1791_be0e54f7_332e_c17f_5b8a_c3829dfc6e99">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_IndexRelatedRiskMember"
      id="t_1792_1df21b71_a7b6_46d6_4df0_6a9e93be1e56">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_AssetClassRiskMember"
      id="t_1793_740ae841_8eaf_c1e7_4cb1_ce0be7768dd2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_AssetsUnderManagementAUMRiskMember"
      id="t_1794_69474852_b9a4_be97_0df5_1e8d9d238bcf">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1795_bd94ea2d_533e_7d26_4851_516ead2b2235">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_ConcentrationRiskMember"
      id="t_1796_a60b47a6_151a_69a5_0656_3ad7db06cffb">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_CybersecurityRiskMember"
      id="t_1797_a5f8061f_e844_ebb9_5b80_f2975e8acf67">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_DecliningYieldRiskMember"
      id="t_1798_82c19a39_5a52_c6b0_d0d8_f2603419dd8f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000080884Member_IncomeRiskMember"
      id="t_1799_f2f8054f_b51e_9f5a_3d73_6ea26d75b4bd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_IssuerRiskMember"
      id="t_1800_99950174_62c8_1cf6_82f1_5deaa32de415">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_ManagementRiskMember"
      id="t_1801_07a7ee1e_662b_ab74_e91e_d0b92d47e8d4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_MarketTradingRiskMember"
      id="t_1802_badf9e94_c173_79d7_f536_582ca97cc384">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_OperationalRiskMember"
      id="t_1803_816bc158_5183_a5c5_77f7_e97258e10742">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_RiskOfInvestingInTheUSMember"
      id="t_1804_d187cb87_f216_8cc2_2bab_747c1efa1ff8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_SecuritiesLendingRiskMember"
      id="t_1805_e7b11dda_5188_6fb7_8757_202fb4891e49">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_SmallFundRiskMember"
      id="t_1806_f1881ce3_115d_8e55_f58d_b5e844fdf5a8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080884Member_TrackingErrorRiskMember"
      id="t_1807_09d637e1_3740_fbca_908d_013d86778082">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080884Member"
      id="t_682_4dcf7298_7e4e_47f5_9de8_4ae6600dec6c"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080884Member"
      id="t_1808_a3da1018_6237_76d8_eac6_66aa7e70115d">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080884Member"
      id="t_1809_9353618b_7c32_5e7e_6d9e_2f5f62732ccb">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080884Member"
      id="t_1810_b8b14e3c_10f2_fc6d_1581_3b6f080789f1">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080884Member"
      id="t_1811_8975e807_eef4_49bd_5aef_cd36dd81f227">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080884Member"
      id="t_1812_45247252_af07_3043_694d_26ddfba48f13">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080884Member"
      id="t_1813_a034b799_19d0_32ef_7e84_1aaf519a109f">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080884Member"
      id="t_1814_13bd0425_0956_1585_e683_ddbdfe4fedc7">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;5.02%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.23%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080884Member_C000243456Member"
      id="h_1773_8cd89af6_3a29_4dee_8a99_795dc039b1ba">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1774_2134a653_8f71_424b_a1a1_c972e9b596f9"
      unitRef="pure">0.0502</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080884Member_C000243456Member"
      id="h_1775_29be6900_68f0_4a8a_8fc0_7a48f24c057c">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080884Member_C000243456Member"
      id="h_1776_cbd46576_eb8b_4921_a71f_35d8424f5608">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1777_e2470c4b_5559_4803_bafd_11218e744e27"
      unitRef="pure">-0.0423</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080884Member_C000243456Member"
      id="h_1778_92c43e1f_8b06_4f93_833f_48ef01319105">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080884Member"
      id="t_684_bd9479c0_ea90_4ede_b428_8271aebf476d">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080884Member_C000243456Member"
      id="t_1815_c6f08584_beb6_9ffb_f474_eb1d77cef557">2023-09-19</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1779_de750a4f_ff39_450b_b034_b4e99eadf859"
      unitRef="pure">0.0063</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080884Member_C000243456Member"
      decimals="4"
      id="h_1780_e62ae551_77dc_4494_bef4_da4b843da542"
      unitRef="pure">0.0343</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080884Member_C000243456Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1781_486a0df0_f214_4860_b1a5_54500fed4cbc"
      unitRef="pure">-0.0113</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080884Member_C000243456Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1782_29cae83b_247d_48cd_b9c3_5e4ba0ad667e"
      unitRef="pure">0.0182</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080884Member_C000243456Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1783_964e85a3_702a_44c3_a10c_1c0ab48d92f1"
      unitRef="pure">0.0037</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080884Member_C000243456Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1784_796ace64_402d_40a1_8613_c191fefed67d"
      unitRef="pure">0.0195</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080884Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1785_55942525_b565_4137_bcd7_1c1699e48878"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080884Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1786_622cf66b_c263_46b1_a928_5e1c405e2971"
      unitRef="pure">0.0525</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080884Member_ICE2033MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1787_d33c26a7_8206_4b7e_851b_425ad141d238"
      unitRef="pure">0.0070</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080884Member_ICE2033MaturityUSInflationLinkedTreasuryIndexMember"
      decimals="4"
      id="h_1788_0331c567_583e_406b_8834_cbb7347af2b6"
      unitRef="pure">0.0346</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080884Member"
      id="t_1816_cf7ad8f6_a210_ba20_f12c_c6fdac8cbe7d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080884Member"
      id="t_1817_30a439b9_6766_5b28_650b_55a70aea1957">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080884Member"
      id="t_1818_88c77c9c_8929_1f6e_b2c4_21c942c74c36">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080884Member"
      id="t_1819_a14441ef_081d_0330_0533_fe261653fdb3">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000085097Member"
      id="t_695_5a31628b_a0d6_5c52_3adb_56414a35a89f">iSHARES&#xae; iBONDS&#xae; OCT 2034 TERM TIPS ETFTicker: IBIKStock Exchange: NYSE Arca </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000085097Member"
      id="t_685_d1c9880b_ede8_4707_adf3_15c53edc4c5f">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000085097Member"
      id="t_686_0b3d6900_ca1f_43e9_9ffd_4d7af9ecbf17"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Oct 2034 Term TIPS ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury bonds maturing in 2034.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000085097Member"
      id="t_687_d544b823_5e95_4ff8_b8d2_20d81ae1923d">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000085097Member"
      id="t_688_f0ecdc31_f5ea_4a74_a0bb_a94da8fe49fc"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2034. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the Trust &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000085097Member"
      id="t_696_50756b21_d06f_e55e_d9d1_c77328307f36">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000085097Member"
      id="t_697_f1ff87f8_8793_5833_386c_26549aa56343">October 15, 2034</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000085097Member"
      id="t_698_3cdf9a5e_8f4c_17fe_a9c8_ec54dfe18dd3">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000085097Member_C000249962Member"
      decimals="4"
      id="h_1789_2158bc64_3e85_4f36_8e55_4415fce5df9c"
      unitRef="pure">0.0010</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000085097Member_C000249962Member"
      decimals="4"
      id="h_1790_6da1e50a_29a7_4c3a_86c2_3bb2cedfe525"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000085097Member_C000249962Member"
      decimals="4"
      id="h_1791_88e2a7e5_c79e_4b8f_acef_ee3173ddf577"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000085097Member_C000249962Member"
      decimals="4"
      id="h_1792_9abc7d03_23d7_4ef0_b060_40a0bd1445c2"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000085097Member_C000249962Member"
      decimals="4"
      id="h_1793_b5a166b4_ef5d_462d_9ac9_2b4bf462a096"
      unitRef="pure">0.0010</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000085097Member_C000249962Member"
      decimals="4"
      id="h_1794_531b72a6_34f8_4c97_ba0e_9d46a27e26da"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000085097Member_C000249962Member"
      decimals="4"
      id="h_1795_041ef8d6_724c_4f7f_af78_bbe9bf0caa3c"
      unitRef="pure">0.0010</rr:NetExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000085097Member"
      id="t_724_d165afd2_f2d0_c08e_4da2_2304e59964b9">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000085097Member"
      id="t_725_abcbf3f0_4121_a0d8_322a_17af00303da1">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000085097Member"
      id="t_699_f88b3f93_bbc1_a22f_6593_2d5afb83dd3b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000085097Member"
      id="t_700_5579473e_bcb8_a7f5_424f_8566eac48894">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through October 15, 2034 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000085097Member_C000249962Member"
      decimals="INF"
      id="h_1796_81ebbc3e_b216_4497_a1f3_a835f601c7f2"
      unitRef="USD">10</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000085097Member_C000249962Member"
      decimals="INF"
      id="h_1797_dc8f57e5_edbb_4eca_bc8c_c7cf92158583"
      unitRef="USD">32</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000085097Member"
      id="t_701_ff25d57a_3f0e_91db_5972_4d6106d4ea56">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000085097Member"
      id="t_702_13153e32_c3ce_7a87_536e_5127d899d1cc">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. From inception (May 22, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 50% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000085097Member"
      decimals="4"
      id="h_1798_795fc64a_1922_44f9_ab69_cb63f449ab16"
      unitRef="pure">0.50</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000085097Member"
      id="t_690_d685ed0b_2f4d_4f90_811f_b43d82233ddd"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000085097Member"
      id="t_691_016d56da_4d3b_4e26_803e_beb0aad30535"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE 2034 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Maturity US Inflation-Linked Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which consists of inflation-protected public obligations of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that are scheduled &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to mature between January 1, 2034 and October 15, 2034, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusive. The Fund is a term fund that will terminate on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;October 15, 2034, at which time it will distribute its remaining net &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets to shareholders pursuant to a plan of liquidation. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not seek to return any predetermined amount at maturity or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in periodic distributions. As of October 31, 2024, there were 2 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS are securities issued by the U.S. Treasury that are designed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to provide inflation protection to investors. TIPS are income-generating&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; instruments whose interest and principal payments are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted for inflation&#x2014;a sustained increase in prices that erodes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the non-seasonally adjusted Consumer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Price Index for All Urban Consumers (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and TIPS&#x2019; principal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments are adjusted according to changes in the CPI. A fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rate is applied to the inflation-adjusted principal so that, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as inflation rises, both the principal value and the interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;payments increase. This can provide investors with a hedge &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;against inflation, as it helps preserve the purchasing power of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment. Because of this inflation adjustment feature, inflation-protected&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; bonds typically have lower yields than conventional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and have (1) a fixed coupon schedule, (2) a remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term to final maturity of more than one day as of the monthly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date and (3) at least $1 billion of outstanding face &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value (excluding amounts held by the Federal Reserve System &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;)). Excluded from the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are government agency debt with or without a government &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;guarantee, securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors, floating rate notes, cash management and Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bills, original issue zero coupon securities and Separate Trading of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;However, the amounts outstanding of qualifying securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are not reduced by any portions of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA times price plus accrued &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;each month. New issues must settle on or before the following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar month end rebalancing date in order to qualify for &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inclusion for such following month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before August 31 in order to be included in the index on July 31). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index are updated on the last &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar day of each month. Cash flows from bond payments that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. When cash or a security is removed as part of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing, it effectively increases the weighting of the remaining &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index, and the Fund is required to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in the remaining securities to bring its holdings in line with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Cash does not earn any reinvestment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;income while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By October 15, 2034, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000085097Member"
      id="t_692_472c51fe_8af8_427f_8585_a9b67ba1f2b4"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000085097Member_RiskLoseMoneyMember"
      id="t_703_6c320720_9fbc_0471_65be_d21ccc3fec4a">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_USTreasuryObligationsRiskMember"
      id="t_704_fa716c41_7446_afd2_2ea2_d1b87bdc5ce7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_InflationIndexedBondsRiskMember"
      id="t_705_da934f0e_5b49_8efd_689e_765746d83e9c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_InterestRateRisksMember"
      id="t_706_0f3ae5dd_53d3_6c50_3cdd_912b91c6ecf9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_MarketRiskMember"
      id="t_707_aa6fa0c7_dc98_9533_9eb6_71559f749695">&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_IndexRelatedRiskMember"
      id="t_708_6c5fb0a1_c3e3_177d_e200_3382cbbc219d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_AssetClassRiskMember"
      id="t_709_bf4b72b9_da34_4131_f271_5b478294f3e6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_AssetsUnderManagementAUMRiskMember"
      id="t_710_f5a77095_ce4e_0aa7_5f9b_a9b6d627ee57">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_711_e1a2858c_ca28_f4cc_0ccc_19a249266967">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_ConcentrationRiskMember"
      id="t_712_a7719c4a_e290_0f54_55ec_10c3f8cfd767">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_CybersecurityRiskMember"
      id="t_713_51af161b_b209_8796_aee9_886c91b8954c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_DecliningYieldRiskMember"
      id="t_714_ec92e25c_e2f2_4b95_1bd2_e0f8c2a08dde">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000085097Member_IncomeRiskMember"
      id="t_715_21f1aec0_2255_bc46_68d0_8bdff2e58a06">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_IssuerRiskMember"
      id="t_716_ca9b16bd_dcb1_9554_2004_55d60b112cc4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_ManagementRiskMember"
      id="t_717_97b69e58_7061_c61e_ac46_b20bb8ab3151">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_MarketTradingRiskMember"
      id="t_718_7069b830_2706_9a04_0beb_ac5acfee493f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_OperationalRiskMember"
      id="t_719_f86388cf_b201_663a_6f40_175741382141">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_RiskOfInvestingInTheUSMember"
      id="t_720_46370367_11be_e2fd_a07b_10aec505eb98">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_SecuritiesLendingRiskMember"
      id="t_721_219324c8_1a6c_41ad_813f_6446b3bd4b35">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_SmallFundRiskMember"
      id="t_722_fad49ce2_797b_a6d8_3bd9_a830dd49718f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085097Member_TrackingErrorRiskMember"
      id="t_723_d9d59716_bd1c_0e52_9a37_b87042739054">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000085097Member"
      id="t_693_e7caac03_1347_43e6_8415_0b309a2f7d20"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000085097Member"
      id="t_694_bfc7c98d_a1b4_4ee6_aed9_6a474dd9d694"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000085097Member"
      id="t_726_ee1c87be_2d91_ce7b_4eb5_f1dd101e6e1d">As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report.</rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000004363Member"
      id="t_1817_f3b033c6_0bf7_2f1e_877a_7347dc82b9ce"> iSHARES&#xae; TIPS BOND ETF  Ticker: TIPStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000004363Member"
      id="t_695_e0e74c09_fa34_481c_8851_b66aafe87d37">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000004363Member"
      id="t_696_7aef1f1b_c0d2_453a_97ce_92e5699aeff5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares TIPS Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of inflation-protected U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000004363Member"
      id="t_697_7629662f_5469_4c87_a79e_2650f5aa9877">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000004363Member"
      id="t_698_d61ff779_ab33_4612_9b51_27639489832e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000004363Member"
      id="t_1818_5b62e483_da77_ec7a_2a17_29013af066f7">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1799_9bd55e26_cb2f_4689_98b7_679ad7278153"
      unitRef="pure">0.0018</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1800_d9d5e414_0886_4b8f_a786_f61a597aa722"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1801_0fb14847_6a64_492f_a54a_9a574fc32db2"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1802_c0c3fd28_1373_4a51_a93f_a05a3af098d1"
      unitRef="pure">0.0018</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000004363Member"
      id="t_1819_f00d3047_b5cf_7ccf_3b90_3b72d375832b">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000004363Member"
      id="t_1820_90f40c4a_9831_e8b8_f181_1a193440cb74"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000004363Member_C000012093Member"
      decimals="INF"
      id="h_1803_0250ad13_8c9b_49e3_97cb_2facb8a7834e"
      unitRef="USD">18</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000004363Member_C000012093Member"
      decimals="INF"
      id="h_1804_a82a904e_264a_4e13_a98b_f671b8fbae16"
      unitRef="USD">58</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000004363Member_C000012093Member"
      decimals="INF"
      id="h_1805_8318d7b0_b8c8_41eb_8e6c_bdc21b6b8f96"
      unitRef="USD">101</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000004363Member_C000012093Member"
      decimals="INF"
      id="h_1806_b5e948fa_ed4e_4db4_8d15_5a2cba0f153e"
      unitRef="USD">230</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000004363Member"
      id="t_1821_904276d7_1b8d_7b30_eef4_435fb77495bc">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000004363Member"
      id="t_1822_2467e0de_71cf_fa74_360a_16c4d3c759f0">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 22% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000004363Member"
      decimals="4"
      id="h_1807_2141711c_e3f8_4053_a07c_f9fa793833d5"
      unitRef="pure">0.22</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000004363Member"
      id="t_700_73007a63_8dd3_43d9_a453_f1266786657d"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000004363Member"
      id="t_701_cf1ad62b_594f_41ce_b53b_7e11960c2bae"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury Inflation Linked Bond Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which tracks the performance of inflation-protected public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury, commonly known as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a remaining maturity of more than one year. TIPS are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities issued by the U.S. Treasury that are designed to provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation protection to investors. TIPS are income-generating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments whose interest and principal payments are adjusted &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for inflation &#x2014; a sustained increase in prices that erodes the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchasing power of money. The inflation adjustment, which is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;typically applied monthly to the principal of the bond, follows a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;designated inflation index, the Consumer Price Index (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;TIPS' principal payments are adjusted according to changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;CPI. A fixed coupon rate is applied to the inflation-adjusted &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;principal so that, as inflation rises, both the principal value and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the interest payments increase. This can provide investors with a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;hedge against inflation, as it helps preserve the purchasing power &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of an investment. Because of this inflation adjustment feature, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation-protected bonds typically have lower yields than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conventional fixed-rate bonds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities must have more than one year remaining to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;final maturity as of the rebalancing date and at least $300 million &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of outstanding face value, excluding amounts held by the Federal &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). In addition, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index must have a fixed coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;schedule and must be denominated in U.S. dollars. Excluded from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are government agency debt with or without &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a government guarantee, securities issued or marketed primarily &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to retail investors, floating rate notes, cash management and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills, original issue zero coupon securities and Separate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trading of Registered Interest and Principal Securities (or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;STRIPs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). However, the amounts outstanding of qualifying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index are not reduced by any portions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of such securities that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Index constituents are market capitalization &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;weighted based on amounts outstanding reduced by amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;held by the Federal Reserve SOMA. The Underlying Index is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalanced on the last calendar day of each month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index. The Fund will invest no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000004363Member"
      id="t_702_adda4549_e205_4e04_a9a6_79215eda8297"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000004363Member_RiskLoseMoneyMember"
      id="t_1823_cfe700e5_0b64_bf24_e68f_3078b5705fe5">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_USTreasuryObligationsRiskMember"
      id="t_1835_e64423ba_f0bb_0f81_3308_76b9bb983933"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_InflationIndexedBondsRiskMember"
      id="t_1836_041bc170_d5ba_0a28_aa9d_3f56bd0137e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Inflation-Indexed Bonds Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The principal value of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment in the Fund is not protected or otherwise guaranteed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by virtue of the Fund's investments in inflation-indexed bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_InterestRateRisksMember"
      id="t_1837_079775be_44da_c202_71d5_81333de2cc89"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_MarketRiskMember"
      id="t_1838_da3fb77a_ab10_4d85_cba4_9aadde0b0af9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_IndexRelatedRiskMember"
      id="t_1839_be6192d4_ee7e_bb36_9d36_24836c7d02fd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_AssetClassRiskMember"
      id="t_1840_df7fab95_85c7_ea36_16a8_62edd16d0873"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1841_0263cb96_a070_2049_1fdc_9f4b3518b903"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_ConcentrationRiskMember"
      id="t_1842_ef4d71ef_c4f7_33d7_a789_fd90823ca8e8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_CybersecurityRiskMember"
      id="t_1843_84dcebd3_b24f_e11b_37f4_afd878bda04e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_IncomeRiskMember"
      id="t_1844_95080bf6_d8e2_b1b0_536a_ebabc4cf29f9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline due to a decline in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation, deflation or changes in inflation expectations.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_ManagementRiskMember"
      id="t_1845_010adf04_f37f_50dd_310d_a53f8028c7a8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_MarketTradingRiskMember"
      id="t_1846_8b337a12_65a6_c261_062d_6f01a58c4074"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000004363Member_OperationalRiskMember"
      id="t_1847_a60d869e_eb9b_0f88_0b32_c43d95299ce7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_RiskOfInvestingInTheUSMember"
      id="t_1848_c3fd4b56_80d4_5f29_2a9a_ea84aa518f30"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_SecuritiesLendingRiskMember"
      id="t_1849_f4799895_03d5_3bdb_5dd6_d6de110d4251"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000004363Member_TrackingErrorRiskMember"
      id="t_1850_e8b013d6_cbe7_86a6_aa0f_9d93d2916855"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000004363Member"
      id="t_703_d7cd6125_532b_4b0d_a17d_052f9748f5ad"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000004363Member"
      id="t_1824_d1e994e5_6d2b_c746_7106_a6361414b045"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000004363Member"
      id="t_1825_0f64fe75_dffe_2516_7b97_4b56fab10983">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000004363Member"
      id="t_1826_f1059a90_b5f0_2996_47d6_1f7a2e9db2bf">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000004363Member"
      id="t_1827_2675ec6a_5f07_b584_6aa3_a2436d266ee7">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000004363Member"
      id="t_1828_e72deb03_3021_f17c_597e_a456b7b55477">(1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000004363Member"
      id="t_1829_0e2d6dbc_9a6c_2a4e_3499_7fea346c5db0"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000004363Member"
      id="t_1830_d55a4ae4_cb78_2c74_beca_0ab7f7ac2f57"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.28pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.28pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.61pt;"&gt;4.42%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.28pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.28pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-6.11%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;June 30, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000004363Member_C000012093Member"
      id="h_1811_5363df99_bff2_4724_8e0c_dfdd41013f63">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1812_de1e386b_16df_4d08_9967_e27a175f1e11"
      unitRef="pure">0.0442</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000004363Member_C000012093Member"
      id="h_1813_05691e76_471c_4d45_ac9b_b2d1688059a1">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000004363Member_C000012093Member"
      id="h_1814_41c403e2_5972_4e9c_94c2_b6d60d6211cd">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1815_d38c5c15_d1aa_41f0_8920_8b2441ac11b6"
      unitRef="pure">-0.0611</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000004363Member_C000012093Member"
      id="h_1816_eea37369_c2ac_47c7_abc6_d49b24a75297">2022-06-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000004363Member"
      id="t_705_c06344e5_cfc9_4ae3_9bbc_96d8e9c48801">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000004363Member_C000012093Member"
      id="t_1851_5cee64e0_226e_ded1_42bc_d8fd24b63e91">2003-12-04</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1817_4a243603_8ecd_4ed2_b0fc_df2480b49cc5"
      unitRef="pure">0.0189</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1818_76ddbe71_4e54_4ec7_b8d4_27a868259a83"
      unitRef="pure">0.0167</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000004363Member_C000012093Member"
      decimals="4"
      id="h_1819_5a1e7059_dcb9_47ec_8d68_088c524de02b"
      unitRef="pure">0.0207</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000004363Member_C000012093Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1820_7c24ade7_05d6_4b93_8f08_f15a4b3dea9b"
      unitRef="pure">0.0085</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000004363Member_C000012093Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1821_74579ec6_cc15_49f9_936c_31204bf54ffb"
      unitRef="pure">0.0026</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000004363Member_C000012093Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1822_4f2e87e4_c602_443e_b18e_ee077083b2e1"
      unitRef="pure">0.0101</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000004363Member_C000012093Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1823_18b7285d_0906_48d3_8b40_abcb052d087b"
      unitRef="pure">0.0111</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000004363Member_C000012093Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1824_42bdcb66_6083_427e_b88e_95c96b9cb98f"
      unitRef="pure">0.0070</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000004363Member_C000012093Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1825_1fd666ff_313b_45d9_9e2a_5e3b9e244c51"
      unitRef="pure">0.0114</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000004363Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1826_e69a9579_bded_492e_b176_3178837056ee"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000004363Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1827_bca1c1f6_c248_43a2_9e61_8bb4d3518214"
      unitRef="pure">-0.0034</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000004363Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1828_9a257e09_4dff_4ef7_9020_bac648375c90"
      unitRef="pure">0.0137</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000004363Member_ICEUSTreasuryInflationLinkedBondIndexMember"
      decimals="4"
      id="h_1829_e4c8c10a_f23b_4b4f_912e_6193351fd7bf"
      unitRef="pure">0.0206</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000004363Member_ICEUSTreasuryInflationLinkedBondIndexMember"
      decimals="4"
      id="h_1830_0dd014ad_fa64_4aa1_937e_e86435cfad95"
      unitRef="pure">0.0185</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000004363Member_ICEUSTreasuryInflationLinkedBondIndexMember"
      decimals="4"
      id="h_1831_928a188b_fdc2_4bbe_b4b5_89b79ca2a992"
      unitRef="pure">0.0223</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000004363Member"
      id="t_1852_33266583_c991_aefc_e241_fadc2187d51c">Index returns through January 31, 2023 reflect the performance of the Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) Index (Series-L). Index returns beginning on February 1, 2023 reflect the performance of the ICE U.S. Treasury Inflation Linked Bond Index, which, effective as of February 1, 2023, replaced the Bloomberg U.S. Treasury Inflation Protected Securities (TIPS) Index (Series-L) as the Underlying Index of the Fund.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000004363Member"
      id="t_1831_96686134_5d90_b1fd_6f06_cc09b71ee3fc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000004363Member"
      id="t_1832_13487a4d_5819_57c5_017d_8384763d5e2b">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000004363Member"
      id="t_1833_2bfab387_6a8e_2034_da39_8ce59d87bdf5">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000004363Member"
      id="t_1834_b4b92816_845c_e81f_d33d_638dec1063cc">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000067560Member"
      id="t_1850_12ef71ec_18b3_7560_4bae_f801dc9b3607"> iSHARES&#xae; iBONDS&#xae; DEC 2025 TERM TREASURY ETF  Ticker: IBTFStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000067560Member"
      id="t_706_d52d5896_9aa6_42e0_ad31_2db0dc08d5cc">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000067560Member"
      id="t_707_90fe0e06_6170_4188_a7c9_54c4a66b0950"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2025 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2025.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000067560Member"
      id="t_708_cddd9260_8d99_4add_984b_53b09dd8c907">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000067560Member"
      id="t_709_7bf5441e_4607_4ae9_b2f7_fc470b4a1fe1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2025. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000067560Member"
      id="t_1852_7b589a32_98a2_c6df_5e28_0b68dbaf4437">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000067560Member"
      id="t_1853_29402910_891f_2aa8_9511_d1631622a368">December 15, 2025</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000067560Member"
      id="t_1851_a5df7063_4799_b6b7_cd84_a84b13602343">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1832_a7b163b1_fc96_4b50_b0d8_ce726ccaffb7"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1833_e09af1fe_fc17_4a2d_b644_a643baa1733f"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1834_bf99d6ce_0032_4516_9a99_2c89bbb16ec0"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1835_136a81c4_4791_44f5_b361_7e1b142df08b"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1836_58941a43_ce0f_49fc_b01c_46dc7b9e61de"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1837_a9e6b855_563c_40d2_81ba_c67d81da27c4"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1838_9f04a873_93a9_4abc_b583_0b34a5f10b21"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000067560Member"
      id="t_1854_61f90cb2_8429_b3e6_eb51_34849bbb5fc4">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000067560Member"
      id="t_1855_e2db90a2_8a06_5116_93c7_f190c9adda93"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2025 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <ist:ExpenseExampleMaturity
      contextRef="S000067560Member_C000217186Member"
      decimals="INF"
      id="h_1839_4f6b76bf_9c79_4f3c_9b28_9888a5576763"
      unitRef="USD">6</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000067560Member"
      id="t_1856_d7e32798_5b33_571e_c4ec_45d60a9db7ce">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000067560Member"
      id="t_1857_fcbd27aa_6aa0_390c_c6fc_4953b7bde17f">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 1% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000067560Member"
      decimals="4"
      id="h_1840_04ae0853_355d_4c35_af3f_1b7cd903c505"
      unitRef="pure">0.01</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000067560Member"
      id="t_711_e7e66c3d_2379_4029_a978_aa7aeef273f6"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000067560Member"
      id="t_712_8f68a87f_7308_4f28_8f6e_a8b30ec5cd26"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2025 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2025 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2025, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund is a term fund that will terminate on or about December &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;15, 2025, at which time it will distribute its remaining net assets &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to shareholders pursuant to a plan of liquidation. The Fund does &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&#160;times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2025, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000067560Member"
      id="t_713_1717d190_4beb_4587_9693_a3a65a56520c"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000067560Member_RiskLoseMoneyMember"
      id="t_1858_18bf2ac8_0293_a9e8_9737_1e6cecc94c68">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_USTreasuryObligationsRiskMember"
      id="t_1872_d9ecb28b_38f9_07ae_4c57_b894e556c31c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_InterestRateRisksMember"
      id="t_1873_8ceb4126_6ca0_dc2a_c959_546c91b0b671">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_MarketRiskMember"
      id="t_1874_28935194_0d82_10c8_386d_f37f4d70fb45">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_IndexRelatedRiskMember"
      id="t_1875_a5775214_d8b1_c3f2_fe42_5ae69e278e2e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_AssetClassRiskMember"
      id="t_1876_3e2983dd_2e77_6997_f0fd_f9d3879cb0ee">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1877_2c97538e_1943_e099_bce5_0b14737baab3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_CashManagementRiskMember"
      id="t_1878_663cdbc6_4be7_874d_40f4_ac33ef5b987b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cash Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;If a significant amount of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets is invested in cash and cash equivalents, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;underperform other funds that do not similarly invest in cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents for investment purposes and/or to collateralize &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;derivative instruments.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_ConcentrationRiskMember"
      id="t_1879_46052bd6_39af_a58e_9aaf_265a4b2389d0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_CybersecurityRiskMember"
      id="t_1880_13008ef3_348e_bd57_9def_e9e9ca173268">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_DecliningYieldRiskMember"
      id="t_1881_0777f8ce_d32f_27c5_a9b0_4a480520c2a5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_IncomeRiskMember"
      id="t_1882_e731c4d2_0190_1aa3_e3e1_d8c90e808668">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_IssuerRiskMember"
      id="t_1883_0f142750_51a8_1554_fc36_8c318af8caf1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_ManagementRiskMember"
      id="t_1884_bdf77dac_7f6f_d2a0_077f_6040092935e4">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_MarketTradingRiskMember"
      id="t_1885_83b17072_97f7_866b_90b4_08f1eaf25c70">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_OperationalRiskMember"
      id="t_1886_db73f98e_8faa_06f6_b63b_76bb844d8c40">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_RiskOfInvestingInTheUSMember"
      id="t_1887_05729da7_4fa4_0a36_3d5d_65979a812923">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067560Member_SecuritiesLendingRiskMember"
      id="t_1888_1e420423_3bf0_46f3_efc8_7b5adc048e81">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067560Member_TrackingErrorRiskMember"
      id="t_1889_853b32f0_cf22_1e66_ee9e_af9e75ece400">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000067560Member"
      id="t_714_f172dd70_ea08_43a3_af65_e01d9a324a53"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000067560Member"
      id="t_1859_893ec379_9af7_2998_74ba_f283fc2eaf25"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000067560Member"
      id="t_1860_e9efcc7b_cad7_23d1_fc67_23506d2c5db3">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000067560Member"
      id="t_1861_45006ff6_ac5d_7f6a_3a2d_6d6c0038ca58">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000067560Member"
      id="t_1862_7e8c5dbe_2c68_b501_7d6f_ea790632c676">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000067560Member"
      id="t_1863_67b9e73d_7e3a_e87a_59ba_9f213301e6db">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000067560Member"
      id="t_1864_246a0c26_615b_2066_0427_4e780f0e7be2"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000067560Member"
      id="t_1865_623ee58c_f349_a2cc_8de2_3ad4cb5b3e9e"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.03pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.03pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 0.37pt;"&gt;2.25%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 23.03pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 23.03pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.17%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000067560Member_C000217186Member"
      id="h_1844_ae561ebd_40b2_472a_a1b2_b2b97e8bebe1">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1845_41b19392_b878_4727_99af_a85834c85dd8"
      unitRef="pure">0.0225</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000067560Member_C000217186Member"
      id="h_1846_3b89bbd4_bf3d_48a0_95b7_cf66f51a2ceb">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000067560Member_C000217186Member"
      id="h_1847_fbe19932_3ec3_461e_81a3_16ff5b5ab804">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1848_6e7d2a1c_62f1_4fb9_a542_c2821e35da25"
      unitRef="pure">-0.0417</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000067560Member_C000217186Member"
      id="h_1849_e2384daf_891d_4543_a0d3_acb651d7e221">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000067560Member"
      id="t_716_af19297d_4319_4a04_8c38_248b1ae4b339">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000067560Member_C000217186Member"
      id="t_1866_65ba0a79_08da_ef8d_0fcd_8a05b3c9cc6f">2020-02-25</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1850_07f1d1b3_c58e_4f18_a613_775b612d2abe"
      unitRef="pure">0.0461</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067560Member_C000217186Member"
      decimals="4"
      id="h_1851_27fa3067_f4c8_4452_afd0_41305e28af40"
      unitRef="pure">0.0084</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067560Member_C000217186Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1852_9cea6478_48bc_4825_9559_cc9413a04a02"
      unitRef="pure">0.0278</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067560Member_C000217186Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1853_684e26f9_73c5_4b2f_a54e_a18cef4125fa"
      unitRef="pure">-0.0012</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067560Member_C000217186Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1854_c64a92e8_1cb8_4fd4_aecc_e0bf3a353062"
      unitRef="pure">0.0270</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067560Member_C000217186Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1855_8ee996ec_3c7e_45a5_b00f_1eacc1954c39"
      unitRef="pure">0.0023</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067560Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1856_cddcf997_a4b8_499d_8ace_534fc8740a15"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067560Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1857_5ef7fab3_a83a_4302_80cc_b5ae49de189e"
      unitRef="pure">-0.0099</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067560Member_ICE2025MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1858_12d4afeb_8644_466e_adbb_3b815774ef6c"
      unitRef="pure">0.0466</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067560Member_ICE2025MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1859_675220a4_31a2_4f10_8764_665622306137"
      unitRef="pure">0.0088</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000067560Member"
      id="t_1867_c5bf16c9_996e_4ea9_f903_1b7e4d2e9640">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2025 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2025 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2025 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000067560Member"
      id="t_1868_756cced7_c9c2_47f1_8126_db8dc853a4b1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000067560Member"
      id="t_1869_613b1805_eb64_637b_0da9_2b96128c74c1">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000067560Member"
      id="t_1870_ed2b3c1e_e495_c505_c001_0f370a8334c4">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000067560Member"
      id="t_1871_8d851afc_b7df_1210_03aa_c0337ce805fd">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000067561Member"
      id="t_1879_c7dde914_0545_e03d_da36_9fc1b06b41a6"> iSHARES&#xae; iBONDS&#xae; DEC 2026 TERM TREASURY ETF  Ticker: IBTGStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000067561Member"
      id="t_717_0320b238_a357_4e7e_bb97_ace36eb1a118">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000067561Member"
      id="t_718_e73c47a2_0b61_4866_b3cc_3bcc9ca345d1"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2026 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2026.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000067561Member"
      id="t_719_cf0086d2_b1fa_4279_9c3a_1b93270188a2">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000067561Member"
      id="t_720_c58f6af6_3fe1_4de2_9b81_fd67e018d9f7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2026. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000067561Member"
      id="t_1880_107cce67_2002_3c8e_1479_39c081398b49">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000067561Member"
      id="t_1882_cb023961_be00_57fd_78c1_07b8e822fc06">December 15, 2026</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000067561Member"
      id="t_1881_ddfda006_244b_79f1_0ba5_9b7d893a3bc8">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1860_835753d3_8a78_4803_b63e_abeb5275a9f9"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1861_809799c5_82c3_4d38_a24a_34cc0127f8ed"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1862_303670ea_8c72_4514_acd1_d7e7850a8a72"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1863_9d3b1d93_cad2_4296_a358_ef054997cf2d"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1864_800abee4_17e2_411e_87a9_a787bc57a394"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1865_440434e1_ff5f_4e87_8cb7_1a873df59698"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1866_5c63fba9_2276_43f8_b230_40a844c4df3b"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000067561Member"
      id="t_1883_d3521d75_d93a_544f_ed22_78c8684fdb99">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000067561Member"
      id="t_1884_851f59c4_4fb1_1570_8b39_a5db20c22ee7"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2026 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000067561Member_C000217187Member"
      decimals="INF"
      id="h_1867_337de63b_fda0_4369_a87c_35d8e464c61d"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000067561Member_C000217187Member"
      decimals="INF"
      id="h_1868_24bf2e4d_aa1e_4118_8b12_f88ce88c87e6"
      unitRef="USD">13</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000067561Member"
      id="t_1885_1fedada7_1951_a4a4_0579_eea30a0ebf79">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000067561Member"
      id="t_1886_44c91ae9_1d33_a64c_0ee3_28d4ecc8e826">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 16% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000067561Member"
      decimals="4"
      id="h_1869_ede7519b_01d9_4fa6_a21e_4c51e9de08b9"
      unitRef="pure">0.16</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000067561Member"
      id="t_722_e9704904_1326_484f_a280_c59235082362"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000067561Member"
      id="t_723_fc6c6341_4a8a_40a8_bd93_4834b3a65840"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2026 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;).&#160;The Underlying Index consists of publicly-issued U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury securities that are scheduled to mature between January &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;1, 2026 and December 15, 2026, inclusive. The Fund may also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;invest in short-term paper, cash and cash equivalents, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares of money market funds advised by BFA or its affiliates. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund is a term fund that will terminate on or about December 15, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;2026, at which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2026, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000067561Member"
      id="t_724_3277195e_ec96_4bb7_9613_9c29ce683d56"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000067561Member_RiskLoseMoneyMember"
      id="t_1887_0d1037d3_4e52_a75c_d838_b49d305d74ab">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_USTreasuryObligationsRiskMember"
      id="t_1901_c1ef9a25_2e4f_9ba4_a727_603afc6a626a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_InterestRateRisksMember"
      id="t_1902_193def9b_0224_02ed_e806_7bc077893630">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_MarketRiskMember"
      id="t_1903_7ea907e4_2041_ff3c_e669_92b72da78ee6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_IndexRelatedRiskMember"
      id="t_1904_162eb1e8_e747_9b1b_67b9_cc088e1d781f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_AssetClassRiskMember"
      id="t_1905_5ec72c06_9e38_54ca_1684_f78f9aa50a4a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1906_e4ecb3ee_5eec_ae7d_64ad_78da97f6aceb">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_ConcentrationRiskMember"
      id="t_1907_722cb04e_21f6_4e6e_6a26_318bcdf2499c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_CybersecurityRiskMember"
      id="t_1908_d4259e10_75ab_164b_dd76_98da6f0d3bc3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_DecliningYieldRiskMember"
      id="t_1909_75cda99d_3f61_71d4_1f9b_4bda87ed40a1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_IncomeRiskMember"
      id="t_1910_cafb09b9_8cd3_1896_ffe0_f550045b619e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_IssuerRiskMember"
      id="t_1911_c5a6551a_2d92_d509_808e_a457ddee971a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_ManagementRiskMember"
      id="t_1912_d38ae81c_19a9_474b_8a42_1b9ad569394e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_MarketTradingRiskMember"
      id="t_1913_96be0e22_5a56_8e19_1aa3_04708d0c0501">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_OperationalRiskMember"
      id="t_1914_84fcd87d_f525_1474_826a_2e885e57d01e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_RiskOfInvestingInTheUSMember"
      id="t_1915_335e4ca8_1342_e13f_70ef_bdd32862dc70">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_SecuritiesLendingRiskMember"
      id="t_1916_a36c1f6c_f25c_d96e_c153_f3f835472fc8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067561Member_TrackingErrorRiskMember"
      id="t_1917_33f1b73c_3d42_5cdc_253d_af6dea8404b5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000067561Member"
      id="t_725_f0668aa3_3be2_4cec_97a2_60408c219ded"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000067561Member"
      id="t_1888_cf3bf43d_e180_39d9_eed4_c745475c5528"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000067561Member"
      id="t_1889_eea9ad3a_fd52_6ff0_506c_d3c28c1b5408">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000067561Member"
      id="t_1890_f6b2da69_1aba_e3a8_fe80_c6c944e58a07">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000067561Member"
      id="t_1891_36477d00_1911_0327_7207_b6b74921d974">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000067561Member"
      id="t_1892_3f952475_86eb_eeba_525d_2fb5ed1245cc">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000067561Member"
      id="t_1893_bbe2d17b_80d5_94f6_943f_0941d60a3d80"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000067561Member"
      id="t_1894_550b25e5_209c_952c_dfa8_4140e2ef7d25"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.33pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.33pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 1.96pt;"&gt;2.97%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.33pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.33pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.81%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000067561Member_C000217187Member"
      id="h_1873_1ef6ad66_dcd4_4006_9b88_424f0fa1cb33">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1874_46806a6d_0bc7_4d0d_a6b9_04022e60f006"
      unitRef="pure">0.0297</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000067561Member_C000217187Member"
      id="h_1875_d3b83b3d_535e_498c_9d42_8947c96cb073">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000067561Member_C000217187Member"
      id="h_1876_f8ea8ae4_d4d0_414a_918e_2b9cee66cf64">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1877_b08d52da_5c42_48b4_8c9d_1b94278e6f8a"
      unitRef="pure">-0.0481</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000067561Member_C000217187Member"
      id="h_1878_c68e1b3e_2d37_45b6_abef_4e515b01b5ab">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000067561Member"
      id="t_727_347f3d99_95b3_43bc_bd78_20a46adbf4c5">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000067561Member_C000217187Member"
      id="t_1895_4f43517d_84ee_e872_b5b0_377cf8823815">2020-02-25</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1879_a076b5c4_ac9a_4ef6_80b7_d8745ab203af"
      unitRef="pure">0.0389</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067561Member_C000217187Member"
      decimals="4"
      id="h_1880_d9fdea1a_58e3_4074_b5d2_a050bcdc367e"
      unitRef="pure">0.0031</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067561Member_C000217187Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1881_5f7df724_3988_4ded_959c_943f904b768c"
      unitRef="pure">0.0217</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067561Member_C000217187Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1882_e79947c6_34ca_4754_938a_852c609602a9"
      unitRef="pure">-0.0060</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067561Member_C000217187Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1883_14212287_a962_4a7c_b24d_b632e125911b"
      unitRef="pure">0.0228</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067561Member_C000217187Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1884_63a3af8d_c319_4e3a_bebb_00a13ff727f8"
      unitRef="pure">-0.0015</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067561Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1885_f9e84a13_e114_487a_870b_662d5489e07d"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067561Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1886_b6465ead_fc8b_4cfd_a1d9_7453c947515b"
      unitRef="pure">-0.0099</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067561Member_ICE2026MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1887_334daae0_ff68_458f_bba8_e3c4de712e37"
      unitRef="pure">0.0395</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067561Member_ICE2026MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1888_2affa2d7_2f26_4d08_8a0b_0b84b306171d"
      unitRef="pure">0.0034</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000067561Member"
      id="t_1896_b00ccfe2_3ec7_8316_3c8a_8583464aa7ad">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2026 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2026 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2026 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000067561Member"
      id="t_1897_8f8e804a_c1bb_09b3_8e4f_d395cf488e4c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000067561Member"
      id="t_1898_5ff93dfe_d0aa_1197_0a68_cf27931e738f">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000067561Member"
      id="t_1899_844ef239_2c4c_0356_dce3_50bd688bc729">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000067561Member"
      id="t_1900_437aa6c9_2717_c65a_4356_48e445b8cc6c">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000067562Member"
      id="t_1908_988a6031_a47b_1bb2_e948_5402b3fb1797"> iSHARES&#xae; iBONDS&#xae; DEC 2027 TERM TREASURY ETF  Ticker: IBTHStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000067562Member"
      id="t_728_68882e36_baf2_4da6_8d9a_ab99a2cebd8c">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000067562Member"
      id="t_729_579852a8_973d_406f_b2c5_93bcb7285c0c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2027 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2027.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000067562Member"
      id="t_730_564e07ef_73f0_45ff_9339_8745aafd61c4">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000067562Member"
      id="t_731_2028040b_65c7_4bcd_b09a_36b10a73ef48"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2027. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000067562Member"
      id="t_1909_0bdf7817_2bf1_9eee_ee2b_9a0a70e7dac7">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000067562Member"
      id="t_1910_cc0ad63a_a3ea_50a2_6268_6b7eb0e9ffc0">December 15, 2027</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000067562Member"
      id="t_1911_de6d36a5_fe59_2816_5992_ad49bccabd2c">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1889_293bc0e4_3955_487d_b940_32f9e6b1beff"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1890_78899eea_eb27_4d75_a747_4aa2d415547a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1891_4f2224da_987b_48be_b41e_074ce5476662"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1892_a9162d84_2e25_40cb_8339_958459495cd3"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1893_228d63ca_3218_4a70_a4ac_120cd4a73508"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1894_324a6aff_07b7_4ae7_b2e8_3dd9702cbb43"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1895_7cc58542_8787_4bb3_b0ec_0d997d678ad1"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000067562Member"
      id="t_1912_183fe9ef_5178_dd60_4838_689318985b07">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000067562Member"
      id="t_1913_d39a4ca9_1047_8914_20ea_5c0b1d965d97"> This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2027 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000067562Member_C000217188Member"
      decimals="INF"
      id="h_1896_30e90be5_81d9_41bd_8407_e6035e5e308e"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <ist:ExpenseExampleMaturity
      contextRef="S000067562Member_C000217188Member"
      decimals="INF"
      id="h_1897_3f6cd133_7774_44d7_82c9_72255d417a2a"
      unitRef="USD">21</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000067562Member"
      id="t_1914_646f7928_b277_6a0a_5d21_d086582a45d2">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000067562Member"
      id="t_1915_a79dddbd_3ccf_0943_b6b3_900a557ea391">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 22% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000067562Member"
      decimals="4"
      id="h_1898_1e93bea1_217c_489e_882e_57d9923176dd"
      unitRef="pure">0.22</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000067562Member"
      id="t_733_5f7c4c60_d62d_4bff_b165_4c548b531196"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000067562Member"
      id="t_734_9d5bd962_e67a_4c76_a819_94825ca14159"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2027 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2027 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2027, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2027, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2027, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000067562Member"
      id="t_735_192a4a2d_a5cf_4560_8267_a2a5f940eccd"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000067562Member_RiskLoseMoneyMember"
      id="t_1916_7910e221_58d1_3344_5833_c545603676f7">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_USTreasuryObligationsRiskMember"
      id="t_1930_74cbf762_cd05_d13d_6ead_082c0c9a15f8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_InterestRateRisksMember"
      id="t_1931_dcacd4ab_146e_727d_c2d0_22c95b210d7f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_MarketRiskMember"
      id="t_1932_4159ffd0_edcf_9edb_1a64_3f966640fc84"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_IndexRelatedRiskMember"
      id="t_1933_34df482a_e8a3_00e9_11b9_7070de99ee3e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_AssetClassRiskMember"
      id="t_1934_80d3d6bb_f46a_0ddf_1b70_d6641c633b72"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1935_9f1bf672_34b2_e5d4_e0f4_622be0a6b5e3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_ConcentrationRiskMember"
      id="t_1936_51809735_e75e_1fe7_1abb_6257f61e6e86"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_CybersecurityRiskMember"
      id="t_1937_a8c4a877_2513_6bc1_342a_da24c4c16046"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_DecliningYieldRiskMember"
      id="t_1938_daa9a1f0_52dc_e70f_7fa8_9a327efdf5b8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_IncomeRiskMember"
      id="t_1939_1ce70972_09b8_7105_6084_fccfaf8bf970"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_IssuerRiskMember"
      id="t_1940_57965a57_9739_89fa_f81b_a7b295cf9195"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_ManagementRiskMember"
      id="t_1941_b1abf21c_d05d_6c5a_a956_f7eeecca6466"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_MarketTradingRiskMember"
      id="t_1942_4ab98ac8_aecf_3141_e41d_45d603103812"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_OperationalRiskMember"
      id="t_1943_8f8dfc55_44cc_887d_5146_a4de3524b9f6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_RiskOfInvestingInTheUSMember"
      id="t_1944_3dd4f8ce_7bcf_9ef4_034c_c1b202befd88"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_SecuritiesLendingRiskMember"
      id="t_1945_deed8729_337d_57a8_3d78_d5358976f6ba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067562Member_TrackingErrorRiskMember"
      id="t_1946_c654c897_ce96_8726_2ae4_dfc5d0d97424"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000067562Member"
      id="t_736_b28ff87e_5a11_4efa_a6b8_1d65f9ec4fe3"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000067562Member"
      id="t_1947_1a2d22a3_321e_062c_0f17_713eff3a35f8">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000067562Member"
      id="t_1948_446e20de_1af3_222a_e779_0d37a05bb4df">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&#x2009;and the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000067562Member"
      id="t_1949_b3444337_30b6_0423_249c_d7ba13e49aa4">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000067562Member"
      id="t_1920_5230f84c_4d9b_e253_4dda_cf772613caac">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000067562Member"
      id="t_1921_9261060e_a5c9_64e7_ae24_44c5a7126cdd">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000067562Member"
      id="t_1922_1604a4e3_61be_f120_3796_86a7427d27f2"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000067562Member"
      id="t_1923_9139925a_a128_087d_e945_8b6d5260a9ed"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;3.73%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.25%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000067562Member_C000217188Member"
      id="h_1902_1bbbb537_a6a2_4f75_9c0e_746f4a753655">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1903_5f43a0ed_ab86_4f2f_b551_a85c78dc6924"
      unitRef="pure">0.0373</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000067562Member_C000217188Member"
      id="h_1904_c00716d7_27cd_4d2f_bcc2_ed9b657242e3">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000067562Member_C000217188Member"
      id="h_1905_2b1a3d59_6a67_42a7_9631_806d33921d71">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1906_ff93bbc3_ab4f_4be9_9776_e9542098ecff"
      unitRef="pure">-0.0525</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000067562Member_C000217188Member"
      id="h_1907_0475860a_bc56_4c19_9daf_89cfabe5c3b6">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000067562Member"
      id="t_738_d0cadff9_c4d1_41b5_af60_571727ce32a1">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000067562Member_C000217188Member"
      id="t_1924_399f8280_f665_411f_d95b_90e183640ade">2020-02-25</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1908_ac56c3ac_1b10_4ed4_9739_aeb51d2e2d34"
      unitRef="pure">0.0319</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067562Member_C000217188Member"
      decimals="4"
      id="h_1909_59ba3919_2174_46b8_843b_a43877fb03dd"
      unitRef="pure">-0.0028</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067562Member_C000217188Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1910_4ccd56e1_1a6e_4a47_a356_7b9bda7ef721"
      unitRef="pure">0.0150</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067562Member_C000217188Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1911_f7ef0bea_87ba_4026_8ca7_83cabbb74630"
      unitRef="pure">-0.0118</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067562Member_C000217188Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1912_ec1a98d5_6f01_4343_8386_e2eed3bd23c2"
      unitRef="pure">0.0187</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067562Member_C000217188Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1913_c4b67369_ddf7_494a_9032_87dd27d32eec"
      unitRef="pure">-0.0059</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067562Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1914_e79aac17_a47b_4fe0_a81c_8fa3621f9012"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067562Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1915_295ab519_bb57_40ca_a98f_1376538bf781"
      unitRef="pure">-0.0099</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067562Member_ICE2027MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1916_7aa52e6c_81bd_4c15_b572_85ae2c2afb4a"
      unitRef="pure">0.0324</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067562Member_ICE2027MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1917_b9505e2e_f6c0_4092_85e5_237149552f0f"
      unitRef="pure">-0.0023</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000067562Member"
      id="t_1925_0d20ac3b_c47a_2e13_e543_dd8153409d2d">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2027 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2027 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2027 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000067562Member"
      id="t_1926_3e3365b5_a007_007d_fe30_c76b54abcab5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000067562Member"
      id="t_1927_a87bceb2_038e_6c43_cd0e_6a4efaf352bf">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000067562Member"
      id="t_1928_2cbda136_26f5_1484_25f7_b2fd0aa1af1a">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000067562Member"
      id="t_1929_a52bc4dd_6666_e2f1_07ad_cdc0769bb36b">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000067563Member"
      id="t_1938_329f67bf_b248_7d7b_5fd5_c19760dde508"> iSHARES&#xae; iBONDS&#xae; DEC 2028 TERM TREASURY ETF  Ticker: IBTIStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000067563Member"
      id="t_739_b6b2044e_1123_4a6e_b17f_591d6251b26a">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000067563Member"
      id="t_740_daf39d5f_9007_4579_a422_234e64f542a5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2028 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2028.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000067563Member"
      id="t_741_c7fe6349_08d5_47cd_a30f_80f6f9f3de86">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000067563Member"
      id="t_742_22fc8b30_9c7e_44a1_8816_fd1ba68026cb"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2028. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000067563Member"
      id="t_1939_1c403024_7044_c17f_348f_d2f5e6f9e81e">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000067563Member"
      id="t_1963_3879961c_d969_71a9_ecf5_743cf7f28c1d">December 15, 2028</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000067563Member"
      id="t_1940_61d39ef5_d06c_2d2e_9472_f182ebd86cde">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1918_79982e65_a21c_4d53_9099_56e9759adcee"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1919_7f376ce3_17f3_4b3a_bfad_c3958be400b7"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1920_defd362d_508e_415a_9f85_d0818e9f9487"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1921_8fafb676_3c9f_4523_88d4_a641466eb479"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1922_cccbacf3_7dba_45c0_9d7f_65ea7c7a68a4"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1923_f0b266fe_2266_4935_8ae8_8c262b379f50"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1924_447314ff_55fe_4a30_aa10_20fe73b2e646"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000067563Member"
      id="t_1941_15a8c5e4_c7fb_d841_451b_18337a7ab444">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000067563Member"
      id="t_1942_36e8e57a_d81a_4b3c_a77f_be8ea912fa1d">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2028 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000067563Member_C000217189Member"
      decimals="INF"
      id="h_1925_6f57e9c3_d73b_4503_aed2_6c252c95144e"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000067563Member_C000217189Member"
      decimals="INF"
      id="h_1926_c9c776c3_2249_484a_a5f5_38737ea8298b"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000067563Member_C000217189Member"
      decimals="INF"
      id="h_1927_83b3f41a_2bb6_42f2_9f43_b39bda7776df"
      unitRef="USD">29</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000067563Member"
      id="t_1943_94542071_b401_895e_3f0d_fad6aca60837">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000067563Member"
      id="t_1944_00b4ff75_01cd_5ca0_f32a_7ae3306a6b1a">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 4% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000067563Member"
      decimals="4"
      id="h_1928_d7a70631_8e4b_4578_b137_8172cd851448"
      unitRef="pure">0.04</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000067563Member"
      id="t_744_dbc98023_7ff6_4a75_bd70_97f6b18f8ce8"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000067563Member"
      id="t_1945_d2b65fa4_9a03_9b9a_9838_e37a243beb0b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2028 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2028 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2028, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2028, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2028, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000067563Member"
      id="t_746_96062cb1_59d5_4f92_8699_d8c42c50876f"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000067563Member_RiskLoseMoneyMember"
      id="t_1946_2bdbe5dd_18cc_0629_59f2_412d96c52779">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_USTreasuryObligationsRiskMember"
      id="t_1964_289cfc11_0ee3_57d5_92ee_6a24d02d0cec"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_InterestRateRisksMember"
      id="t_1965_d766e4bf_c935_dfaf_326f_200650985f77"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_MarketRiskMember"
      id="t_1966_8f179af6_cc5b_fdaa_5b39_972cd911cf34"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_IndexRelatedRiskMember"
      id="t_1967_ccee5d69_6d1f_8cf9_1f38_50efb65e7c8a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_AssetClassRiskMember"
      id="t_1968_2cdee497_0827_cb5e_a9fb_5a9f6f3f33f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1969_1fb56a49_f55e_e11b_6912_0dda5b3f89e9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_ConcentrationRiskMember"
      id="t_1970_9206afa4_b50e_11f5_7e33_0695b0b53596"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_CybersecurityRiskMember"
      id="t_1971_dfa2b2e7_edcb_175c_4b3b_ae4b61b75357"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_DecliningYieldRiskMember"
      id="t_1972_f4501caa_fcfe_e4cd_7265_7f5f660b621b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_IncomeRiskMember"
      id="t_1973_37ba78f9_1357_31e1_76ed_26f6998d83e4"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_IssuerRiskMember"
      id="t_1974_0adf66d8_2c97_af75_f919_b775cba0f654"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_ManagementRiskMember"
      id="t_1975_ba61793c_ff85_0f58_2bd8_129f5d526c1d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_MarketTradingRiskMember"
      id="t_1976_ed6448cb_35ce_3318_abd1_bea7b2d4acb1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_OperationalRiskMember"
      id="t_1977_7059405c_6d3a_6fcc_8b9e_2c6f039fbce8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_RiskOfInvestingInTheUSMember"
      id="t_1978_5a707a40_6246_2a21_8440_41f0ecd410b1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_SecuritiesLendingRiskMember"
      id="t_1979_6b9e536f_ec05_fdd0_c327_95b959c5c96b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067563Member_TrackingErrorRiskMember"
      id="t_1980_322fcebb_e35f_feb1_af09_32de71cf29ba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000067563Member"
      id="t_1982_1c371c11_f9d8_06b8_6233_06e08c8e0851">Performance Information</rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000067563Member"
      id="t_1947_411cb9e1_66d6_9fc0_3d01_fabfeb4f39a4"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000067563Member"
      id="t_1948_93322f55_2594_3a75_421f_005160f4966d">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000067563Member"
      id="t_1949_ce5375f6_b1ba_43f4_f324_2383fd60dd72">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000067563Member"
      id="t_1950_aa6eb837_a7ca_87b2_6a91_b737607f3396">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000067563Member"
      id="t_1951_4b012aee_0299_e751_d2bd_f4bf367795b0">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000067563Member"
      id="t_1953_cecd9813_0478_0e39_b3ca_98cc00848d97"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000067563Member"
      id="t_1952_f8e92a21_7762_e17a_1d1d_6e6ad2fb776c"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.29pt;"&gt;4.35%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.63%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000067563Member_C000217189Member"
      id="h_1932_d72548c5_1610_4386_b944_842e4d3a2ca3">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1933_32098761_abae_47e1_a31c_706e2da1a9e8"
      unitRef="pure">0.0435</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000067563Member_C000217189Member"
      id="h_1934_8c8be128_91e0_4169_a5f9_0573ca9c2fd6">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000067563Member_C000217189Member"
      id="h_1935_4f32e60d_eb18_491d_b38b_77ab70ab8cba">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1936_746c2d7c_07f4_4081_817d_21c9a04a0e6e"
      unitRef="pure">-0.0563</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000067563Member_C000217189Member"
      id="h_1937_03256b4d_4f80_4952_8f2b_542ab3f226e0">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000067563Member"
      id="t_749_baa89f07_2ec5_4b52_9cc5_718264ec7be7">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000067563Member_C000217189Member"
      id="t_1958_23a74432_0caf_1ea2_650a_7224d78029b7">2020-02-25</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1938_943ae1e4_b443_400e_9f50_d369f10242a4"
      unitRef="pure">0.0246</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067563Member_C000217189Member"
      decimals="4"
      id="h_1939_ffb5c311_e2ab_43d6_a09b_109eb9f9d1e6"
      unitRef="pure">-0.0075</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067563Member_C000217189Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1940_a4d833f8_0462_44c7_934e_35047b1326b9"
      unitRef="pure">0.0084</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067563Member_C000217189Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1941_832c0b34_72ec_4bbe_b5bb_1be198150c38"
      unitRef="pure">-0.0160</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067563Member_C000217189Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1942_b2a9b433_beeb_4a6a_a047_974abb0484df"
      unitRef="pure">0.0144</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067563Member_C000217189Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1943_2ca2ef72_5c65_459d_9dba_4dd136d234a3"
      unitRef="pure">-0.0092</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067563Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1944_8f6a855e_dfdf_4e05_a8d9_ffcd0e487f67"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067563Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1945_2d7670c3_27c5_41a7_9ec3_a1ec07ba9d44"
      unitRef="pure">-0.0099</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067563Member_ICE2028MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1946_7efde757_d4a0_4678_b9d0_f8afccb059cb"
      unitRef="pure">0.0250</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067563Member_ICE2028MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1947_be783211_c360_40ff_b520_f763240098d5"
      unitRef="pure">-0.0071</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000067563Member"
      id="t_1983_36b018a1_2991_625e_9334_1152142e5a5e">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2028 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2028 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2028 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000067563Member"
      id="t_1954_e4341f17_1cd9_9560_2620_36c5facf2eef"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000067563Member"
      id="t_1955_bd350df3_4131_30f2_307d_476f9815e1d5">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000067563Member"
      id="t_1956_321cb3ab_1061_1a3c_f39e_e1f7a04a83bd">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000067563Member"
      id="t_1957_58af7655_bfff_b01c_e263_b05a7bd1b808">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000067564Member"
      id="t_1968_09465d84_dc76_51d6_9c55_106604685c07"> iSHARES&#xae; iBONDS&#xae; DEC 2029 TERM TREASURY ETF  Ticker: IBTJStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000067564Member"
      id="t_750_6d8dc46c_e123_4935_8ddb_cb192027865f">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000067564Member"
      id="t_751_de289977_d7cd_4d73_830e_1e6044a4ffa3"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2029 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2029.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000067564Member"
      id="t_752_ebbf2133_0c2a_475e_a2b2_9a753006d3e1">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000067564Member"
      id="t_753_30e00ada_4883_4ded_959a_ccb28d43a78a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2029. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000067564Member"
      id="t_1975_83a79611_df77_02c2_2a9e_9a19227ce655">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000067564Member"
      id="t_1976_b8e23cd0_2c0c_ce70_fdcf_24a123ddbb22">December 15, 2029</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000067564Member"
      id="t_1969_bcc383d1_af0a_eee0_59dd_dc110498245f">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1948_a11cc3fa_5204_492b_8ff1_8328fa7149f8"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1949_b8a5d854_f37b_4e27_a590_b5d5936b0dda"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1950_c7c24de1_d1cc_47d4_b058_d29d119f9eee"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1951_5149265a_ac77_47df_90c4_3314686c9791"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1952_ab0d37a9_7f5d_40a6_8d7f_5cfbcff506e6"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1953_ac949669_2ddd_4027_86b5_79c43637bc22"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1954_89defd41_3d09_441b_9f5f_6e593d04462e"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000067564Member"
      id="t_1970_1fe31962_eeda_909f_2a9b_bbb0e5d98260">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000067564Member"
      id="t_1971_b27adff5_c6c8_cd59_0568_cafe7659e542">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2029 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000067564Member_C000217190Member"
      decimals="INF"
      id="h_1955_0cb95e5a_ea19_47d3_a4c7_07f4913bab8d"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000067564Member_C000217190Member"
      decimals="INF"
      id="h_1956_331fb04b_a929_4fe4_bbbf_0be3603e8337"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <ist:ExpenseExampleMaturity
      contextRef="S000067564Member_C000217190Member"
      decimals="INF"
      id="h_1957_43d02a88_f0b6_43b5_bb58_9553f50929e5"
      unitRef="USD">38</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000067564Member"
      id="t_1972_3d071b88_9386_b36b_add0_e5845ae48c88">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000067564Member"
      id="t_1973_912d61b1_3c3e_7e74_83e1_af35f282260a">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 35% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000067564Member"
      decimals="4"
      id="h_1958_de1b3ba5_839f_4118_bcc5_ac78dfb9d254"
      unitRef="pure">0.35</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000067564Member"
      id="t_755_3434c262_90d5_4ddf_98c7_88c55efb96c4"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000067564Member"
      id="t_756_916821d4_95a9_4270_bd2e_4c399d720657"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2029 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2029 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2029, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2029, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2029, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000067564Member"
      id="t_757_0e491219_2c1e_424c_92d7_9cb80be30be5"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000067564Member_RiskLoseMoneyMember"
      id="t_1974_90319085_4735_3fdc_4629_2e3542835b13">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_USTreasuryObligationsRiskMember"
      id="t_1994_97b77468_e97b_65a3_9e69_65a835e0f219">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_InterestRateRisksMember"
      id="t_1995_1376532c_f3df_de21_3c6a_9cabd075436e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_MarketRiskMember"
      id="t_1996_55c6f45e_b443_7551_7aa0_4ba310e017e6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_IndexRelatedRiskMember"
      id="t_1997_502e324c_f97e_9bc1_cd64_8cd3c2a0ac62">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_AssetClassRiskMember"
      id="t_1998_9345f7b8_266c_7ba6_a227_351d4ec03a23">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_1999_7c34f1c0_ab00_bf26_d2cc_1122c19191e6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_ConcentrationRiskMember"
      id="t_2000_e6a25593_b5dc_ca35_c1bb_897a09c2a8c8">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_CybersecurityRiskMember"
      id="t_2001_acff1449_b301_3414_c23d_97a477851e2c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_DecliningYieldRiskMember"
      id="t_2002_b4dcae61_f3b7_69e5_2a70_3cb264570d02">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_IncomeRiskMember"
      id="t_2003_d3044641_775f_5ade_4c48_13fa65f2b3d1">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_IssuerRiskMember"
      id="t_2004_d53eafc1_f990_0920_f20d_bfbc6f68b0e3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_ManagementRiskMember"
      id="t_2005_ca04a09d_8d48_78e1_7255_ef4cf962c2f7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_MarketTradingRiskMember"
      id="t_2006_101326c3_427b_71e1_3280_c5f7f50a5a52">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000067564Member_OperationalRiskMember"
      id="t_2007_05df2766_5bb4_e7fa_838a_034366669a78">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_RiskOfInvestingInTheUSMember"
      id="t_2008_92a12b22_c33f_4593_f3e2_3cbae5c70a80">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_SecuritiesLendingRiskMember"
      id="t_2009_673484ce_513e_2067_bff8_c4a88d34c2ec">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000067564Member_TrackingErrorRiskMember"
      id="t_2010_74db0e5c_ae17_9d94_32f7_b1586b271c71">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000067564Member"
      id="t_758_7f64558e_e8e7_4bad_894a_a1d95dea6de3"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000067564Member"
      id="t_1977_9c3421b3_ec0b_99a7_dfa7_85d960e64023">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000067564Member"
      id="t_1978_6bcb9b9e_203b_9ea6_43f2_8e3f4ed2b0b4">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000067564Member"
      id="t_1979_763cfd29_dfec_b592_cee8_c27d75940acf">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000067564Member"
      id="t_1980_ec6bc52d_963e_fae2_564d_9ff409c6ce90">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000067564Member"
      id="t_1981_722ac2d5_eb0d_c983_3a45_40d8af6f3824">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000067564Member"
      id="t_1983_970cbc8c_294c_792e_bb09_17bfb8da8815">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000067564Member"
      id="t_1982_9319ee08_8042_645f_4da2_56b92b1e64cf">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.58pt;"&gt;4.97%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.93%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000067564Member_C000217190Member"
      id="h_1962_f35040a5_3e7f_4b66_a3bc_7f620ccb6ad0">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1963_35115181_0837_4fd8_9cf5_490828881fe0"
      unitRef="pure">0.0497</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000067564Member_C000217190Member"
      id="h_1964_c6a4d25e_c4d0_44bd_a1ed_9e2d44c29be8">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000067564Member_C000217190Member"
      id="h_1965_8cd41d28_1706_4192_b875_4b43b6ce4a86">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1966_20230c2d_93db_4ac3_a85f_33ee0ac24d5d"
      unitRef="pure">-0.0593</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000067564Member_C000217190Member"
      id="h_1967_c121d0f2_6221_471e_bd27_8a7700e63115">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000067564Member"
      id="t_760_c99cab3d_9166_4655_98d2_11bf45af7ef3">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000067564Member_C000217190Member"
      id="t_1989_84211e3d_10ee_92b7_29c5_ef0b9faa3ae2">2020-02-25</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1968_0f267b63_fab7_41fb_83a1_5361cc6fc183"
      unitRef="pure">0.0183</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067564Member_C000217190Member"
      decimals="4"
      id="h_1969_918bae4a_a76b_4165_bff7_540c17bc3782"
      unitRef="pure">-0.0115</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067564Member_C000217190Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1970_7e189f8a_aa35_4f86_b507_6f8744b18f0b"
      unitRef="pure">0.0022</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067564Member_C000217190Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_1971_e5300730_6274_456d_8cb7_1dcf1333c985"
      unitRef="pure">-0.0202</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067564Member_C000217190Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1972_cd227463_3be5_4de6_95a9_d11bc47b8cd2"
      unitRef="pure">0.0108</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067564Member_C000217190Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_1973_e382b7a6_5a24_433e_a361_3e01847a791b"
      unitRef="pure">-0.0123</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067564Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1974_1fa49dc6_42ff_43ed_97fc_45e9a228d657"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067564Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_1975_b39e7552_0799_4ea4_800f_f2c53d066aaf"
      unitRef="pure">-0.0099</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000067564Member_ICE2029MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1976_9443289b_735f_41a4_9dd5_21cff4496f2c"
      unitRef="pure">0.0182</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000067564Member_ICE2029MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_1977_01f90ee9_3ecc_40ec_91b7_45efbf23a721"
      unitRef="pure">-0.0112</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000067564Member"
      id="t_1984_47eef056_f95f_e8e8_16ff_2d68c1dd0a9f">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2029 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2029 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2029 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000067564Member"
      id="t_1985_0944803f_851e_0c70_69e5_e73712abc306">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000067564Member"
      id="t_1986_8152e1f0_94aa_0a68_d2ac_f52502d79a99">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000067564Member"
      id="t_1987_de18daea_e870_eae7_d32b_6396f24d2925">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000067564Member"
      id="t_1988_d9c1225c_0871_3b44_d79c_f066fdedd221">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000068912Member"
      id="t_1999_25e998b5_18fc_689b_b65a_7a05071d060b"> iSHARES&#xae; iBONDS&#xae; DEC 2030 TERM TREASURY ETF  Ticker: IBTKStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000068912Member"
      id="t_761_1545434a_3808_402f_9ec0_44295fa65e5b">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000068912Member"
      id="t_762_26158b54_8e11_4127_ba04_1e4aecdfc62b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2030 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2030.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000068912Member"
      id="t_763_6432c039_daa5_4b0e_9f9b_0ff885d2a743">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000068912Member"
      id="t_764_41e57dbb_7ef3_4c55_8f23_8d42272a7566"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2030. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000068912Member"
      id="t_2000_4079402d_536a_c1f4_d771_c4b9663f1bc1">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000068912Member"
      id="t_2001_1ae250ff_ed97_ebbe_6c88_8dc4cc19a672">December 15, 2030</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000068912Member"
      id="t_2002_bff3d8c9_79d5_5830_023b_c1cd5c1dbe4d">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1978_9165f25a_61d1_411f_a3af_d22a25f5610b"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1979_daaf7679_d19e_4e85_9851_0f2efab5ca0c"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1980_fa5fb199_9c00_4662_be5a_6ec99e76516a"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1981_633b443b_ae1e_4652_bec1_55b43c4b85cc"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1982_24649d9b_54e6_490b_b28f_942b1b6ede2d"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1983_4145034d_fcbc_4cff_9e6a_36fed4c215a0"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1984_191e89d2_96a4_4885_ab66_f03f868ac07a"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000068912Member"
      id="t_2003_cdd68dda_da12_8a35_f1ef_72cb23f31a9f">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000068912Member"
      id="t_2004_bc1fce61_887b_d493_b802_9bf24434113c">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2030 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000068912Member_C000220170Member"
      decimals="INF"
      id="h_1985_d75211c8_b6ab_41c4_a189_8a414123f17a"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000068912Member_C000220170Member"
      decimals="INF"
      id="h_1986_f9ccb614_dc27_4bd7_b672_034e3ad17856"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000068912Member_C000220170Member"
      decimals="INF"
      id="h_1987_0ca4fb45_c1e4_4e2a_bd41_d63177de47b8"
      unitRef="USD">40</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000068912Member_C000220170Member"
      decimals="INF"
      id="h_1988_2546c4b2_ac20_44c5_be3c_8b5a8d2d77d5"
      unitRef="USD">47</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000068912Member"
      id="t_2005_646bbe02_0578_2ca3_d4cb_7883a34a441d">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000068912Member"
      id="t_2006_b7667983_cef3_2750_20cd_1b55686ec73f">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 15% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000068912Member"
      decimals="4"
      id="h_1989_97ab0aa5_dd3b_4c93_9168_51c42b8d6fec"
      unitRef="pure">0.15</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000068912Member"
      id="t_766_32862e04_dda4_4472_aa70_d8b792acf6ac"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000068912Member"
      id="t_767_ceb9ff59_f5d6_4520_8530_1e379098708e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2030 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2030 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2030, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2030, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2030, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000068912Member"
      id="t_768_aa44f431_45eb_4e73_9e83_1e18fc1b4a29"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000068912Member_RiskLoseMoneyMember"
      id="t_2007_2b6dd27e_0707_927f_426b_1189d77d7162">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_USTreasuryObligationsRiskMember"
      id="t_2025_fd8a7674_7aa8_55a9_83a0_2540715dcfa0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_InterestRateRisksMember"
      id="t_2026_6fc212f1_b47e_50e7_c2de_77c583ecb7a2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_MarketRiskMember"
      id="t_2027_5cc9af19_85c0_94d5_b796_49a24d001d93">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_IndexRelatedRiskMember"
      id="t_2028_c93a83aa_84b8_f3ed_72eb_e88b94230164">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_AssetClassRiskMember"
      id="t_2029_1da771c5_09cf_ef70_ecc2_99f0f7329d74">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_2030_7d9ca10e_cc94_13d1_c11c_6cf407983cae">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000068912Member_ConcentrationRiskMember"
      id="t_2031_a36873c6_687e_30f1_9f76_36cb985c0a87">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_CybersecurityRiskMember"
      id="t_2032_bda7b015_706b_eb67_a7c4_1cc78bec8cb2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
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      contextRef="S000068912Member_DecliningYieldRiskMember"
      id="t_2033_4cbe9e04_749e_b16c_1ac9_c43daa3f4cef">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_IncomeRiskMember"
      id="t_2034_add38dfc_b13b_64f1_bc99_2f131bcd6033">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_IssuerRiskMember"
      id="t_2035_08771868_dfad_5f44_a85a_33846ea81257">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_ManagementRiskMember"
      id="t_2036_f45508bc_f10d_d3af_210a_bd9f45df1d94">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_MarketTradingRiskMember"
      id="t_2037_5fec772f_87cf_3cbf_d2fb_8139d6fd2ae7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_OperationalRiskMember"
      id="t_2038_87bf1f61_0e28_519b_5042_4013b286a649">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_RiskOfInvestingInTheUSMember"
      id="t_2039_ac815ff6_01b0_2f7c_1515_bad86789abc9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_SecuritiesLendingRiskMember"
      id="t_2040_f2425970_cc0d_0a89_7da6_40bc4999b3cd">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000068912Member_TrackingErrorRiskMember"
      id="t_2041_9e8f4fcd_25b8_57f9_5cf2_4006a7c3de66">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000068912Member"
      id="t_769_bf3bb91b_10f3_4da9_a57a_8d7310e04251"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000068912Member"
      id="t_2008_ba8c1546_d6d3_9709_480f_3b7d5e98587a">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000068912Member"
      id="t_2009_222c8a57_5d36_2e25_13d5_6177c1cb03e9">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000068912Member"
      id="t_2010_d11b5045_ab1a_b292_9c8a_2f52a5b5beef">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000068912Member"
      id="t_2011_4e964eb8_346d_264e_7890_508ed33627f6">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000068912Member"
      id="t_2012_f327644e_2996_90b0_b462_08d08c9963dd">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000068912Member"
      id="t_2013_0886a629_c1f2_405c_7b63_fe9dc63a31eb">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000068912Member"
      id="t_2014_66669793_cc82_dd2c_503c_8551bf3dc780">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.29pt;"&gt;5.52%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-6.72%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2021&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000068912Member_C000220170Member"
      id="h_1993_7b9c7b07_4aee_47c4_b250_5734da162a28">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1994_7fdc47ee_64a6_4cd1_971d_28c3f5ce3313"
      unitRef="pure">0.0552</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000068912Member_C000220170Member"
      id="h_1995_d156704e_0f3a_4382_988c_43907a6ecff4">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000068912Member_C000220170Member"
      id="h_1996_117982ff_cd4e_47b7_8c72_69f94d639630">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1997_2bb13c1f_61fc_4a1f_a306_2599a81ad0d1"
      unitRef="pure">-0.0672</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000068912Member_C000220170Member"
      id="h_1998_aa07eee7_ea84_4f2a_9ecf_3418c519f4e5">2021-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000068912Member"
      id="t_771_f882cc73_eac9_48d2_ad31_e925d7b35b83">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000068912Member_C000220170Member"
      id="t_2020_c0082694_1c9c_1405_3b24_40fd6fd359f5">2020-07-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_1999_1fbc998a_67a0_4675_9fac_935616bac2f1"
      unitRef="pure">0.0120</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068912Member_C000220170Member"
      decimals="4"
      id="h_2000_b5c5cf4e_29ff_45c0_a1b5_ad9fd0204efe"
      unitRef="pure">-0.0364</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068912Member_C000220170Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2001_0b881fe2_fdef_4481_89a2_8eeefb2e1ff9"
      unitRef="pure">-0.0039</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068912Member_C000220170Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2002_4fd258da_ed50_4f7d_9415_548e3d89754a"
      unitRef="pure">-0.0453</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068912Member_C000220170Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2003_ab9c9a01_fca6_440c_960c_be4cc7629883"
      unitRef="pure">0.0070</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068912Member_C000220170Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2004_08e55ddd_2533_4306_bfb7_a1639f5c0c63"
      unitRef="pure">-0.0308</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068912Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2005_c1ea1ed0_d001_4a92_90ca_d5a77ac12611"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068912Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2006_e52b16f0_17f6_49cb_93e2_f2c2762ef18b"
      unitRef="pure">-0.0186</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000068912Member_ICE2030MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2007_c9c48f55_db2d_45e6_aacf_a95228667904"
      unitRef="pure">0.0125</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000068912Member_ICE2030MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2008_441bf217_535e_4f90_9715_1352b517f7da"
      unitRef="pure">-0.0360</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000068912Member"
      id="t_2015_b11eb209_3f98_86b2_fa6f_cad4ca2823fb">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2030 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2030 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2030 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000068912Member"
      id="t_2016_f4456941_c05a_613a_675c_390e27e72f01">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000068912Member"
      id="t_2017_661ecc59_8fb8_935e_00f3_235187aea1fb">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000068912Member"
      id="t_2018_16d796ed_c3df_09fe_7e28_44988c7c8eaf">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000068912Member"
      id="t_2019_e69b0bf5_7abe_e6c6_cc98_b28d73ec293d">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000072402Member"
      id="t_2030_17afad03_e14a_9816_b95c_0874464fd002"> iSHARES&#xae; iBONDS&#xae; DEC 2031 TERM TREASURY ETF  Ticker: IBTLStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000072402Member"
      id="t_772_97382ea1_1943_444a_972f_8e08c538b43a">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000072402Member"
      id="t_773_665cb1b9_19a1_4ea6_b391_c59644025891"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2031 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2031.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000072402Member"
      id="t_774_59d1340a_10ff_429d_a12d_f74993d71974">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000072402Member"
      id="t_775_19d302db_2b72_468f_bbe7_2b29ecfa4d21"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2031. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000072402Member"
      id="t_2031_ab6e06de_46c6_760f_be79_32508b102154">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000072402Member"
      id="t_2072_75e1ceb7_735a_089b_7679_911b2433cda2">December 15, 2031</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000072402Member"
      id="t_2032_f38cbbee_81f5_9f57_8524_85abaa87015f">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2009_fca45c06_dc29_43e3_a168_8f3ab9c63e62"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2010_85f8ecba_2901_483e_8fac_6731c6541c6a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2011_e4d95a60_e363_4414_9a1a_1d6c8557c2a1"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2012_07151f50_ca99_4a50_ab5b_0481972a18b9"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2013_084c38b9_0259_4b42_8f7f_4da1e10fa45e"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2014_d866f6a9_435a_4262_801a_a60a07c7a872"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2015_883a97a7_6d13_44bd_bb34_22ed4abf570a"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000072402Member"
      id="t_2033_66b6bb93_06a7_99e4_2e87_cd0365219870">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000072402Member"
      id="t_2034_1fc0c912_0e1c_21ca_ef4e_9446802b7342">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2031 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000072402Member_C000228602Member"
      decimals="INF"
      id="h_2016_ed6c5079_cc55_4d7f_a474_77fb5498f24c"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000072402Member_C000228602Member"
      decimals="INF"
      id="h_2017_3e2ad540_f15b_4004_808e_485db9af3d95"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000072402Member_C000228602Member"
      decimals="INF"
      id="h_2018_18cb7387_7abf_4b8e_87ac_bf41dcdc6812"
      unitRef="USD">40</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000072402Member_C000228602Member"
      decimals="INF"
      id="h_2019_6b24804f_59cd_4cda_aa26_2966a8326875"
      unitRef="USD">56</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000072402Member"
      id="t_2035_414761d2_f2c5_c4c3_e9c6_6f85ee0afe57">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000072402Member"
      id="t_2036_df2a0f5e_f489_4bb0_3a3b_2bf4b9a030b7">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 39% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000072402Member"
      decimals="4"
      id="h_2020_e71f84cb_b4e7_4877_92eb_d5228afed0a6"
      unitRef="pure">0.39</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000072402Member"
      id="t_777_70dd91b0_1dab_4237_aef6_d3bd1130e26d"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000072402Member"
      id="t_778_a2bb729a_ea15_42ba_8afe_8c115d291f7f"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2031 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2031 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2031, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2031, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2031, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000072402Member"
      id="t_779_b6df738f_1de1_4760_97de_18e43350ca61"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000072402Member_RiskLoseMoneyMember"
      id="t_2049_1cb2137b_f4b8_b3eb_d5f1_187c3f10172b">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_USTreasuryObligationsRiskMember"
      id="t_2055_afd1a3f3_9c93_2bca_5662_624cc7740d92">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_InterestRateRisksMember"
      id="t_2056_81483695_b10f_1b15_86dd_8ad3fce06b21">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_MarketRiskMember"
      id="t_2057_11ded0fd_69d1_602f_4e36_bda65165f96f">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_IndexRelatedRiskMember"
      id="t_2058_e7c1d0b7_6cb1_8a0c_16c7_32513e2c565c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_AssetClassRiskMember"
      id="t_2059_91c5b960_5e86_c27b_1c0d_c82c387a0ec3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_2060_cf1a3015_2bbc_c3fc_1b6a_5562caf16910">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_ConcentrationRiskMember"
      id="t_2061_62fae548_d068_d54e_f88f_567a0164a020">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_CybersecurityRiskMember"
      id="t_2062_d494fe14_436c_02c8_2b07_8061e196cba7">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_DecliningYieldRiskMember"
      id="t_2063_4376cdc6_e5b6_9b15_a174_41d2d96e7901">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_IncomeRiskMember"
      id="t_2064_42020438_ef8f_4caf_03cd_7a2ab01d627d">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_IssuerRiskMember"
      id="t_2065_9bcd151e_6773_dfc3_21e2_2f66a2b88ee0">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_ManagementRiskMember"
      id="t_2066_39e64305_570b_9108_6e0f_1dfff8350aa6">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_MarketTradingRiskMember"
      id="t_2067_09d2debf_e6ed_108f_000b_11bd82c370ff">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_OperationalRiskMember"
      id="t_2068_ac5be038_3226_7d9f_ca29_46f7268deb11">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_RiskOfInvestingInTheUSMember"
      id="t_2069_3d354ee1_3c85_be7c_1aa1_666a47b72e5e">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_SecuritiesLendingRiskMember"
      id="t_2070_feb01557_201a_da6a_ed3c_681f2b5a3133">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000072402Member_TrackingErrorRiskMember"
      id="t_2071_5e672781_18df_1430_3c05_1d26cd6ae107">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000072402Member"
      id="t_780_3ec8e8a4_3a39_4e67_bd98_191a25827276"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000072402Member"
      id="t_2037_2f2c54c8_b790_df95_fa55_77ea96cc5ebd">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt;</rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000072402Member"
      id="t_2038_902ed34b_a4e5_a697_172b_288f21ca1ca1">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000072402Member"
      id="t_2039_2145b40f_7cdb_064a_771b_07c8e671a50a">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000072402Member"
      id="t_2040_87712241_1057_1433_d051_6802448cca83">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000072402Member"
      id="t_2041_dfaad899_93fb_d4d8_1a83_dcc9c24cbddb">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000072402Member"
      id="t_2042_75d8a597_af22_692c_1832_4bb0243beefa">Calendar Year-by-Year Returns&#x2003;</rr:BarChartHeading>
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      contextRef="S000072402Member"
      id="t_2043_22a0d7bb_168e_040d_a6c4_b8e53d9f7e6d">
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 252.00pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.86pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.86pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 4.08pt;"&gt;6.19%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 137.16pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.86pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.86pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-6.66%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 70.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000072402Member_C000228602Member"
      id="h_2024_2523f607_c089_4ceb_9acf_14d27b9da605">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2025_4bae8ffb_523a_4238_96a9_d5d9aad81f4b"
      unitRef="pure">0.0619</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000072402Member_C000228602Member"
      id="h_2026_3e8c7695_fb06_4034_ba73_d128e79a61c7">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000072402Member_C000228602Member"
      id="h_2027_560f720f_09ae_4b6a_8e7f_9a2f2e9add7a">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2028_abc4dadf_905a_45c4_a5d5_5268d4482b7b"
      unitRef="pure">-0.0666</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000072402Member_C000228602Member"
      id="h_2029_9212d220_a79f_45f6_8611_ccaadf1dadca">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000072402Member"
      id="t_782_98066f3a_2659_49af_8105_4e65564a690a">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000072402Member_C000228602Member"
      id="t_2050_88b4bea1_d016_a4a5_461b_237c5cf4b737">2021-07-13</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2030_2f9291ce_8e5b_4a1e_b940_fd3a656ba056"
      unitRef="pure">0.0023</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072402Member_C000228602Member"
      decimals="4"
      id="h_2031_a748c22d_283a_4e9a_af27_fc18769df5ac"
      unitRef="pure">-0.0370</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072402Member_C000228602Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2032_1d5a38c2_ff54_4131_9580_bf13cb029e40"
      unitRef="pure">-0.0139</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072402Member_C000228602Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2033_90efb9df_e8fd_4515_b1eb_4f7c1d2a25c3"
      unitRef="pure">-0.0483</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072402Member_C000228602Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2034_cc3acdde_a30f_42c7_b312_993f2c1373e5"
      unitRef="pure">0.0014</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072402Member_C000228602Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2035_a8347370_6f3c_4827_830d_896797df1c8d"
      unitRef="pure">-0.0324</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072402Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2036_12dc55fe_9ae3_4070_b592_aa8dbed5cb79"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072402Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2037_01113f41_2938_426a_a459_893b6c008ab9"
      unitRef="pure">-0.0213</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000072402Member_ICE2031MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2038_cc7516cd_9a2d_4bb4_8a43_da512a5a1206"
      unitRef="pure">0.0026</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000072402Member_ICE2031MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2039_01f69510_61dc_49bf_8670_2db88e2ceeea"
      unitRef="pure">-0.0365</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000072402Member"
      id="t_2048_43d631df_f41e_5700_4aee_c25aff571f3e">Index returns through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2031 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2031 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000072402Member"
      id="t_2044_60f78ed1_6837_b82f_1eea_446f8165d594">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt;</rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000072402Member"
      id="t_2045_3196b10d_c0e6_d58a_d6c9_5e7333fb009f">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000072402Member"
      id="t_2046_fd675c24_5384_eeef_58a1_d3005af21888">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000072402Member"
      id="t_2047_f1a0343a_049f_56b0_dca2_94e0e910c881">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000076714Member"
      id="t_2061_1480ff19_7ae7_3b2a_0dfa_209cb3e82bd1"> iSHARES&#xae; iBONDS&#xae; DEC 2032 TERM TREASURY ETF  Ticker: IBTMStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000076714Member"
      id="t_783_df4edf8b_c810_4a78_a0a6_e63d564d4378">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000076714Member"
      id="t_784_e6630776_d644_445e_b61b_399be7751ef8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2032 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2032.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000076714Member"
      id="t_785_3fa84aac_4652_4591_b669_a67898f96e50">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000076714Member"
      id="t_786_cc486ff1_aa1c_4250_852b_b40c9461f892"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2032. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000076714Member"
      id="t_2062_a359b6e7_c449_037b_db30_63a8a4edf5ed">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000076714Member"
      id="t_2063_13be914d_ec59_4db7_8bc9_5ac2d916a743">December 15, 2032</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000076714Member"
      id="t_2064_bac13daf_4ca7_ebe3_cb7e_586e3eb90ce3">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2040_8877dd45_6016_45bf_b66c_097cf87cd2dd"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2041_aecc11eb_5cc2_4990_9835_a12ca18a890a"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2042_f1e9f337_812d_400c_8ccf_2c8a67be96a7"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2043_3ee907ba_d6fa_4930_9d39_92b8e33410c9"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2044_e598a6be_2537_45bf_8378_a9b00327c06b"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2045_0dc5fce9_e101_4f79_879d_c8cd6adf97f1"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2046_6fc2db9e_0b3d_474b_9415_b1272e7f027b"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000076714Member"
      id="t_2065_8242239b_78e1_b0ad_8875_2d1466f3768c">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000076714Member"
      id="t_2066_18d2755b_a3f3_1b0c_d8b2_54ae0e95ec9a">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2032 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000076714Member_C000236733Member"
      decimals="INF"
      id="h_2047_b030db03_44e6_462c_a49a_ab1a6849be4b"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000076714Member_C000236733Member"
      decimals="INF"
      id="h_2048_5d6032f3_4f5d_4afa_9f0f_ef93a70b03cd"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000076714Member_C000236733Member"
      decimals="INF"
      id="h_2049_f57cf080_3940_4da3_93b5_19f611853ed0"
      unitRef="USD">40</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000076714Member_C000236733Member"
      decimals="INF"
      id="h_2050_08935c58_27a5_4be3_a01c_27c7f849eb3c"
      unitRef="USD">66</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000076714Member"
      id="t_2067_8118eaa2_8573_4668_a71b_a73cac4dd909">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000076714Member"
      id="t_2068_1ce1811d_ce34_13f7_0889_28c1845da312">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 2% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000076714Member"
      decimals="4"
      id="h_2051_d9a0bfbb_c711_4336_acf4_0b77711eb9ca"
      unitRef="pure">0.02</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000076714Member"
      id="t_788_43903a08_51d4_4569_9511_4515b83736bf"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000076714Member"
      id="t_789_725e27f0_08b6_483f_a634_510eca3dc023"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2032 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2032 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2032, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2032, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2032, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000076714Member"
      id="t_790_46017e4c_9e50_4dd0_88b4_b796b54a613c"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000076714Member_RiskLoseMoneyMember"
      id="t_2069_2b704c3c_306c_461e_aa4c_b44433927cdb">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_USTreasuryObligationsRiskMember"
      id="t_2083_15c7edb0_ad89_d981_5f1b_5c7bd3113857">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_InterestRateRisksMember"
      id="t_2084_60ae4e5a_826f_d4e0_49c4_c6df117644e9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_MarketRiskMember"
      id="t_2085_68de3fd7_587d_52bb_88a2_eb58fd2cd464">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_IndexRelatedRiskMember"
      id="t_2086_87118c8b_fe7b_d343_0c80_60efe0a3dade">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_AssetClassRiskMember"
      id="t_2087_f705f377_3c6d_0a0e_1294_bec22fcead49">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_2088_bacd9d4f_e412_0329_1506_7c2fc9ebcbc9">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_ConcentrationRiskMember"
      id="t_2089_a9418e2f_4e07_ca5d_abc7_7871be083282">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_CybersecurityRiskMember"
      id="t_2090_826ce9b7_c777_cf88_58cd_bf66926e90d3">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_DecliningYieldRiskMember"
      id="t_2091_f42e131f_51e7_f438_23a0_635a8e0cbd4b">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_IncomeRiskMember"
      id="t_2092_b6bcd237_3322_bc46_05d4_795620ac4a9a">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_IssuerRiskMember"
      id="t_2093_ad568e6e_c0ac_0b4a_7f00_e6903dbb55a5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_ManagementRiskMember"
      id="t_2094_da4a8f3f_3907_e566_b597_b805e9c126ea">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_MarketTradingRiskMember"
      id="t_2095_effb43fb_f946_702e_e0e4_c25e40714ce2">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_OperationalRiskMember"
      id="t_2096_a8c95b49_3221_7900_3962_35c3c4dc2115">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_RiskOfInvestingInTheUSMember"
      id="t_2097_95b33a4b_4194_638d_1a4f_ea3d168981e5">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_SecuritiesLendingRiskMember"
      id="t_2098_fc2a6698_05a9_6949_9a43_3b58a2195c61">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000076714Member_TrackingErrorRiskMember"
      id="t_2099_ce2518bb_490f_595d_1fe9_2250ce75c56c">&lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt;</rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000076714Member"
      id="t_791_547ca0d0_c91a_4600_bcd6_d63574de88a7"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000076714Member"
      id="t_2070_1e46f90e_1b5b_e28d_0e1c_a2b1293d25ea"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000076714Member"
      id="t_2072_5505f151_79a8_2ade_1416_9634e6e51791">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000076714Member"
      id="t_2073_f835ea06_3bc0_6e72_7976_1a18326ccd15">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000076714Member"
      id="t_2074_0c28741a_65c4_b071_d4a9_51b2ea796ae1">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000076714Member"
      id="t_2075_3fe563ed_66df_1d09_923b_73e2ad2a2468">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000076714Member"
      id="t_2071_b6c3386f_2a44_3194_881c_dc124628ea16"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000076714Member"
      id="t_2076_56431599_aec9_14a1_a97e_dc400994794c"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.34pt;"&gt;6.40%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.95pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.95pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.64%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2023&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000076714Member_C000236733Member"
      id="h_2055_bd658629_9a9f_485e_898e_de47cb6e822d">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2056_cc5c5033_d5e4_44ed_823c_15c04ede13b8"
      unitRef="pure">0.0640</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000076714Member_C000236733Member"
      id="h_2057_a7d0a763_c511_45d5_b59e_2f41dc260295">2023-12-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000076714Member_C000236733Member"
      id="h_2058_960efc07_632b_4eef_a97d_e19b06000b04">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2059_9d907e38_971b_4981_a493_4aa538b3b96e"
      unitRef="pure">-0.0464</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000076714Member_C000236733Member"
      id="h_2060_6dd4c494_11a9_4bf8_91d3_f57bbc36702b">2023-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000076714Member"
      id="t_793_da8aed0e_4765_4f96_b63c_f970ee978887">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000076714Member_C000236733Member"
      id="t_2077_8679a3ff_a845_3d79_cdc7_5ace4b727639">2022-07-06</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2061_8515d18a_7cab_4c89_9052_09f65143f534"
      unitRef="pure">-0.0007</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076714Member_C000236733Member"
      decimals="4"
      id="h_2062_af1746be_18ab_419d_aefb_1742b06c5a5d"
      unitRef="pure">-0.0112</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076714Member_C000236733Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2063_0757cea9_e15a_4c0d_902a_bef2004ead2f"
      unitRef="pure">-0.0164</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076714Member_C000236733Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2064_47ae2300_3720_4383_8bdd_9e3182085d63"
      unitRef="pure">-0.0251</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076714Member_C000236733Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2065_a995d59f_488e_4230_881c_bb23ff8cec4a"
      unitRef="pure">-0.0004</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076714Member_C000236733Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2066_210aa4e8_3953_4627_9032_249372c9ed1b"
      unitRef="pure">-0.0142</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076714Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2067_061663f1_0d44_4521_8ee1_509a44d898a8"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076714Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2068_07bbb211_982d_4da8_ba34_a0d88744d0ac"
      unitRef="pure">0.0134</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000076714Member_ICE2032MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2069_ab486c44_2606_4e34_9cb2_d24524541226"
      unitRef="pure">-0.0001</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000076714Member_ICE2032MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2070_2121403d_784a_4ced_a5c8_09b8a559c360"
      unitRef="pure">-0.0108</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000076714Member"
      id="t_2082_bc899ee0_6de8_80a5_c74e_47fe3d5624ca">Index returns through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2032 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2032 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000076714Member"
      id="t_2078_4918b583_9872_f687_c337_e79bdb949a54"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000076714Member"
      id="t_2079_af673cc8_cc99_7ae5_07ce_3be6c18678f1">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000076714Member"
      id="t_2080_ffb5bf5c_ca52_5353_cad5_7953066bcb12">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000076714Member"
      id="t_2081_e880d316_f8f1_03b9_df59_5f6849c296d0">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000080644Member"
      id="t_2092_b47f9ca5_fe9d_eac1_a9ae_20b4612849eb"> iSHARES&#xae; iBONDS&#xae; DEC 2033 TERM TREASURY ETF  Ticker: IBTOStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000080644Member"
      id="t_794_1ac34cbe_3708_4fb9_aafd_490c6c3bffb6">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000080644Member"
      id="t_795_cec1803a_2dbf_45b6_b881_24648f19bb0e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2033 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2033.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000080644Member"
      id="t_796_622b95aa_1c79_49db_80ad_33383c2b9224">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000080644Member"
      id="t_797_5db05001_7fb4_46dd_a66d_263e0a822046"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2033. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000080644Member"
      id="t_2128_1bf406a8_9058_c397_02fd_cb0cf73d015a">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000080644Member"
      id="t_2129_80b8e24b_c1cf_a883_4d89_26afb76c559e">December 15, 2033</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000080644Member"
      id="t_2127_33c568ac_c862_9292_4b03_6fe486ad0cba">Annual Fund Operating Expenses(ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2071_d86bbeb3_1139_4a65_bf17_c7ea6b248e55"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2072_1a0722cf_8100_4126_a2fb_a420f8d85653"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2073_975c447c_d261_477d_9b1b_b11d336a682b"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2074_2daf3128_c44c_4eb1_83ab_bf769bfac58c"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2075_cf5c38a2_4894_4b5f_b4f1_7abbfdedad03"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2076_d2628cde_bbdb_439f_a1fa_22d8b184a669"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2077_2c8388b6_6657_4a00_97d4_b1930e519ad2"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000080644Member"
      id="t_2125_cbcc58c3_c8ff_3b2b_e2b8_0d2bdced48ca">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000080644Member"
      id="t_2126_9f26fb15_b963_5278_899e_f40c6c9642ab">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2033 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000080644Member_C000243160Member"
      decimals="INF"
      id="h_2078_735a1523_61ec_4b37_a17f_6eb95c55ff5c"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000080644Member_C000243160Member"
      decimals="INF"
      id="h_2079_34e815aa_7592_4428_9e81_eba04c468f96"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000080644Member_C000243160Member"
      decimals="INF"
      id="h_2080_c738bfd2_3b15_4fae_9287_7ce74c3b7b0e"
      unitRef="USD">40</rr:ExpenseExampleYear05>
    <ist:ExpenseExampleMaturity
      contextRef="S000080644Member_C000243160Member"
      decimals="INF"
      id="h_2081_d4f1bace_2482_4c40_a290_5773f4d28797"
      unitRef="USD">77</ist:ExpenseExampleMaturity>
    <rr:PortfolioTurnoverHeading
      contextRef="S000080644Member"
      id="t_2123_e860279a_efbb_4e38_2054_655dff025551">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000080644Member"
      id="t_2124_995258f0_954c_f1cd_59a2_dd3d52a04ca7">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 23% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000080644Member"
      decimals="4"
      id="h_2082_43786ac1_e3ed_4502_8989_f61bd8cc5388"
      unitRef="pure">0.23</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000080644Member"
      id="t_799_cd01ec2b_ace0_4ef4_be5d_d1340e1edd59"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000080644Member"
      id="t_800_794224b3_16fb_4989_8d69_c6a1c3fd8aad"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2033 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2033 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2033, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2033, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2033, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000080644Member"
      id="t_801_4dcb212e_87d2_4294_b3c6_b9e06571d3d3"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000080644Member_RiskLoseMoneyMember"
      id="t_2105_223dce7d_e231_1464_f370_20a0569a7da3">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_USTreasuryObligationsRiskMember"
      id="t_2106_28cf9f56_3191_13e2_3b30_3f4b972d1f71"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_InterestRateRisksMember"
      id="t_2107_5012beb4_2f20_d908_aec9_cb50bb878c41"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_MarketRiskMember"
      id="t_2108_29f79191_554b_00fe_b8f5_43170ad6b64f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_IndexRelatedRiskMember"
      id="t_2109_43c6a318_0a7f_a013_e87e_cc07304acc4c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_AssetClassRiskMember"
      id="t_2110_ab10fb68_5a4e_817c_8f45_ad9c27756e8b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_2111_9e403dc7_7e0c_2f7f_2552_c4a39050ea81"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_ConcentrationRiskMember"
      id="t_2112_dce32870_2bcf_9429_49ce_028fa71d7cf8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_CybersecurityRiskMember"
      id="t_2113_d7f2c2b6_c0f4_0e37_42e1_3d4a14e76716"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_DecliningYieldRiskMember"
      id="t_2114_a53ba34d_9de4_7e37_8135_476de7f63159"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_IncomeRiskMember"
      id="t_2115_d4399af1_3cd0_d285_ec36_aaafdcd48bba"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_IssuerRiskMember"
      id="t_2116_2e6aee01_eab4_06bc_7d00_fa2c8d363235"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_ManagementRiskMember"
      id="t_2117_11353982_322c_4fe3_535e_cfc7a94042f3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_MarketTradingRiskMember"
      id="t_2118_4e33cec8_b548_a31a_7d63_6770ed184390"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_OperationalRiskMember"
      id="t_2119_243dc382_242d_99fb_8f51_865c12a0a57a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_RiskOfInvestingInTheUSMember"
      id="t_2120_e4fe51fb_edd7_2a52_6909_964c4d705bde"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_SecuritiesLendingRiskMember"
      id="t_2121_fb7f436a_e2cf_6ba1_4f1f_d2ec44026be8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000080644Member_TrackingErrorRiskMember"
      id="t_2122_8da303c6_56ee_4742_264d_07702dd724ff"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000080644Member"
      id="t_802_63061f36_31c6_402c_a6f0_1519de151c3e"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000080644Member"
      id="t_2093_51f9f0c2_8811_d3e4_8f00_75ab78b878b7"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000080644Member"
      id="t_2101_6e2200de_c5b2_f6c6_0872_b1bb9c6d555d">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000080644Member"
      id="t_2102_f712c733_e4f7_bad4_8dd9_6d836262a82a">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000080644Member"
      id="t_2103_4dc7fd1d_197d_1dfd_54a0_3bc80d1ba035">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000080644Member"
      id="t_2104_be0f9180_894c_fa7b_658f_7c1baf64780e">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000080644Member"
      id="t_2094_be4c7780_749b_0bc7_ce23_65ca71dafe3a"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000080644Member"
      id="t_2095_6f3e9df4_7535_e031_24b3_72e3b83f9a51"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the period shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.92pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.92pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.67pt;"&gt;5.74%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 133.53pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 24.92pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 24.92pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-4.57%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 73.82pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;December 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000080644Member_C000243160Member"
      id="h_2086_5ea912ac_a1e0_4a18_ba33_9e6598bfe08b">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2087_dec7aea4_c1f8_46c5_b907_b665f53fc183"
      unitRef="pure">0.0574</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000080644Member_C000243160Member"
      id="h_2088_4dcd9eb7_38cb_4a3d_b3dd_c5c8d84cae7e">2024-09-30</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000080644Member_C000243160Member"
      id="h_2089_64cd5c08_dffc_455e_be5f_5048e7e79b5f">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2090_c9932d47_9761_4ef4_8b6b_0ad630f2a6f2"
      unitRef="pure">-0.0457</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000080644Member_C000243160Member"
      id="h_2091_4a2ed421_2d2b_406f_bac9_ba296da9a307">2024-12-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000080644Member"
      id="t_804_b7c5dbe0_edc0_4ac5_826d_264136e824c8">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000080644Member_C000243160Member"
      id="t_2100_8ef60f05_4742_2ec1_44cb_a8d61b719c5d">2023-06-27</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2092_2672f928_3067_4189_9a45_da17ee795fc3"
      unitRef="pure">-0.0078</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080644Member_C000243160Member"
      decimals="4"
      id="h_2093_3416eea3_5cb3_46ea_af28_221675c8293b"
      unitRef="pure">0.0012</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080644Member_C000243160Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2094_9bfb59d6_d591_4bf6_95a1_16728665f9d8"
      unitRef="pure">-0.0243</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080644Member_C000243160Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2095_43f6e73e_426b_4ac8_8a12_857e6e8fbff0"
      unitRef="pure">-0.0145</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080644Member_C000243160Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2096_1eba33c0_65fe_45aa_af42_6fa284ea98eb"
      unitRef="pure">-0.0045</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080644Member_C000243160Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2097_86c28082_23f7_4476_b1ee_372d658d89cb"
      unitRef="pure">-0.0056</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080644Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2098_f22b5d7a_4756_44c2_b223_9dd438308f78"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080644Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2099_5b7ba219_90a1_4364_a44b_f2c396073650"
      unitRef="pure">0.0295</rr:AverageAnnualReturnSinceInception>
    <rr:AverageAnnualReturnYear01
      contextRef="S000080644Member_ICE2033MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2100_06468928_320a_4a77_b0ed_64748e76807a"
      unitRef="pure">-0.0073</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnSinceInception
      contextRef="S000080644Member_ICE2033MaturityUSTreasuryIndexMember"
      decimals="4"
      id="h_2101_06e7a7d1_12aa_4062_889b_b354c9747ea3"
      unitRef="pure">0.0012</rr:AverageAnnualReturnSinceInception>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000080644Member"
      id="t_2099_442d106b_2862_700f_35e4_f184f8c14c20"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000080644Member"
      id="t_2096_61fdaeb1_6fa0_540d_f365_60184d950f81">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000080644Member"
      id="t_2097_2bad4f3d_63ce_8a11_f584_d157cc1e449c">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000080644Member"
      id="t_2098_5707c2de_3a5a_b250_b286_29e4c440e59f">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000085229Member"
      id="t_836_97cf0ca8_701e_6bc8_4b5b_ac655fde22c6"> iSHARES&#xae; iBONDS&#xae; DEC 2034 TERM TREASURY ETF  Ticker: IBTPStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000085229Member"
      id="t_805_a3d9755d_5abe_442f_bc06_536a977922d7">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000085229Member"
      id="t_806_68e4a821_d73e_4fa9_9363_c382aa299f0c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2034 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2034.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000085229Member"
      id="t_807_6090391d_cf15_4cc9_b8da_0e8846d4ad8c">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000085229Member"
      id="t_808_0ef4256c_8609_4505_9b22_b18430d93a36"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2034. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000085229Member"
      id="t_837_328f8a14_5afc_ea40_4e4c_5afa9531d093">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000085229Member"
      id="t_838_6c323c03_4093_9c33_9b1b_11335c464247">December 15, 2034</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000085229Member"
      id="t_839_6ec4593f_640e_604c_a3b0_1cd17de92b41">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000085229Member_C000250196Member"
      decimals="4"
      id="h_2102_9662ec8d_8cd5_44ec_8a9a_b52202ebb1b0"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000085229Member_C000250196Member"
      decimals="4"
      id="h_2103_ca2c1ab0_9e15_412f_8f7b_fd1a24c37659"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000085229Member_C000250196Member"
      decimals="4"
      id="h_2104_668eaa4c_2303_44e0_b71d_047520bbe88a"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000085229Member_C000250196Member"
      decimals="4"
      id="h_2105_8489fe8a_48ba_4af5_9f9d_3cd0e7e18290"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000085229Member_C000250196Member"
      decimals="4"
      id="h_2106_5e2e53e7_bf69_4f10_9e2d_63e6a7d84421"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000085229Member_C000250196Member"
      decimals="4"
      id="h_2107_a34f30b0_cca4_4ef3_92d2_9626afbc2a92"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000085229Member_C000250196Member"
      decimals="4"
      id="h_2108_d77a95ed_68cc_4ac9_97eb_0425102bbc7d"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000085229Member"
      id="t_846_5eba9035_d0b4_c260_d437_d680d6feb1df">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000085229Member"
      id="t_847_d982fed9_4977_4d01_e811_d1af74d43951">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000085229Member"
      id="t_842_6ee61b51_6aae_9704_4de6_e0bf987ef5da">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000085229Member"
      id="t_843_c1025c4a_bc71_22ec_02e5_ba362635a516">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2034 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000085229Member_C000250196Member"
      decimals="INF"
      id="h_2109_2dd2b236_8f65_47c8_b667_16455e2ff67e"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000085229Member_C000250196Member"
      decimals="INF"
      id="h_2110_28ceb49d_d120_4217_8b4f_67f80a066f03"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000085229Member"
      id="t_844_df6de012_f542_fbd3_9966_2cf539b06671">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000085229Member"
      id="t_845_a2df925e_360e_68e2_8b05_cdbdfa32ba9e">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. From inception (June 11, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 61% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000085229Member"
      decimals="4"
      id="h_2111_ff32b5ee_2f35_4a7a_8b68_674631478958"
      unitRef="pure">0.61</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000085229Member"
      id="t_810_a5588cb1_ade0_47b6_a415_c231ea09fff4"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000085229Member"
      id="t_811_0f91d976_4454_4b8b_8626_7c2753e9e73b"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2034 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2034 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2034, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2034, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2034, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000085229Member"
      id="t_812_2324a721_bc02_4d35_bf91_5e9cdc13f470"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000085229Member_RiskLoseMoneyMember"
      id="t_815_066b8c45_7b76_91f0_576e_8b67dc420cf2">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_USTreasuryObligationsRiskMember"
      id="t_816_a69fb250_35ec_b719_2258_3ac86e7d6064"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_InterestRateRisksMember"
      id="t_817_e8cfb3f2_13b6_2e11_a4d1_fa15f420bb26"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_MarketRiskMember"
      id="t_818_86a0101a_b775_c1f0_73d9_209e04c76175"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_IndexRelatedRiskMember"
      id="t_819_545a5684_6951_4ee5_876d_7c3023eb3bd3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085229Member_AssetClassRiskMember"
      id="t_820_d70f9cf1_daa7_0789_c12a_21e313cc3f62"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_AssetsUnderManagementAUMRiskMember"
      id="t_821_73ec4ebf_b1e0_77b2_05d2_37139b8a4e1a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_822_80428595_f14c_d4be_3660_9e721193e461"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_ConcentrationRiskMember"
      id="t_823_45d6395d_6184_3ada_6637_fa44bf52d839"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_CybersecurityRiskMember"
      id="t_824_cc51179f_6ecf_c2fe_f866_607f206502af"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_DecliningYieldRiskMember"
      id="t_825_338f025e_45a1_d623_a428_bb74e5a5dce7"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_IncomeRiskMember"
      id="t_826_c28822db_3aec_cfbd_8b51_46e37acd9e70"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_IssuerRiskMember"
      id="t_827_e1abb82e_21b3_0507_e773_766e85285435"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_ManagementRiskMember"
      id="t_828_59764e82_a0bd_0305_1d42_964c9ef494bf"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_MarketTradingRiskMember"
      id="t_829_966cfe9a_f31e_5e4e_c944_8790cfbfac76"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_OperationalRiskMember"
      id="t_830_fdc863a1_7642_d269_30d4_f3e9d2572850"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_RiskOfInvestingInTheUSMember"
      id="t_831_ed8196fc_4c76_c277_7f72_480f68010585"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_SecuritiesLendingRiskMember"
      id="t_832_225032ce_90e4_fb14_1911_9b734220fd3c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_SmallFundRiskMember"
      id="t_833_0261dbf3_dfa2_17f2_02fb_550a05d86d7a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085229Member_TrackingErrorRiskMember"
      id="t_834_8fbbd4f4_031b_2ef4_b693_f745b16dbdd3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000085229Member"
      id="t_813_2b8ad6ae_3bcc_4678_953e_179ba57e6eb4"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000085229Member"
      id="t_814_07631093_31a7_4db1_991b_01e1812dd658">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000085229Member"
      id="t_835_92f453c9_b4f5_245b_39ff_8cfd0eabe930"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000085230Member"
      id="t_825_419d2bf6_1f3b_d307_f24e_213479fd0deb"> iSHARES&#xae; iBONDS&#xae; DEC 2044 TERM TREASURY ETF  Ticker: IBGAStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000085230Member"
      id="t_815_249b5e04_fc2c_4f37_b176_6c47ab01c35d">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000085230Member"
      id="t_816_4449f745_bf08_4bed_9ff8_3d6068cb87b8"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2044 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2044.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000085230Member"
      id="t_817_5570948d_dad1_4c9e_8112_2ea4183b100e">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000085230Member"
      id="t_818_aae99acc_db72_4e37_90cf_097e2db2ac73"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2044. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000085230Member"
      id="t_826_ac87493a_40b1_4fda_d0f2_4e5d015400d5">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000085230Member"
      id="t_827_97f447df_5b92_b45e_9c0a_29e4d51ba0f3">December 15, 2044</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000085230Member"
      id="t_828_89f8223f_6b94_a569_bced_3633b3091c39">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000085230Member_C000250197Member"
      decimals="4"
      id="h_2112_b1eb1f27_60b1_4d39_94bb_c456f1e816dc"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000085230Member_C000250197Member"
      decimals="4"
      id="h_2113_69560388_680e_4196_b956_e27fa57c8bd9"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000085230Member_C000250197Member"
      decimals="4"
      id="h_2114_d1eaf7e9_afcf_4e30_84f1_9c8f66034b01"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000085230Member_C000250197Member"
      decimals="4"
      id="h_2115_fc81bfe5_4c74_46fd_b19a_a672ed585fa5"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000085230Member_C000250197Member"
      decimals="4"
      id="h_2116_60d4b29d_4682_4700_9d19_43c20d129cef"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000085230Member_C000250197Member"
      decimals="4"
      id="h_2117_ff28cf41_55a8_4071_8a47_48b1490a6e56"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000085230Member_C000250197Member"
      decimals="4"
      id="h_2118_ba7d9016_ec6d_4704_adc8_b71de16569e6"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000085230Member"
      id="t_856_21e17535_f8ff_2ada_25d8_2e6e0953b623">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000085230Member"
      id="t_857_9505b5f6_578a_004a_e8b7_1c575900ab24">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000085230Member"
      id="t_831_574338fc_aa91_1b8c_fb28_ba26caaace7a">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000085230Member"
      id="t_832_aaa17527_96b3_b41f_f1c8_76e80101cb17">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2044 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000085230Member_C000250197Member"
      decimals="INF"
      id="h_2119_f8f86075_8c2f_41ec_bf16_ddd807ab6052"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000085230Member_C000250197Member"
      decimals="INF"
      id="h_2120_73e3410e_442a_4784_820f_52b7ad4df268"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000085230Member"
      id="t_833_43afd87e_d0fb_d904_aa45_d8a201980672">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000085230Member"
      id="t_834_f278ac9d_5e6f_cd9c_61ea_f18ec463a4ab">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. From inception (June 11, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 51% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000085230Member"
      decimals="4"
      id="h_2121_350f2dae_e365_4fc1_8fc9_1cfc17a932cb"
      unitRef="pure">0.51</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000085230Member"
      id="t_820_3106e6ea_5b7d_435d_9a15_6d2ef71cb5ee"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000085230Member"
      id="t_821_44f60cad_8f00_4087_ab25_b8f273a05663"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2044 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2044 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2044, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2044, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement. &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2044, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000085230Member"
      id="t_822_fbc4ae59_72c6_4cb9_9e4c_a55e1efc0ac5"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000085230Member_RiskLoseMoneyMember"
      id="t_835_7ac82c16_7ea2_4217_3b35_88b08e2b43bb">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_USTreasuryObligationsRiskMember"
      id="t_837_cc709604_f4b3_ee7d_4c6e_9bba627ee2fa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_InterestRateRisksMember"
      id="t_838_f7501731_2a73_9149_2d88_b04593c9ba32"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_MarketRiskMember"
      id="t_839_b20c6ff4_9dbc_b5f3_794c_4a6c18e32d91"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_IndexRelatedRiskMember"
      id="t_840_018b4d00_7541_2aac_19bb_3e7e7cd857f1"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_AssetClassRiskMember"
      id="t_841_625c24ed_2a8e_1495_9bdd_06b34317027d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_AssetsUnderManagementAUMRiskMember"
      id="t_842_a07c3290_5129_c656_569b_a31cbeeb8ad0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_843_80049b12_cd01_daf1_82ce_7f6014ec422f"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_ConcentrationRiskMember"
      id="t_844_675a9588_d070_559b_8c19_57554d630408"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_CybersecurityRiskMember"
      id="t_845_430df958_2265_2f1e_8d7b_16d8cf7bbc88"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_DecliningYieldRiskMember"
      id="t_846_793e1e04_2195_f36e_2409_34998f045c9d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_IncomeRiskMember"
      id="t_855_37af2389_9fce_8741_7a3f_221b8d5de465"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_IssuerRiskMember"
      id="t_854_5e4f1805_a57c_fa7c_cbb1_e9a22f3aee50"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_ManagementRiskMember"
      id="t_853_30fbf15b_29fd_2838_ef6e_86ab5092d1dc"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_MarketTradingRiskMember"
      id="t_848_e3d744ca_0f46_8265_f9d5_91f791af092a"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_OperationalRiskMember"
      id="t_849_0884d21f_06da_ecf5_ede5_50b8f5a3d464"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_RiskOfInvestingInTheUSMember"
      id="t_850_da0743cf_511c_d4e1_140d_f8c99e4528a0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_SecuritiesLendingRiskMember"
      id="t_851_94102fd4_d0af_d20e_d1fc_ee472e697522"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_SmallFundRiskMember"
      id="t_852_7ca66b9d_6827_72bd_9e82_8c8cefe551b6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085230Member_TrackingErrorRiskMember"
      id="t_847_31d42654_1ed9_a881_210e_0c4c4cd00f9b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000085230Member"
      id="t_823_ddcab062_21c5_41fb_be20_2cfdcaebcd78"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000085230Member"
      id="t_824_77b59eab_5dd9_4361_8f1f_b68949b77d74">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000085230Member"
      id="t_836_60586f6a_567e_dbaa_0b1a_69db23401d69"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000085232Member"
      id="t_835_c7b20dac_6522_7246_5265_e3bf86b76bdf"> iSHARES&#xae; iBONDS&#xae; DEC 2054 TERM TREASURY ETF  Ticker: IBGKStock Exchange: Nasdaq  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000085232Member"
      id="t_825_1ec8b229_1103_4f7f_979e_56a8a546ee60">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000085232Member"
      id="t_826_f30c1849_d80e_4ee3_ada9_91d879cec102"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares iBonds Dec 2054 Term Treasury ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds maturing in 2054.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000085232Member"
      id="t_827_d0988204_51ca_48e1_a378_0f233be7b8ec">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000085232Member"
      id="t_828_08f8d9f2_7ef2_4e3d_806b_5617e7868d79"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may incur &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Acquired Fund Fees and Expenses.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Acquired Fund Fees and Expenses reflect the Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;pro rata&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; share of the fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred indirectly by the Fund as a result of investing in other investment companies. The impact of Acquired Fund Fees and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shown in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Financial Highlights&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; section of the Fund's prospectus (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Prospectus&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). BFA, the investment adviser to the Fund, has &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contractually agreed to waive a portion of its management fees in an amount equal to the Acquired Fund Fees and Expenses, if any, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;attributable to investments by the Fund in other funds advised by BFA or its affiliates through the termination date of the Fund, on or about &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;December 15, 2054. The contractual waiver may be terminated prior to the Fund's termination only upon the written agreement of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust and BFA.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="S000085232Member"
      id="t_836_79eac5ff_731b_f83c_ce35_f99bd325b4af">The impact of Acquired Fund Fees and Expenses is included in the Fund's total return but is not included in the Fund's ratio of expenses to average net assets. Both figures are shown in the Financial Highlights section of the Fund's prospectus (the &#x201c;Prospectus&#x201d;).</rr:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="S000085232Member"
      id="t_837_1d114cb2_1533_8ef4_5a28_55b2dee31d04">December 15, 2054</rr:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <rr:OperatingExpensesCaption
      contextRef="S000085232Member"
      id="t_838_96a29ba7_0cc4_52c4_7c73_0a35e5250cce">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000085232Member_C000250199Member"
      decimals="4"
      id="h_2122_dfc6d316_2ab6_481b_8812_e09e39284df4"
      unitRef="pure">0.0007</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000085232Member_C000250199Member"
      decimals="4"
      id="h_2123_e8031548_c45e_4cb5_b7f2_27f1f1d22b0d"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000085232Member_C000250199Member"
      decimals="4"
      id="h_2124_c9f8660b_3ed8_4988_814b_bac27357d2df"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:AcquiredFundFeesAndExpensesOverAssets
      contextRef="S000085232Member_C000250199Member"
      decimals="4"
      id="h_2125_986c9e21_81a5_40be_b050_d87a85e55152"
      unitRef="pure">0.0000</rr:AcquiredFundFeesAndExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000085232Member_C000250199Member"
      decimals="4"
      id="h_2126_57edff9b_7c34_4b6d_a0e8_6ba4ea7e221e"
      unitRef="pure">0.0007</rr:ExpensesOverAssets>
    <rr:FeeWaiverOrReimbursementOverAssets
      contextRef="S000085232Member_C000250199Member"
      decimals="4"
      id="h_2127_077904a0_f577_402c_88b4_051f7b993274"
      unitRef="pure">0.0000</rr:FeeWaiverOrReimbursementOverAssets>
    <rr:NetExpensesOverAssets
      contextRef="S000085232Member_C000250199Member"
      decimals="4"
      id="h_2128_18f4e1dc_36c1_40f3_8002_26357f936308"
      unitRef="pure">0.0007</rr:NetExpensesOverAssets>
    <rr:OtherExpensesNewFundBasedOnEstimates
      contextRef="S000085232Member"
      id="t_868_fbdbdb8c_99c5_11d4_da7c_eca965db3124">Based on estimated amounts for the current fiscal year.</rr:OtherExpensesNewFundBasedOnEstimates>
    <rr:AcquiredFundFeesAndExpensesBasedOnEstimates
      contextRef="S000085232Member"
      id="t_869_36771776_3bd6_60cf_b5ed_4dfdcccac7f9">Based on estimated amounts for the current fiscal year.</rr:AcquiredFundFeesAndExpensesBasedOnEstimates>
    <rr:ExpenseExampleHeading
      contextRef="S000085232Member"
      id="t_841_42f3573e_6993_a351_21da_25b4a2ca3713">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000085232Member"
      id="t_842_67c829af_6e93_eef5_c178_0358b3efd04f">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods.Fund expenses (and any applicable waivers) are calculated only through December 15, 2054 because the Fund is scheduled to cease operations and liquidate by that date. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000085232Member_C000250199Member"
      decimals="INF"
      id="h_2129_35185ab3_eaae_43f7_818a_8551687acead"
      unitRef="USD">7</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000085232Member_C000250199Member"
      decimals="INF"
      id="h_2130_791e284a_447e_454d_a971_bbfda4030cda"
      unitRef="USD">23</rr:ExpenseExampleYear03>
    <rr:PortfolioTurnoverHeading
      contextRef="S000085232Member"
      id="t_843_3d650d5c_d13d_7330_6127_b5f597660f59">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000085232Member"
      id="t_844_16b01c93_b074_40d0_330b_4a3f7aa99d2a">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. From inception (June 11, 2024) to the most recent fiscal year end, the Fund's portfolio turnover rate was 104% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000085232Member"
      decimals="4"
      id="h_2131_2ce65379_d59d_442f_8ed3_9e3efc892452"
      unitRef="pure">1.04</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000085232Member"
      id="t_830_da8c1045_c144_4922_8a4c_3c6cf3ccad1b"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000085232Member"
      id="t_831_f1d86378_fada_441f_a48b_22e643dbf845"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to meet its investment objective generally by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investing in individual securities which satisfy the criteria of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE 2054 Maturity US Treasury Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of publicly-issued U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities that are scheduled to mature between January 1, 2054 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and December 15, 2054, inclusive. The Fund may also invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;short-term paper, cash and cash equivalents, including shares of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;money market funds advised by BFA or its affiliates. The Fund is a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term fund that will terminate on or about December 15, 2054, at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which time it will distribute its remaining net assets to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;seek to return any predetermined amount at maturity or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;periodic distributions.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Qualifying securities are U.S. Treasury notes and bonds having $1 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;billion or more of outstanding face value, excluding amounts held &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;by the Federal Reserve System Open Market Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;In addition, the securities in the Underlying Index must have a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed coupon schedule and be denominated in U.S. dollars. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Excluded from the Underlying Index are inflation-linked securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury bills and Separate Trading of Registered Interest and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Principal of Securities (STRIPS). However, the amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding of qualifying securities in the Underlying Index are not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reduced by any individual components of such securities (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon or principal) that have been stripped after inclusion in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Securities issued or marketed primarily to retail &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA times price plus accrued interest. Accrued interest is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming next-day settlement.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must settle on or before the following calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for inclusion for such following &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;e.g.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, an issue must settle on or before November 30 in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;order to be included in the index on October 31). The securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month. Cash flows from bond payments that are received during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the month are retained in the Underlying Index until the end of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month and then are removed as part of the rebalancing. When &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash or a security is removed as part of the rebalancing, it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;effectively increases the weighting of the remaining securities in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index, and the Fund is required to invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;remaining securities to bring its holdings in line with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index, in each case except as &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;described below. The Fund will invest no more than 10% of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets in futures, options and swaps contracts that BFA believes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will help the Fund track the Underlying Index. Cash and cash &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;equivalent investments associated with a derivative position will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be treated as part of that position for the purposes of calculating &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the percentage of investments included in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index before fees and expenses of the Fund. In the last six months &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of operation, as the bonds held by the Fund mature, the proceeds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;will typically be reinvested by the Fund in investments already in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index but may also be invested in other cash and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cash equivalents as determined by BFA. To the extent that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests in money market or similar funds, it will incur the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fees and expenses of such funds.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;By December 15, 2054, the Fund is expected to consist almost &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;entirely of cash. On or around this date, the Fund will wind up and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;terminate. After appropriate provision is made for any Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;liabilities, its net assets will be distributed to then-current &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders pursuant to a plan of liquidation. The Fund's &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;termination was approved by a majority of the Trust's Board of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trustees (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Board&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and does not require additional approval by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund shareholders. The Board may extend the termination date if &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a majority of the Board determines the extension to be in the best &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000085232Member"
      id="t_832_36518905_bbec_4a8f_9471_79465933638a"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000085232Member_RiskLoseMoneyMember"
      id="t_846_6dff360f_0365_3399_6e60_b6922903e25b">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_USTreasuryObligationsRiskMember"
      id="t_847_fd1c14af_8569_2cd4_d484_f90e5468beb2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_InterestRateRisksMember"
      id="t_848_c645a193_15d0_df22_a65d_b4ed4635e1fd"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_MarketRiskMember"
      id="t_849_0227de24_c1fb_561a_5fde_cebf49656382"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_IndexRelatedRiskMember"
      id="t_853_630ee1ec_6c00_9e47_63a7_a5848e3454e2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_AssetClassRiskMember"
      id="t_854_d486a8f6_ca24_3d87_c3cd_135ade7c4d2b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_AssetsUnderManagementAUMRiskMember"
      id="t_855_a409ca46_c03b_78cb_d306_b6db67ae1b56"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Assets Under Management (AUM) Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; From time to time, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized Participant (as defined below in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;Concentration Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), a third-party investor, the Fund&#x2019;s adviser, an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affiliate of the Fund&#x2019;s adviser, or another fund may invest in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and hold its investment for a specific period of time to allow &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to achieve size or scale. There can be no assurance that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any such entity would not redeem its investment or that the size &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the Fund would be maintained at such levels, which could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;negatively impact the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_850_d24ffc39_6c44_8c8f_c1dd_311a4d47c76d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_ConcentrationRiskMember"
      id="t_851_4fcae803_db4f_a1aa_3e8e_612d78c48877"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_CybersecurityRiskMember"
      id="t_856_3f3bf73c_8df7_74bc_e1bc_16b0d97b33a6"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_DecliningYieldRiskMember"
      id="t_857_c7e75fbc_a15b_5e3a_57b4_967570e821f5"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Declining Yield Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; During the six months prior to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;planned termination date, the Fund&#x2019;s yield may move toward &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;prevailing money market rates and may be lower than the yields &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the bonds previously held by the Fund and lower than prevailing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;yields for bonds in the market.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_HighPortfolioTurnoverRiskMember"
      id="t_860_dbc37505_1218_2562_9ee3_23e0cfdffabb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;High Portfolio Turnover Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; High portfolio turnover is &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;considered by the Fund to mean turnover of greater than 100% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;annually. Portfolio turnover (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;., the sale of securities or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets and reinvestment in other securities or assets) generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves transaction costs to the Fund, including brokerage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;commissions, dealer mark-ups and other costs. In addition, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sale of securities by the Fund may result in the realization of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxable capital gains, including short-term capital gains. Higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio turnover may cause the Fund to incur additional &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transaction costs, which have the effect of reducing the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment return, and may result in different tax consequences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;for shareholders compared to a fund with lower portfolio turnover.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_IncomeRiskMember"
      id="t_862_af6957d2_7515_24e8_81ec_445475134424"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature or are near maturity, or bonds in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index are substituted, or the Fund otherwise needs to purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;additional bonds. As the Fund does not seek to return any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;predetermined amount at maturity or in periodic distributions, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amount of income generated by the Fund may vary during its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;term.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_IssuerRiskMember"
      id="t_863_876d12c4_cf2d_366a_f276_6cf7f3bcb632"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_ManagementRiskMember"
      id="t_866_2c95f437_6d3c_b6e9_3816_958fce9a2fe9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_MarketTradingRiskMember"
      id="t_867_8823cf11_ad34_8aa5_a7d8_dd94bd15a9ef"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000085232Member_OperationalRiskMember"
      id="t_858_f343bbc6_31e7_ff61_f49f_abc099022232"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_RiskOfInvestingInTheUSMember"
      id="t_859_2c31a30f_5414_e50b_b15b_f4b2c38166d0"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_SecuritiesLendingRiskMember"
      id="t_861_053bbd74_7d72_34a3_46ba_18e2bb4e69b8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_SmallFundRiskMember"
      id="t_864_3355ecf4_8a01_e793_cd8d_b611f3fb0019"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Small Fund Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;When the Fund&#x2019;s size is small, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;experience low trading volume and wide bid/ask spreads. In &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;addition, the Fund may face the risk of being delisted if it does not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;meet certain requirements set by the listing exchange. Any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;resulting liquidation of the Fund could lead to elevated transaction &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;costs for the Fund and negative tax consequences for its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000085232Member_TrackingErrorRiskMember"
      id="t_865_789cf89a_b5d4_43ca_a449_972f6ec4ac36"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions. Until the Fund reaches greater scale, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;it may experience higher tracking error than is typical for similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;index ETFs.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000085232Member"
      id="t_833_1191635d_1fa3_4d64_bde7_2d05ccb9815c"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000085232Member"
      id="t_834_dedd9fe4_d2a2_4df5_80c7_a7c50b19cc61">  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;As of the date of this Prospectus, the Fund does not have a full &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calendar year of performance information to report.&lt;/span&gt;&lt;/div&gt;  </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceOneYearOrLess
      contextRef="S000085232Member"
      id="t_845_f00afe33_d1d3_1462_6c59_504b649c7aec"> As of the date of this Prospectus, the Fund does not have a full calendar year of performance information to report. </rr:PerformanceOneYearOrLess>
    <rr:RiskReturnHeading
      contextRef="S000044143Member"
      id="t_2150_6d61a800_84d6_195b_0ea4_1e9274ec5dcf"> iSHARES&#xae; TREASURY FLOATING RATE  BOND ETF  Ticker: TFLOStock Exchange: NYSE Arca  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000044143Member"
      id="t_835_a3db8b44_d142_4219_a400_46cbae464e5d">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000044143Member"
      id="t_836_84850499_2cb0_49cf_96dc_b16d01554d9a"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares Treasury Floating Rate Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;floating rate bonds.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000044143Member"
      id="t_837_b1a6280f_c538_40ba_a4c4_1195ff97e1d6">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000044143Member"
      id="t_838_54fd9bf1_0580_4fc1_b677_52e892d648c6"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000044143Member"
      id="t_2151_ef56567c_af8c_34f4_902b_cdbdc64bec8c">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2132_df29529c_4313_40e3_9a4a_f738434ea5d0"
      unitRef="pure">0.0015</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2133_6f3c94b8_c190_4fc8_bf80_9b9cbaad8ba8"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2134_4af204ed_246e_417e_ad52_dc4682fd73ea"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2135_35de662f_f2c9_4fda_97be_4b231b831c47"
      unitRef="pure">0.0015</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000044143Member"
      id="t_2152_29c218d8_8271_6e1f_3779_a1a20210bd22">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000044143Member"
      id="t_2153_3750da05_1c4e_8e81_3b5b_5d23dcb98f13">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000044143Member_C000137225Member"
      decimals="INF"
      id="h_2136_13a32411_cf41_4a0a_8141_4e1f07c9d4ce"
      unitRef="USD">15</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000044143Member_C000137225Member"
      decimals="INF"
      id="h_2137_05fe2e25_4e1c_4ded_a112_6f0a7a638aca"
      unitRef="USD">48</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000044143Member_C000137225Member"
      decimals="INF"
      id="h_2138_79616a8e_9a76_4c12_a99d_5ccd809c65d5"
      unitRef="USD">85</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000044143Member_C000137225Member"
      decimals="INF"
      id="h_2139_8fbb29b6_f191_4d01_b1be_ebebd7f553e4"
      unitRef="USD">192</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000044143Member"
      id="t_2154_7605b10c_353a_c525_bd56_2e7c1d5a4d6d">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000044143Member"
      id="t_2155_48238eee_d67c_31ce_642d_05246dbfc1da">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 28% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000044143Member"
      decimals="4"
      id="h_2140_887722a4_8dbe_4310_ae6b_1026993308a3"
      unitRef="pure">0.28</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000044143Member"
      id="t_840_d05b8f19_392b_4c85_af2d_232434534674"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000044143Member"
      id="t_841_a792f978_c866_49b2_ac7f_fae0739a513e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the Bloomberg &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury Floating Rate Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is a market capitalization-weighted index that measures the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of floating rate public obligations of the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The securities in the Underlying Index must be denominated in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. dollars and must be non-convertible. The securities in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are updated on the last calendar day of each &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index. The Fund will invest no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is sponsored by Bloomberg Index Services &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Limited (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Bloomberg&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000044143Member"
      id="t_842_ede87434_ebc5_4160_9922_c598eaa130fa"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000044143Member_RiskLoseMoneyMember"
      id="t_2156_443f6983_4bb1_fffa_33bb_2f14367ed172">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_USTreasuryObligationsRiskMember"
      id="t_2157_e6cb46a9_7dbc_3991_56cd_b40813a8023c"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_FloatingRateSecuritiesRiskMember"
      id="t_2158_c42f17ae_8c62_7d5b_2cd1_03802bf53b29"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Floating Rate Securities Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Securities with floating or variable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates can be less sensitive to interest rate changes than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities with fixed interest rates, but may decline in value if their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;coupon rates do not reset as high, or as quickly, as comparable &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market interest rates, and generally carry lower yields than fixed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the same maturity. Although floating rate securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are less sensitive to interest rate risk than fixed-rate securities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;they are subject to credit risk and default risk, which could impair &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;their value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_InterestRateRisksMember"
      id="t_2159_c2541b9b_2e76_d1a5_2038_7b426846bc8b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_MarketRiskMember"
      id="t_2160_63056d55_9b14_707e_1f7a_418feb397658"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_IndexRelatedRiskMember"
      id="t_2161_feb7f2e9_8b79_819e_570e_ad8f58d8a049"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_AssetClassRiskMember"
      id="t_2162_63be04f4_4ebb_ed81_488c_a4de0d213029"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_2163_65ad40bb_74ab_204d_fe77_957200911e46"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_ConcentrationRiskMember"
      id="t_2164_06cbd5ea_9c88_2f2e_5375_2234b46b3233"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_CybersecurityRiskMember"
      id="t_2165_e417d289_da94_f1f3_212a_0bcc37cdb3a8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_IncomeRiskMember"
      id="t_2166_24ed6e6e_03a8_a98e_153a_077be6987d7b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because most of the debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;instruments held by the Fund have floating, or variable, interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_IssuerRiskMember"
      id="t_2167_d4fe637f_2ddc_d78a_d99e_eaca76114c07"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_ManagementRiskMember"
      id="t_2168_0b0d5f3a_1db1_f1be_a36a_6d24c5aa496e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_MarketTradingRiskMember"
      id="t_2169_27fd4d1f_ba39_b373_9218_71a064ee4655"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_OperationalRiskMember"
      id="t_2170_4ece7232_6aa6_9868_c7db_4b21dccba25e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_RiskOfInvestingInTheUSMember"
      id="t_2171_02817fcd_acb5_55fd_d587_f320f84f2fa2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_SecuritiesLendingRiskMember"
      id="t_2172_3d85e228_ff33_7886_19c5_896291c3e2b9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000044143Member_TrackingErrorRiskMember"
      id="t_2173_8a512da7_62ed_2348_eaa5_d9c553df8901"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000044143Member"
      id="t_843_254830c8_2350_468d_8ba2_6aa2af2bf3d3"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000044143Member"
      id="t_2174_5813be6b_f543_cc10_a552_196eb45f894c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000044143Member"
      id="t_2176_76b3cc4b_dd60_904c_6fe2_ae2034ab1a4c">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000044143Member"
      id="t_2177_a00608bb_5622_11ef_cab2_cdd740b33cd0">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000044143Member"
      id="t_2178_e061235b_ab82_02d4_434c_26ded196dbec">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000044143Member"
      id="t_2179_d9af20b3_a0a2_93ca_ad87_01eaf409046b">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000044143Member"
      id="t_2175_a6c8e03c_c330_8dd0_2762_78acddaa7ac5"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000044143Member"
      id="t_2185_4609bbec_afaf_98fa_39a5_1530a2f9c59e"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 135.2pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 72.15pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 135.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 3.84pt;"&gt;1.41%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 72.15pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2024&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 135.2pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-0.04%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 72.15pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;September 30, 2015&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000044143Member_C000137225Member"
      id="h_2144_20e62509_80e0_4bc3_8034_a1071a2e4f39">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2145_8ab911c0_7adb_46c8_b451_26ab956e53a4"
      unitRef="pure">0.0141</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000044143Member_C000137225Member"
      id="h_2146_12147667_6f4a_4497_9933_f608b8d83987">2024-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000044143Member_C000137225Member"
      id="h_2147_851a9b17_87ba_4157_bfb2_c1814e433243">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2148_4453b964_bfde_4fa1_9bae_d71faf9977c0"
      unitRef="pure">-0.0004</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000044143Member_C000137225Member"
      id="h_2149_a18f02f3_442c_4f4f_a935_0f85bc49aa6f">2015-09-30</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000044143Member"
      id="t_845_5f701eb6_ecc8_4761_bb37_ef99dd8b2f3f">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000044143Member_C000137225Member"
      id="t_2180_69e9b6c2_01cd_8aaa_9e38_82e868fbf925">2014-02-03</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2150_9840f1e2_2bd8_485b_b59e_c1904c4bd7a2"
      unitRef="pure">0.0538</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2151_beb824ff_dec1_4a96_b43a_54d9f93bf866"
      unitRef="pure">0.0254</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044143Member_C000137225Member"
      decimals="4"
      id="h_2152_03ad1d28_8d49_4854_a22a_97eb82e5f76a"
      unitRef="pure">0.0181</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044143Member_C000137225Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2153_5bf32b7b_5d0f_44b4_b53f_5a4ccc435767"
      unitRef="pure">0.0317</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044143Member_C000137225Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2154_b246b75e_782f_4cfe_8138_7a4352353fe4"
      unitRef="pure">0.0153</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044143Member_C000137225Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2155_1454b697_f3bf_4a11_a663_f194ed6b25cb"
      unitRef="pure">0.0109</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044143Member_C000137225Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2156_c8b72bd8_d62a_443b_84f8_bcd8237fab94"
      unitRef="pure">0.0315</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044143Member_C000137225Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2157_e583fde2_86b0_4a60_b10b_64cbdbe0cf59"
      unitRef="pure">0.0151</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044143Member_C000137225Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2158_a7bf6a4d_7202_432d_a7ea_70feddc974cd"
      unitRef="pure">0.0108</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044143Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_2159_5a2b53c3_8428_486a_92cd_f1180c226682"
      unitRef="pure">0.0204</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044143Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_2160_ad5c5318_fedc_4450_ac60_0dc757cdc615"
      unitRef="pure">0.0006</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044143Member_BloombergUSUniversalIndexMember"
      decimals="4"
      id="h_2161_c74cd917_c3f8_498b_b343_6e02e7ba6427"
      unitRef="pure">0.0173</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000044143Member_BloombergUSTreasuryFloatingRateIndexMember"
      decimals="4"
      id="h_2162_b2137562_5f0b_41ef_9c54_f041d40f3251"
      unitRef="pure">0.0551</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000044143Member_BloombergUSTreasuryFloatingRateIndexMember"
      decimals="4"
      id="h_2163_fdd3559a_632d_4d89_8a83_50823a432025"
      unitRef="pure">0.0270</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000044143Member_BloombergUSTreasuryFloatingRateIndexMember"
      decimals="4"
      id="h_2164_08b184af_662d_4faa_a623_a8cfa5e5af5a"
      unitRef="pure">0.0194</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000044143Member"
      id="t_2181_7742ad73_6145_c862_2b85_d46e3c1ab819"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000044143Member"
      id="t_2182_1b5d010f_56a8_accc_4eeb_7fa947687a24">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000044143Member"
      id="t_2183_0d60d60c_f7ef_1b09_9f30_bae9fe420f73">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000044143Member"
      id="t_2184_3edf4e07_574d_d587_f20e_1eff514ee3da">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
    <rr:RiskReturnHeading
      contextRef="S000035919Member"
      id="t_2183_2eaa201a_de3a_8041_ad0e_9a8c4a2b3678"> iSHARES&#xae; U.S. TREASURY BOND ETF  Ticker: GOVTStock Exchange: Cboe BZX  </rr:RiskReturnHeading>
    <rr:ObjectiveHeading
      contextRef="S000035919Member"
      id="t_846_2a9421da_d703_4a2e_a9de_e223827bf993">  Investment Objective  </rr:ObjectiveHeading>
    <rr:ObjectivePrimaryTextBlock
      contextRef="S000035919Member"
      id="t_847_f72aa601_f78d_4390_b9b8_c20e2fb083eb"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The iShares U.S. Treasury Bond ETF (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) seeks to track the investment results of an index composed of U.S. Treasury bonds.&lt;/span&gt;&lt;/div&gt; </rr:ObjectivePrimaryTextBlock>
    <rr:ExpenseHeading
      contextRef="S000035919Member"
      id="t_848_5480e38b_e09d_456d_884c_93f1ced64a43">  Fees and Expenses  </rr:ExpenseHeading>
    <rr:ExpenseNarrativeTextBlock
      contextRef="S000035919Member"
      id="t_849_94586073_37a0_400f_8a5e_f2bc61eb67e2"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The following table describes the fees and expenses that you will incur if you buy, hold and sell shares of the Fund. The investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;advisory agreement between iShares Trust (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Trust&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) and BlackRock Fund Advisors (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Investment Advisory Agreement&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provides that BFA will pay all operating expenses of the Fund, except: (i) the management fees, (ii) interest expenses, (iii) taxes, (iv) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;including brokerage commissions, (v) distribution fees or expenses, and (vi) litigation expenses and any extraordinary expenses.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;the tables and examples below.&lt;/span&gt;&lt;/div&gt; </rr:ExpenseNarrativeTextBlock>
    <rr:OperatingExpensesCaption
      contextRef="S000035919Member"
      id="t_2184_70dc24e3_3110_7385_9ca3_4c77f872203f">Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investments)1</rr:OperatingExpensesCaption>
    <rr:ManagementFeesOverAssets
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2165_22c93dac_85cb_4d63_af51_d7f94d630d42"
      unitRef="pure">0.0005</rr:ManagementFeesOverAssets>
    <rr:DistributionAndService12b1FeesOverAssets
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2166_2d6f7752_e30f_4980_8356_acbc5e0f2c10"
      unitRef="pure">0</rr:DistributionAndService12b1FeesOverAssets>
    <rr:OtherExpensesOverAssets
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2167_c8820ec7_46ae_4db3_b043_b9f6a621ab47"
      unitRef="pure">0.0000</rr:OtherExpensesOverAssets>
    <rr:ExpensesOverAssets
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2168_f7d90b28_8f14_4bb3_9f37_3985b1bb5f43"
      unitRef="pure">0.0005</rr:ExpensesOverAssets>
    <rr:ExpenseExampleHeading
      contextRef="S000035919Member"
      id="t_2185_45b03b4c_0352_0266_bbda_df05ce8664e3">Example.</rr:ExpenseExampleHeading>
    <rr:ExpenseExampleNarrativeTextBlock
      contextRef="S000035919Member"
      id="t_2186_c38560a9_32c6_6336_c49a_05488ba7b757">This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</rr:ExpenseExampleNarrativeTextBlock>
    <rr:ExpenseExampleYear01
      contextRef="S000035919Member_C000110086Member"
      decimals="INF"
      id="h_2169_b16919f6_def5_4dc4_9fef_44c07881e943"
      unitRef="USD">5</rr:ExpenseExampleYear01>
    <rr:ExpenseExampleYear03
      contextRef="S000035919Member_C000110086Member"
      decimals="INF"
      id="h_2170_aff3496a_f6c3_44ed_8ba2_58573785e380"
      unitRef="USD">16</rr:ExpenseExampleYear03>
    <rr:ExpenseExampleYear05
      contextRef="S000035919Member_C000110086Member"
      decimals="INF"
      id="h_2171_9f167fb6_88bf_4d6c_a052_bc70fe833617"
      unitRef="USD">28</rr:ExpenseExampleYear05>
    <rr:ExpenseExampleYear10
      contextRef="S000035919Member_C000110086Member"
      decimals="INF"
      id="h_2172_1853abc9_6426_4364_ba7c_405b9832dc23"
      unitRef="USD">64</rr:ExpenseExampleYear10>
    <rr:PortfolioTurnoverHeading
      contextRef="S000035919Member"
      id="t_2187_3ba7c8df_24c2_5313_94b3_89754b2ed8b8">Portfolio Turnover.</rr:PortfolioTurnoverHeading>
    <rr:PortfolioTurnoverTextBlock
      contextRef="S000035919Member"
      id="t_2188_2cd96516_0e08_23e3_bdd9_a984939c4f06">The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 18% of the average value of its portfolio.</rr:PortfolioTurnoverTextBlock>
    <rr:PortfolioTurnoverRate
      contextRef="S000035919Member"
      decimals="4"
      id="h_2173_63ea5947_bbcc_46b6_8518_1ae00bf2cb6c"
      unitRef="pure">0.18</rr:PortfolioTurnoverRate>
    <rr:StrategyHeading
      contextRef="S000035919Member"
      id="t_851_c60f10ee_a100_4549_a381_22eb327e3e7f"> Principal Investment Strategies </rr:StrategyHeading>
    <rr:StrategyNarrativeTextBlock
      contextRef="S000035919Member"
      id="t_852_d9581499_a457_4a32_ad6a_c9ea7b0715fc"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund seeks to track the investment results of the ICE U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury Core Bond Index (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;measures the performance of public obligations of the U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury. As of October 31, 2024, there were 288 issues in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index consists of U.S. dollar-denominated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign debt publicly issued by the U.S. Treasury in its domestic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market. Qualifying securities must have, as of the rebalancing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;date, a remaining term to final maturity of greater than one year. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index constituents also must have a fixed coupon schedule and an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;adjusted amount outstanding of at least $300 million, excluding &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;amounts held by the Federal Reserve System Open Market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Account (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Excluded from the Underlying Index are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inflation-linked securities, Treasury bills, agency debt issued with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or without a government guarantee, original issue zero coupon &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities and issues that have been stripped from coupon-paying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;bonds. However, the amounts outstanding of qualifying securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are not reduced by any individual components of such securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, coupon or principal) that have been stripped after inclusion &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the Underlying Index. Securities issued or marketed primarily to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;retail investors do not qualify for inclusion in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index constituents are market value-weighted based on amounts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outstanding reduced by amounts held by the Federal Reserve &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;SOMA. Accrued interest is calculated assuming next-day &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;settlement. Cash flows from bond payments and redemptions that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;are received during the month are retained in the Underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index until the end of the month and then are removed as part of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the rebalancing. Cash does not earn any reinvestment income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;while it is held in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is rebalanced on the last calendar day of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;month, based on information available up to and including the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;third business day before the last business day of the month. New &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issues must be auctioned on or before the calendar month end &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rebalancing date in order to qualify for the coming month.&#160;&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses an indexing approach to try to achieve the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment objective. The Fund does not try to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;beat&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; the index it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracks and does not seek temporary defensive positions when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets decline or appear overvalued.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing may eliminate the chance that the Fund will substantially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;outperform the Underlying Index but also may reduce some of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks of active management, such as poor security selection. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Indexing seeks to achieve lower costs and better after-tax &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance by aiming to keep portfolio turnover low in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to actively managed investment companies.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;BFA uses a representative sampling indexing strategy to manage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Representative sampling&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is an indexing strategy that &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;involves investing in a representative sample of securities that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collectively has an investment profile similar to that of an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;applicable underlying index. The securities selected are expected &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to have, in the aggregate, investment characteristics (based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors such as market value and industry weightings), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fundamental characteristics (such as return variability, duration &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic;"&gt;i.e.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;, a security's price sensitivity to a change in interest rates), &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;maturity or credit ratings and yield) and liquidity measures similar &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to those of an applicable underlying index. The Fund may or may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;not hold all of the securities in the Underlying Index.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund will invest at least 80% of its assets in the component &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities of the Underlying Index, and the Fund will invest at least &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;90% of its assets in U.S. Treasury securities that BFA believes will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;help the Fund track the Underlying Index. The Fund will invest no &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more than 10% of its assets in futures, options and swaps &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;contracts that BFA believes will help the Fund track the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index. Cash and cash equivalent investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;associated with a derivative position will be treated as part of that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;position for the purposes of calculating the percentage of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments included in the Underlying Index. The Fund seeks to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;track the investment results of the Underlying Index before fees &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and expenses of the Fund.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may lend securities representing up to one-third of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;value of the Fund's total assets (including the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;collateral received).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Underlying Index is owned, maintained and administered by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;ICE Data Indices, LLC (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IDI&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;), which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;is&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;independent of the Fund and BFA. The Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;determines the composition and relative weightings of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities in the Underlying Index and publishes information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;regarding the market value of the Underlying Index.&lt;/span&gt;&lt;/div&gt; </rr:StrategyNarrativeTextBlock>
    <rr:RiskHeading
      contextRef="S000035919Member"
      id="t_853_7bc39f1c_3499_4960_8cf9_68e2aa884458"> Summary of Principal Risks </rr:RiskHeading>
    <rr:RiskTextBlock
      contextRef="S000035919Member_RiskLoseMoneyMember"
      id="t_2189_757a2851_7c45_3838_849e_fd0e76989d77">As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.</rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035919Member_USTreasuryObligationsRiskMember"
      id="t_2190_a1b6c907_cf5a_6129_5d0d_c4ed2ac56bdb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;U.S. Treasury Obligations Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S. Treasury obligations may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;differ from other securities in their interest rates, maturities, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;times of issuance and other characteristics and may provide &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;relatively lower returns than those of other securities. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the U.S. government&#x2019;s financial condition or credit rating may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of U.S. Treasury obligations to decline. Direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;obligations of the U.S. Treasury have historically involved little risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of loss of principal if held to maturity, but the market value of such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities is not guaranteed and may fluctuate. Although U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Treasury obligations are backed by the full faith and credit of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;United States, circumstances could arise that could prevent the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;timely payment of interest or principal.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035919Member_InterestRateRisksMember"
      id="t_2191_1985b156_9431_0fa6_3abb_499dcaed438b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Interest rate risk refers to the risk of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fluctuations in the value of a fixed-income security due to changes &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the general level of interest rates. Interest rate changes can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sudden and unpredictable and are influenced by a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including government policy, monetary policy, inflation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;expectations, perceptions of risk, and supply and demand for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;fixed-income securities. An increase in interest rates generally will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;cause the value of fixed-income securities to decline. Securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;with longer maturities generally are more sensitive to interest rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes and subject to greater fluctuations in value. Changes in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest rates may have unpredictable effects on fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;markets and result in heightened volatility and lower liquidity for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain instruments, which may adversely affect a Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance. During periods of very low or negative interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;rates, a Fund may be unable to maintain positive returns or pay &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;dividends to shareholders.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035919Member_MarketRiskMember"
      id="t_2194_d42e87d5_3266_fe86_85a0_a9eec093e8fb"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund could lose money over short periods due &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to short-term market movements and over longer periods during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;more prolonged market downturns. Local, regional or global &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;events such as war, acts of terrorism, pandemics or other public &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;health issues, recessions, the prospect or occurrence of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sovereign default or other financial crisis, or other events could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;have a significant impact on the Fund&#x2009;and its investments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;could result in increased premiums or discounts to the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;NAV.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035919Member_IndexRelatedRiskMember"
      id="t_2195_16860305_b6f0_b848_cc89_f9059a224e9e"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Index-Related Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Index Provider may rely on various &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sources of information to assess the criteria of components of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index, including information that may be based on &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assumptions and estimates. Neither the Fund nor BFA can offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assurances that the Index Provider&#x2019;s methodology or sources of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;information will provide an accurate assessment of included &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;components or will result in the Fund meeting its investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;objective. Errors in index data, index computations or the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;construction of the Underlying Index in accordance with its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;methodology may occur, and the Index Provider may not identify &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or correct them promptly or at all, which may have an adverse &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;impact on the Fund and its shareholders. Unusual market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;conditions or other unforeseen circumstances (such as natural &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;disasters, political unrest or war) may impact the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;or a third-party data provider and could cause the Index Provider &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to postpone a scheduled rebalance. This could cause the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index to vary from its normal or expected composition.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035919Member_AssetClassRiskMember"
      id="t_2196_a78384a0_d6a6_ac28_1cdc_8ec8bbfb7ef9"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Asset Class Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The securities and other assets in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index or in the Fund&#x2019;s portfolio may underperform in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;comparison to financial markets generally, a particular financial &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;market, another index, or other asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_AuthorizedParticipantConcentrationRiskMember"
      id="t_2201_202b9748_fa1c_7ac1_bf32_5d8c7ff38bde"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Authorized Participant Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#160; An &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; is a member or participant of a clearing agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;registered with the SEC, which has a written agreement with the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund or one of its service providers that allows the Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant to place orders for the purchase and redemption of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;creation units (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Creation Units&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Only an Authorized Participant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;may engage in creation or redemption transactions directly with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund. There are a limited number of institutions that may act &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;as Authorized Participants for the Fund, including on an agency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;basis on behalf of other market participants. No Authorized &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Participant is obligated to engage in creation or redemption &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;transactions. To the extent that Authorized Participants exit the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business or do not place creation or redemption orders for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and no other Authorized Participant places orders, Fund &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares are more likely to trade at a premium or discount to NAV &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and possibly face trading halts or delisting.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_ConcentrationRiskMember"
      id="t_2192_ad1b91f4_07f5_2d1f_d1f9_555491ba58fa"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be susceptible to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;increased risk of loss, including losses due to adverse events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;affect the Fund&#x2019;s investments more than the market as a whole, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to the extent that the Fund&#x2019;s investments are concentrated in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;securities or other assets of one or more issuers, countries or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other geographic units, markets, industries, project types, or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;asset classes.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_CybersecurityRiskMember"
      id="t_2193_8e536291_8ca7_25b1_6a18_1dc1853e33e3"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Cybersecurity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Failures or breaches of the electronic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;systems of the Fund, its adviser, distributor,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Index Provider, other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties, or issuers of assets in which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund invests may cause disruptions that negatively impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and its shareholders. While the Fund has established &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;business continuity plans and risk management systems seeking &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to address system breaches or failures, there are inherent &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;limitations in such plans and systems. The Fund cannot control &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the cybersecurity plans and systems of its service providers, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparties, and other third parties whose activities affect the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund. In addition, cyber incidents may adversely impact the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;issuers of securities in which the Fund invests, which may cause &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such investments to lose value.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_IncomeRiskMember"
      id="t_2197_353b27d8_d2af_994c_786c_9e259103fd9b"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Income Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund's income may decline if interest rates fall. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;This decline in income can occur because the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;subsequently invest in lower-yielding bonds as bonds in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;portfolio mature, are near maturity or are called, bonds in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index are substituted, or the Fund otherwise needs to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;purchase additional bonds.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035919Member_IssuerRiskMember"
      id="t_2198_54b41a2e_934e_d643_249d_258eccbc8632"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Issuer Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The performance of the Fund depends on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;performance of individual securities or other assets to which the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund has exposure. The value of securities or other assets may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;decline, or perform differently from the market as a whole, due to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;changes in the financial condition or credit rating of the issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;counterparty.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_ManagementRiskMember"
      id="t_2199_152b09cc_0b75_1797_5baf_355bbe2ccdc2"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Management Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund generally does not attempt to take &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;defensive positions under any market conditions, including &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;declining markets. As the Fund will not fully replicate the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index and may hold securities or other assets not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;included in the Underlying Index, it is subject to the risk that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investment strategy of BFA may not produce the intended results. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;There is no guarantee that the Fund&#x2019;s investment results will have &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;a high degree of correlation to those of the Underlying Index or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;that the Fund will achieve its investment objective.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_MarketTradingRiskMember"
      id="t_2200_90fb0d3a_0503_dca9_4684_d35c2097304d"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Market Trading Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund faces numerous market trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;risks, including the potential lack of an active market for Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares (including through a trading halt), losses from trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;secondary markets, periods of high volatility, and disruptions in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the process of creating and redeeming Fund shares. Any of these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, among others, may lead to the Fund&#x2019;s shares trading in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the secondary market at a premium or discount to NAV or to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;intraday value of the Fund&#x2019;s portfolio holdings. If you buy Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shares at a time when the market price is at a premium to NAV or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;sell Fund shares at a time when the market price is at a discount &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to NAV, you may pay significantly more or receive significantly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;less than the underlying value of the Fund shares.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_OperationalRiskMember"
      id="t_2202_14e19e96_0c1d_688f_5389_cfa91d71f379"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Operational Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund is exposed to operational risks arising &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from a number of factors, including, but not limited to, human &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;error, processing and communication errors, errors of the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;service providers, counterparties or other third parties, failed or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;inadequate processes and technology or systems failures. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Fund and BFA seek to reduce these operational risks through &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;controls and procedures. However, these measures do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;address every possible risk and may be inadequate to address &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;significant operational risks.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_RiskOfInvestingInTheUSMember"
      id="t_2203_f542627e_392b_3cd3_99cc_cb358975a9c8"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Risk of Investing in the U.S&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; Investing in U.S. issuers subjects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Fund to legal, regulatory, political, currency, security, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;economic risks that are specific to the U.S. Certain changes in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;U.S., such as a weakening of the U.S. economy or a decline in its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;financial markets, may have an adverse effect on U.S. issuers.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
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      contextRef="S000035919Member_SecuritiesLendingRiskMember"
      id="t_2204_733d4919_c2ae_f252_92ea_a86ad3ce7e13"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Securities Lending Risk. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The Fund may engage in securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lending. Securities lending involves the risk that the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;lose money because the borrower of the loaned securities fails to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;return the securities in a timely manner or at all. The Fund could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;also lose money in the event of a decline in the value of collateral &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;provided for loaned securities or a decline in the value of any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;investments made with cash collateral. These events could also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;trigger adverse tax consequences for the Fund.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:RiskTextBlock
      contextRef="S000035919Member_TrackingErrorRiskMember"
      id="t_2205_dfb2a440_0228_880b_a0e6_dd8f5f53a799"> &lt;div style="line-height: 10.45pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-style: italic; font-weight: bold;"&gt;Tracking Error Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; font-weight: bold;"&gt;.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt; The Fund may be subject to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;tracking error,&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;which is the divergence of the Fund&#x2019;s performance from that of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Tracking error may occur due to a number of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;factors, including differences between the securities and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;assets held in the Fund&#x2019;s portfolio and those included in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; differences in the timing and methodologies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;used to value securities and other assets; transaction costs and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;other expenses incurred by the Fund that the Underlying Index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;does not incur; the Fund&#x2019;s holding of uninvested cash; differences &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;in the timing of the accrual or the valuation of dividends or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;interest received by the Fund or distributions paid to Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; tax gains or losses; the requirements for the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;to maintain pass-through tax treatment; portfolio transactions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;carried out to minimize the distribution of capital gains to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;shareholders; the acceptance of custom baskets; changes to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;Underlying Index; and impacts to the Fund of complying with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;certain regulatory requirements or limits. Tracking error risk may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;be heightened during times of increased market volatility or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;unusual market conditions.&lt;/span&gt;&lt;/div&gt; </rr:RiskTextBlock>
    <rr:BarChartAndPerformanceTableHeading
      contextRef="S000035919Member"
      id="t_854_053ee17d_adf4_485c_b07b_2065d04b49df"> Performance Information </rr:BarChartAndPerformanceTableHeading>
    <rr:PerformanceNarrativeTextBlock
      contextRef="S000035919Member"
      id="t_2206_af685b80_c57e_d55b_f4df_f83b74544f97"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market index&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt; line-height: 10.45pt;"&gt;&#x2009;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;the Underlying Index. Fund returns assume the reinvestment of any dividends and distributions. The Fund&#x2019;s returns reflect the impact of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;any agreements to waive or reimburse expenses, which would reduce performance if not in effect. Past performance (before and after &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;taxes) does not necessarily indicate how the Fund will perform in the future. Updated performance information, including the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;current NAV, may be obtained by visiting www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).&lt;/span&gt;&lt;/div&gt; </rr:PerformanceNarrativeTextBlock>
    <rr:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="S000035919Member"
      id="t_2209_1bc331bf_b143_5e9e_fec3_ab1ef5297e35">The performance information below illustrates how the Fund&#x2019;s performance has varied over different periods and provides some indication of the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table compares the Fund&#x2019;s performance to that of an appropriate broad-based securities market indexand the Underlying Index.</rr:PerformanceInformationIllustratesVariabilityOfReturns>
    <rr:PerformancePastDoesNotIndicateFuture
      contextRef="S000035919Member"
      id="t_2210_d1d6d139_6d8f_7dad_c56e_ca30aada0347">Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.</rr:PerformancePastDoesNotIndicateFuture>
    <rr:PerformanceAvailabilityWebSiteAddress
      contextRef="S000035919Member"
      id="t_2208_bb58f752_cc63_5932_2cf7_d1c43aee7771">www.iShares.com</rr:PerformanceAvailabilityWebSiteAddress>
    <rr:PerformanceAvailabilityPhone
      contextRef="S000035919Member"
      id="t_2207_aa978651_24d5_c9d7_3c3f_4d3da52b943f">1-800-iShares (1-800-474-2737) (toll free)</rr:PerformanceAvailabilityPhone>
    <rr:BarChartHeading
      contextRef="S000035919Member"
      id="t_2211_94b0950d_68f7_cc53_6b16_f954546c26c8"> Calendar Year-by-Year Returns&#x2003; </rr:BarChartHeading>
    <rr:BarChartClosingTextBlock
      contextRef="S000035919Member"
      id="t_2212_5d0b34f8_1ae3_e358_412a_67ff2d927154"> 
&lt;table cellpadding="0" cellspacing="0" style="empty-cells: show; margin-left: 139.5pt; width: 252pt;"&gt; 
&lt;tr style="height: 20pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 4pt; padding-top: 4pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 0.5pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 44.64pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 1pt; margin-right: 1pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Return (%)&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 11.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: center; white-space: nowrap;"&gt;&lt;span style="border-bottom: 1pt groove #000000; color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold;"&gt;Period Ended&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 12pt;"&gt; 
&lt;td colspan="3" style="background-color: azure; padding-bottom: 2pt; padding-top: 4pt; vertical-align: Bottom; width: 251.99pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; font-weight: bold; margin-left: 0.0pt;"&gt;During the periods shown in the chart:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; line-height: 9.50pt; margin-left: 0.0pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Best Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 2.38pt;"&gt;8.49%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: #ffffff; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2020&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; 
&lt;tr style="height: 10pt;"&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 150.94pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-right: 3pt; text-align: left; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt; margin-left: 8.0pt;"&gt;Worst Quarter&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; white-space: nowrap; width: 44.64pt;"&gt; &lt;div style="line-height: 9.50pt; margin-left: 3pt; margin-right: 3pt; text-align: right; width: 38.64pt;"&gt; &lt;div style="display: flex; margin: auto; width: 25.0pt;"&gt; &lt;div style="display: flex; white-space: nowrap; width: 25.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;-5.54%&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/td&gt; 
&lt;td style="background-color: azure; padding-bottom: 2pt; padding-top: 2pt; vertical-align: Bottom; width: 56.41pt;"&gt; &lt;div style="line-height: 9.50pt; text-align: left;"&gt; &lt;div style="margin-left: 3pt; text-align: right; white-space: nowrap;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 7.60pt;"&gt;March 31, 2022&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </rr:BarChartClosingTextBlock>
    <rr:HighestQuarterlyReturnLabel
      contextRef="S000035919Member_C000110086Member"
      id="h_2177_c99c6b75_b566_4008_9ba0_70d2ce787383">Best Quarter</rr:HighestQuarterlyReturnLabel>
    <rr:BarChartHighestQuarterlyReturn
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2178_ea4006ac_7e35_4c00_b735_6529f1db7654"
      unitRef="pure">0.0849</rr:BarChartHighestQuarterlyReturn>
    <rr:BarChartHighestQuarterlyReturnDate
      contextRef="S000035919Member_C000110086Member"
      id="h_2179_256b62d5_63a1_4704_80a7_0ae27fcc59c0">2020-03-31</rr:BarChartHighestQuarterlyReturnDate>
    <rr:LowestQuarterlyReturnLabel
      contextRef="S000035919Member_C000110086Member"
      id="h_2180_9d8f8540_1abe_4d62_abae_762acbdd9a97">Worst Quarter</rr:LowestQuarterlyReturnLabel>
    <rr:BarChartLowestQuarterlyReturn
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2181_1c5b2256_378b_4913_8a22_c5eb725d0838"
      unitRef="pure">-0.0554</rr:BarChartLowestQuarterlyReturn>
    <rr:BarChartLowestQuarterlyReturnDate
      contextRef="S000035919Member_C000110086Member"
      id="h_2182_414e375e_91be_4325_b5ef_80b6ef11c7c7">2022-03-31</rr:BarChartLowestQuarterlyReturnDate>
    <rr:PerformanceTableHeading
      contextRef="S000035919Member"
      id="t_856_0a9ee638_8ad4_4b45_bfd2_c4b2f3ccdb72">  Average Annual Total Returns (for the periods ended December 31, 2024)&#x2003;  </rr:PerformanceTableHeading>
    <rr:AverageAnnualReturnInceptionDate
      contextRef="S000035919Member_C000110086Member"
      id="t_2213_72c5994a_5350_0ba6_5930_fbf33cd01ffb">2012-02-14</rr:AverageAnnualReturnInceptionDate>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2183_517840b3_f9ef_49d7_9fdf_aa848fdc0725"
      unitRef="pure">0.0068</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2184_99886fb3_6280_462d_b748_154fc78b7204"
      unitRef="pure">-0.0074</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035919Member_C000110086Member"
      decimals="4"
      id="h_2185_58c9ebfa_5237_402e_b434_def66958ec96"
      unitRef="pure">0.0074</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035919Member_C000110086Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2186_b99e55a3_96f6_47d7_825f_8dfe9c052d39"
      unitRef="pure">-0.0061</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035919Member_C000110086Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2187_e2ee606b_18db_4f05_8173_ad0835a4c302"
      unitRef="pure">-0.0159</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035919Member_C000110086Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_2188_eb7cdda1_63c4_4f16_9b92_1be0820faabc"
      unitRef="pure">-0.0004</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035919Member_C000110086Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2189_88c62b46_dfcb_48ef_b10d_2731f5e2791b"
      unitRef="pure">0.0040</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035919Member_C000110086Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2190_3dc4d62b_8f4f_4a8a_9df5_af7d955a0875"
      unitRef="pure">-0.0090</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035919Member_C000110086Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_2191_2ca98bd8_2c0b_478e_83a5_67541b5a674e"
      unitRef="pure">0.0024</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035919Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2192_f62b8413_183a_4050_8165_90a6aa956e15"
      unitRef="pure">0.0147</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035919Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2193_5da9ded4_32c3_46da_8a75_34ca9406439d"
      unitRef="pure">-0.0034</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035919Member_ICEBofAUSBroadMarketIndexMember"
      decimals="4"
      id="h_2194_7a1ed276_5c06_4a57_b482_eac3d0a261ea"
      unitRef="pure">0.0137</rr:AverageAnnualReturnYear10>
    <rr:AverageAnnualReturnYear01
      contextRef="S000035919Member_ICEUSTreasuryCoreBondIndexMember"
      decimals="4"
      id="h_2195_b883008d_253b_4407_b02f_9ea02b822eec"
      unitRef="pure">0.0071</rr:AverageAnnualReturnYear01>
    <rr:AverageAnnualReturnYear05
      contextRef="S000035919Member_ICEUSTreasuryCoreBondIndexMember"
      decimals="4"
      id="h_2196_b6f7c9ae_8712_4fe2_8fea_c4619c40751e"
      unitRef="pure">-0.0068</rr:AverageAnnualReturnYear05>
    <rr:AverageAnnualReturnYear10
      contextRef="S000035919Member_ICEUSTreasuryCoreBondIndexMember"
      decimals="4"
      id="h_2197_6a5e0bd9_ffcd_4980_b3ad_f08d04695c7d"
      unitRef="pure">0.0082</rr:AverageAnnualReturnYear10>
    <rr:PerformanceTableMarketIndexChanged
      contextRef="S000035919Member"
      id="t_2218_d14a662e_0edc_7f8e_59c2_8c14c83b092d">Index returns through June 30, 2016 reflect the performance of the Bloomberg U.S. Treasury Bond Index. Index returns beginning on July 1, 2016 reflect the performance of the ICE U.S. Treasury Core Bond Index, which, effective as of July 1, 2016, replaced the Bloomberg U.S Treasury Bond Index as the Underlying Index of the Fund. Index returns from July 1, 2016 through February 28, 2021 reflect the standard pricing variant of the ICE U.S. Treasury Core Bond Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE U.S. Treasury Core Bond Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE U.S. Treasury Core Bond Index, which now utilizes pricing as of 4pm, and resulted in a discontinuation of the 4pm pricing variant.</rr:PerformanceTableMarketIndexChanged>
    <rr:PerformanceTableNarrativeTextBlock
      contextRef="S000035919Member"
      id="t_2214_b9b694ba_0cce_716e_39eb_e6a568770d93"> &lt;div style="margin-top: 7pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;reflect the impact of state or local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;such as 401(k) plans or individual retirement accounts (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;IRAs&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;). Fund returns after taxes on distributions and sales of Fund shares are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.55pt;"&gt;before taxes and/or returns after taxes on distributions.&lt;/span&gt;&lt;/div&gt; </rr:PerformanceTableNarrativeTextBlock>
    <rr:PerformanceTableUsesHighestFederalRate
      contextRef="S000035919Member"
      id="t_2215_3532f583_3aa9_26a2_615a_28440f76bfae">After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.</rr:PerformanceTableUsesHighestFederalRate>
    <rr:PerformanceTableNotRelevantToTaxDeferred
      contextRef="S000035919Member"
      id="t_2216_fa28c44e_ec43_3b53_ec48_804db835d48d">Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (&#x201c;IRAs&#x201d;).</rr:PerformanceTableNotRelevantToTaxDeferred>
    <rr:PerformanceTableExplanationAfterTaxHigher
      contextRef="S000035919Member"
      id="t_2217_25d650bd_3e6c_b0ba_55f1_cb31d3519f51">Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sales of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.</rr:PerformanceTableExplanationAfterTaxHigher>
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          xlink:href="#h_1_55535cd0_4896_4db4_8efe_5f71da435417"
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        <link:footnote id="f_0099_000001" xlink:label="f_0099_000001" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Operating&#160;expenses&#160;paid by BFA under the Investment Advisory Agreement exclude acquired fund fees and expenses, if any.</link:footnote>
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        <link:footnote id="f_0133_000206" xlink:label="f_0133_000206" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Operating&#160;expenses&#160;paid by BFA under the Investment Advisory Agreement exclude Acquired Fund Fees and Expenses, if any.</link:footnote>
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        <link:footnote id="f_0135_000212" xlink:label="f_0135_000212" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">The Fund has added this broad-based index in response to new regulatory requirements.</link:footnote>
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        <link:footnote id="f_0135_000213" xlink:label="f_0135_000213" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2027 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2027 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2027 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</link:footnote>
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        <link:footnote id="f_0137_000214" xlink:label="f_0137_000214" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Operating&#160;expenses&#160;paid by BFA under the Investment Advisory Agreement exclude Acquired Fund Fees and Expenses, if any.</link:footnote>
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        <link:footnote id="f_0137_000216" xlink:label="f_0137_000216" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">The Fund has added this broad-based index in response to new regulatory requirements.</link:footnote>
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          xlink:from="h_1945_2d7670c3_27c5_41a7_9ec3_a1ec07ba9d44"
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        <link:loc
          xlink:href="#h_1946_7efde757_d4a0_4678_b9d0_f8afccb059cb"
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        <link:footnote id="f_0137_000217" xlink:label="f_0137_000217" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Index returns through February 28, 2021 reflect the standard pricing variant of the ICE 2028 Maturity US Treasury Index, which utilized pricing as of 3pm. Index returns from March 1, 2021 through November 30, 2023 reflect the performance of the 4pm pricing variant of the ICE 2028 Maturity US Treasury Index. Index returns beginning on December 1, 2023 reflect the performance of the standard pricing variant of the ICE 2028 Maturity US Treasury Index, which now utilizes pricing as of 4pm, and resulted in the discontinuation of the 4pm pricing variant.</link:footnote>
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        <link:loc
          xlink:href="#h_1947_be783211_c360_40ff_b520_f763240098d5"
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        <link:footnote id="f_0139_000218" xlink:label="f_0139_000218" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Operating&#160;expenses&#160;paid by BFA under the Investment Advisory Agreement exclude Acquired Fund Fees and Expenses, if any.</link:footnote>
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        <link:footnote id="f_0139_000219" xlink:label="f_0139_000219" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">The amount rounded to 0.00%.</link:footnote>
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        <link:footnote id="f_0139_000220" xlink:label="f_0139_000220" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">The Fund has added this broad-based index in response to new regulatory requirements.</link:footnote>
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        <link:footnote id="f_0141_000222" xlink:label="f_0141_000222" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Operating&#160;expenses&#160;paid by BFA under the Investment Advisory Agreement exclude Acquired Fund Fees and Expenses, if any.</link:footnote>
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        <link:footnote id="f_0157_000001" xlink:label="f_0157_000001" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Operating&#160;expenses&#160;paid by BFA under the Investment Advisory Agreement exclude acquired fund fees and expenses, if any.</link:footnote>
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        <link:footnote id="f_0067_000001" xlink:label="f_0067_000001" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Operating&#160;expenses&#160;paid by BFA under the Investment Advisory Agreement exclude acquired fund fees and expenses, if any.</link:footnote>
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