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    <oef:ExpensesOverAssets
      contextRef="D20250531_20250531_S000018499Member_C000051321Member"
      decimals="4"
      id="h_24_ee802764_61fe_4921_a277_7d51cd3188cf"
      unitRef="pure">0.0137</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250531_20250531_S000018499Member_C000051319Member"
      decimals="4"
      id="h_25_4d4acb42_0ed0_4f67_8128_d2b373a47594"
      unitRef="pure">-0.0009</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="4"
      id="h_26_35df80f1_3a7f_436b_973f_ba194e63216a"
      unitRef="pure">-0.0009</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250531_20250531_S000018499Member_C000051321Member"
      decimals="4"
      id="h_27_026f0e3f_f93d_403f_9cf1_dcbaf91065da"
      unitRef="pure">-0.0008</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250531_20250531_S000018499Member_C000051319Member"
      decimals="4"
      id="h_28_c230b754_acc6_407f_ab89_ff4618f1b5c7"
      unitRef="pure">0.0151</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="4"
      id="h_29_0e9f2ff9_36bd_4b4f_8f6d_b3dd386315e1"
      unitRef="pure">0.0227</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250531_20250531_S000018499Member_C000051321Member"
      decimals="4"
      id="h_30_9e4ae9ac_83dd_4d1e_a480_0c7cf7262d00"
      unitRef="pure">0.0129</oef:NetExpensesOverAssets>
    <oef:ExpensesDeferredChargesTextBlock
      contextRef="D20250531_20250531_S000018499Member"
      id="t_25_0bdc286b_7fdd_5d17_0b18_d4d5dfa846ed">A contingent deferred sales charge (&#x201c;CDSC&#x201d;) of 1.00% is assessed on certain redemptions of Investor A Shares made within 18 months afterpurchase where no initial sales charge was paid at the time of purchase as part of an investment of $250,000 or more.</oef:ExpensesDeferredChargesTextBlock>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20250531_20250531_S000018499Member"
      id="t_38_53636d72_29d2_7bfe_afdf_3e73a39d7ecc">June 30, 2027</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees
      contextRef="D20250531_20250531_S000018499Member"
      id="t_26_67d58111_bfa1_2433_9e3a_e3905bec679e">The Total Annual Fund Operating Expenses do not correlate to the ratios of expenses to average net assets given in the Fund&#x2019;s most recentAnnual Financial Statements and Additional Information, which do not include Acquired Fund Fees and Expenses.</oef:ExpensesNotCorrelatedToRatioDueToAcquiredFundFees>
    <oef:ExpenseExampleHeading
      contextRef="D20250531_20250531_S000018499Member"
      id="t_8_2424a40b_e854_4aad_8a76_5b04040296fa"> Example: </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250531_20250531_S000018499Member"
      id="t_9_8d3933f9_cfd2_425a_9e75_6acee334ba8a"> &lt;div style="line-height: 10.695pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or lower, based on these assumptions your costs would be:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250531_20250531_S000018499Member_C000051319Member"
      decimals="INF"
      id="h_31_de87ba75_3564_486e_8c5f_fea2d46175f7"
      unitRef="USD">671</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250531_20250531_S000018499Member_C000051319Member"
      decimals="INF"
      id="h_32_cef93bb6_a9e7_40b2_ac82_238f3f3af854"
      unitRef="USD">995</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250531_20250531_S000018499Member_C000051319Member"
      decimals="INF"
      id="h_33_0b73c7aa_556a_4921_90aa_d5fc43762a14"
      unitRef="USD">1342</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250531_20250531_S000018499Member_C000051319Member"
      decimals="INF"
      id="h_34_454460bd_ff2d_47c2_b822_89724ed003cc"
      unitRef="USD">2318</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_35_e029ba22_9221_4f35_9eaa_162a2e612b34"
      unitRef="USD">330</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_36_ce78a75e_8331_4e6e_9c57_d5e3e6156b2f"
      unitRef="USD">728</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_37_eb7f801e_06ab_4d16_965e_6d08cbe7d17b"
      unitRef="USD">1252</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_38_cba3c6f9_0267_4843_8cd6_07d36947c234"
      unitRef="USD">2500</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250531_20250531_S000018499Member_C000051321Member"
      decimals="INF"
      id="h_39_930f194f_5535_47f3_95f3_00c452c9f08a"
      unitRef="USD">131</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250531_20250531_S000018499Member_C000051321Member"
      decimals="INF"
      id="h_40_ea50aef8_fc59_4437_843f_791f7d297ed4"
      unitRef="USD">426</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250531_20250531_S000018499Member_C000051321Member"
      decimals="INF"
      id="h_41_4f2f8475_b914_4604_9f4e_60cd089f8aac"
      unitRef="USD">742</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250531_20250531_S000018499Member_C000051321Member"
      decimals="INF"
      id="h_42_93739913_d315_4e46_8c17_6e9642259654"
      unitRef="USD">1639</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionByYearCaption
      contextRef="D20250531_20250531_S000018499Member"
      id="t_24_c7b699c0_5473_de88_5200_bd08faec3a6a">You would pay the following expenses if you did not redeem your shares:</oef:ExpenseExampleNoRedemptionByYearCaption>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_43_27c57dfd_4de2_401b_b957_06615ce96cdd"
      unitRef="USD">230</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_44_b33f61da_a478_474f_a1a8_0608c7b16cc4"
      unitRef="USD">728</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_45_b99d7adb_3540_4aec_9cb0_af0977a8925a"
      unitRef="USD">1252</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="D20250531_20250531_S000018499Member_C000051320Member"
      decimals="INF"
      id="h_46_19b0eb8d_73db_4659_8c89_28a2a1013061"
      unitRef="USD">2500</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250531_20250531_S000018499Member"
      id="t_10_a666b683_cd19_4558_b2c3_a46f966cd8d9">  Portfolio Turnover:  </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250531_20250531_S000018499Member"
      id="t_11_f064edf0_a333_47d3_b2fb_cbb3add7263b"> &lt;div style="line-height: 10.695pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;81&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250531_20250531_S000018499Member"
      decimals="4"
      id="h_47_f80837aa_6130_46db_a6cb_956ba533ddfc"
      unitRef="pure">0.81</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250531_20250531_S000018499Member"
      id="t_27_41a078f2_d05f_fbaa_0900_3eefd9886ac2">Principal Investment Strategies of the Fund</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20250531_20250531_S000018499Member"
      id="t_13_b3ca82f5_01f1_4c08_8ff4_ae1da9cba722"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Under normal circumstances, the Fund invests at least 80% of its net assets (plus any borrowings for investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;purposes) in equity securities and related derivative instruments with similar economic characteristics. Investments in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives are counted toward the Fund&#x2019;s 80% policy to the extent that they provide investment exposure to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities included within that policy or to one or more market risk factors associated with such securities. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;seeks to achieve its investment objective by employing an event driven strategy, primarily investing in companies that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;have announced a material change or in companies that BlackRock expects to undergo a material change. A material &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;change that could impact the price of securities for purposes of the Fund&#x2019;s investment strategies is referred to herein &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;as a &#x201c;catalyst.&#x201d; The Fund focuses on identifying investments that have a sufficiently defined catalyst. These catalysts &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;span a broad spectrum and include, for example, announced mergers and acquisitions, spinoffs and split-offs, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;financial or strategic restructurings, management changes, synergistic acquisitions, as well as other transformative &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;events. The intended goal of the Fund is to profit when the price of a security changes to reflect more accurately the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;likelihood and potential impact of the occurrence, or non-occurrence, of the extraordinary event. This can be done by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;taking a long position in a security or other financial instrument that is believed to be underpriced or a short position in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a security or other financial instrument that is believed to be overpriced. The Fund generally maintains long positions &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;through direct positions in equity securities, but may also take long positions through the use of swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other derivative instruments. The Fund generally maintains short positions through the use of swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other derivative instruments, but may also take short positions directly. At times, the Fund may have significant short &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;positions in equity securities and equity-related instruments.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund normally invests in both U.S. and non-U.S. securities. Non-U.S. securities may be denominated in either U.S. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;dollars or foreign currencies. The Fund may invest in securities of issuers of any market capitalization.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund&#x2019;s investment in equity securities may include common stock, preferred stock, non-convertible preferred stock &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and depositary receipts. The Fund may gain exposure to equity securities through derivatives. The Fund may also &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;purchase securities convertible into common stock.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may invest up to 20% of its net assets (plus any borrowings for investment purposes) in fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities and related derivative instruments with similar economic characteristics. The Fund&#x2019;s investment in fixed-income&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; securities may include fixed and floating rate corporate bonds and municipal securities. The Fund may invest in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;debt securities of any credit quality, as determined by Fund management, which may include high yield securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(commonly called &#x201c;junk bonds&#x201d;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may invest in derivatives, including but not limited to, total return swaps (some of which may be referred to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;as contracts for difference), credit default swaps, futures, options and foreign exchange transactions, for hedging &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.695pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;purposes, as well as to enhance the return on its portfolio investments. There is no limit to the Fund&#x2019;s ability to invest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in derivatives, except as may be limited by requirements of the Investment Company Act of 1940, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;Investment Company Act&#x201d;), and at times the Fund may utilize derivatives to a significant extent.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may also invest in indexed and inverse securities.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;When consistent with the Fund&#x2019;s investment objective, the Fund&#x2019;s investments may include short-term investments &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;such as cash and cash equivalents, U.S. Government and agency securities, money market funds (including funds that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may be affiliated with or sponsored or managed by BlackRock), commercial paper, certificates of deposit and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;bank deposits and bankers&#x2019; acceptances.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may invest in securities of companies without an identified catalyst to hedge unwanted exposures to an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;industry or the market as a whole.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may engage in active and frequent trading of portfolio securities to achieve its primary investment strategies.&lt;/span&gt;&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_RiskLoseMoneyMember"
      id="t_50_604c6335_512c_7d83_4349_4a1be1151877">You may lose part or all of yourinvestment in the Fund or your investment may not perform as well as other similar investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_EquitySecuritiesRiskMember"
      id="t_51_43dfad21_cd80_8aaa_f6cb_c1c7725c3a03"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Stock markets are volatile. The price of equity securities fluctuates based on changes in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company&#x2019;s financial condition and overall market and economic conditions.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_EventDrivenStrategiesRiskMember"
      id="t_52_a565b639_aec3_bf33_cffb_dbc18e8e5d5c"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Event Driven Strategies Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014;The Fund may invest in event driven strategies, which entail investing in companies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;involved, or potentially involved, in significant corporate actions. Investment decisions may take into account &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;BlackRock&#x2019;s perceptions of the likelihood that an event or transaction will occur, the amount of time that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;process will take and the perceived expected value following the catalyst. The success of event driven trading &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;depends on the successful prediction of whether various catalyst events will occur or be consummated. If a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;proposed transaction appears likely not to be consummated or in fact is not consummated or is delayed, the market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;price of the securities purchased by the Fund may decline sharply and result in losses to the Fund.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may purchase securities at prices only slightly below the anticipated value to be paid or exchanged for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities in the proposed merger, exchange offer, cash tender offer or other similar transaction. The purchase &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;price to the Fund may be substantially above the prices at which such securities traded immediately prior to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;announcement of such merger, exchange offer, cash tender offer or other similar transaction. If the proposed &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;merger, exchange offer, cash tender offer or other similar transaction appears likely not to be consummated or in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fact is not consummated or is delayed, or if the value of a transaction is reduced, the market price of the security to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;be tendered or exchanged may, and likely will, decline sharply by an amount greater than the difference between the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund&#x2019;s purchase price and the anticipated consideration to be paid.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;In addition, where a security to be issued in a merger or exchange offer has been sold short in the expectation that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the short position will be covered by delivery of such security when issued, failure of the merger or exchange offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to be consummated may force the Fund to cover its short sale, with a resulting, and perhaps significant, loss.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;In addition, if BlackRock determines that the offer price for a security which is the subject of a tender offer is likely &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to be increased, either by the original bidder or by another party, the Fund may purchase securities above the offer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;price, thereby exposing the Fund to an even greater degree of risk of loss.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Where BlackRock determines that it is probable that a transaction will not be consummated, the Fund may sell the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities of the target company short, at times significantly below the announced tender or offering prices for the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities in the transaction. If the transaction, or another transaction, such as a &#x201c;defensive&#x201d; merger or a &#x201c;friendly&#x201d; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;tender offer, is consummated at the announced price or a higher price, the Fund may be forced to cover the short &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;position in the market at a higher price than the short sale price, with a resulting, and perhaps significant, loss.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The consummation of mergers, exchange offers, cash tender offers or other similar transactions can be prevented &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or delayed by a variety of factors. Transactions may also be contingent on certain contractual conditions precedent.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Offerors in tender or exchange offers customarily reserve the right to cancel such offers in a variety of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;circumstances. An exchange offer or a cash tender offer may be made for less than all of the outstanding securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of an issuer, with the provision that, if a greater number is tendered, securities will be accepted on a pro rata basis. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Thus, after the completion of the offer, and at a time when the market price of the securities has declined below its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cost, the Fund may have returned to it, and be forced to sell at a loss, a portion of the securities it tendered.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_DerivativesRisksMember"
      id="t_53_7f470ae0_950a_cc51_1ec0_dfb52b30e59e"> &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives may increase its costs, reduce the Fund&#x2019;s returns and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase volatility. Derivatives involve significant risks, including:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Leverage Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives can magnify the Fund&#x2019;s gains and losses. Relatively small market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements may result in large changes in the value of a derivatives position and can result in losses that greatly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exceed the amount originally invested.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some derivatives are more sensitive to interest rate changes and market price fluctuations than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The Fund could also suffer losses related to its derivatives positions as a result of unanticipated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;market movements, which losses are potentially unlimited. Finally, BlackRock may not be able to predict correctly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the direction of securities prices, interest rates and other economic factors, which could cause the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives positions to lose value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Derivatives are also subject to counterparty risk, which is the risk that the other party in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction will be unable or unwilling to fulfill its contractual obligation, and the related risks of having concentrated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure to such a counterparty.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult for the Fund to value accurately.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Operational Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The use of derivatives includes the risk of potential operational issues, including documentation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues, settlement issues, systems failures, inadequate controls and human error.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Legal Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The risk of insufficient documentation, insufficient capacity or authority of counterparty, or legality or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;enforceability of a contract.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Volatility and Correlation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Volatility is defined as the characteristic of a security, an index or a market to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuate significantly in price within a short time period. A risk of the Fund&#x2019;s use of derivatives is that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuations in their values may not correlate with the overall securities markets.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Valuation for derivatives may not be readily available in the market. Valuation may be more difficult &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in times of market turmoil since many investors and market makers may be reluctant to purchase complex &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;instruments or quote prices for them.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Hedging Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Hedges are sometimes subject to imperfect matching between the derivative and the underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security, and there can be no assurance that the Fund&#x2019;s hedging transactions will be effective. The use of hedging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may result in certain adverse tax consequences.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Certain aspects of the tax treatment of derivative instruments, including swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commodity-linked derivative instruments, are currently unclear and may be affected by changes in legislation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regulations or other legally binding authority. Such treatment may be less favorable than that given to a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment in an underlying asset and may adversely affect the timing, character and amount of income the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;realizes from its investments.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Risks Specific to Certain Derivatives Used by the Fund&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Forward Foreign Currency Exchange Contracts&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Forward foreign currency exchange transactions are OTC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;contracts to purchase or sell a specified amount of a specified currency or multinational currency unit at a price &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and future date set at the time of the contract. Forward foreign currency exchange contracts do not eliminate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuations in the value of non-U.S. securities but rather allow the Fund to establish a fixed rate of exchange for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a future point in time. This strategy can have the effect of reducing returns and minimizing opportunities for gain.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Futures &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Futures are standardized, exchange-traded contracts that obligate a purchaser to take delivery, and a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;seller to make delivery, of a specific amount of an asset at a specified future date at a specified price. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;primary risks associated with the use of futures contracts and options are: (a) the imperfect correlation between &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the change in market value of the instruments held by the Fund and the price of the futures contract or option; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(b) the possible lack of a liquid secondary market for a futures contract and the resulting inability to close a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;futures contract when desired; (c) losses caused by unanticipated market movements, which are potentially &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;unlimited; (d) the investment adviser&#x2019;s inability to predict correctly the direction of securities prices, interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;rates, currency exchange rates and other economic factors; and (e) the possibility that the counterparty will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;default in the performance of its obligations.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Options &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; An option is an agreement that, for a premium payment or fee, gives the option holder (the purchaser) &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the right but not the obligation to buy (a &#x201c;call option&#x201d;) or sell (a &#x201c;put option&#x201d;) the underlying asset (or settle for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cash in an amount based on an underlying asset, rate, or index) at a specified price (the &#x201c;exercise price&#x201d;) during &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a period of time or on a specified date. Investments in options are considered speculative. When the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;purchases an option, it may lose the total premium paid for it if the price of the underlying security or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;assets decreased, remained the same or failed to increase to a level at or beyond the exercise price (in the case &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.695pt; margin-left: 24pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of a call option) or increased, remained the same or failed to decrease to a level at or below the exercise price &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(in the case of a put option). If a put or call option purchased by the Fund were permitted to expire without being &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;sold or exercised, its premium would represent a loss to the Fund. To the extent that the Fund writes or sells an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;option, if the decline or increase in the underlying asset is significantly below or above the exercise price of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;written option, the Fund could experience a substantial loss.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Swaps&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Swap agreements, including total return swaps that may be referred to as contracts for difference, are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;two-party contracts entered into for periods ranging from a few days to more than one year. In a standard &#x201c;swap&#x201d; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction, two parties agree to exchange the value(s) or cash flow(s) of one asset for another over a certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;period of time. Swap agreements involve the risk that the party with whom the Fund has entered into the swap &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;will default on its obligation to pay the Fund and the risk that the Fund will not be able to meet its obligations to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;pay the other party to the agreement. Swap agreements may also involve the risk that there is an imperfect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;correlation between the return on the Fund&#x2019;s obligation to its counterparty and the return on the referenced &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;asset. In addition, swap agreements are subject to market and illiquidity risk, leverage risk and hedging risk.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_ShortSalesRiskMember"
      id="t_54_4601e521_026c_0a94_85dc_5ddbe2e44c00"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Short Sales Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Because making short sales in securities that it does not own exposes the Fund to the risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;associated with those securities, such short sales involve speculative exposure risk. The Fund will incur a loss as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;result of a short sale if the price of the security increases between the date of the short sale and the date on which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund replaces the security sold short.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_DebtSecuritiesRiskMember"
      id="t_55_c7f01b89_8786_a6db_544f_a93aabbda680"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Debt Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Debt securities, such as bonds, involve risks, such as credit risk, interest rate risk, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;extension risk, and prepayment risk, each of which are described in further detail below:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Credit Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Credit risk refers to the possibility that the issuer of a debt security (i.e., the borrower) will not be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;able to make payments of interest and principal when due. Changes in an issuer&#x2019;s credit rating or the market&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;perception of an issuer&#x2019;s creditworthiness may also affect the value of the Fund&#x2019;s investment in that issuer. The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;degree of credit risk depends on both the financial condition of the issuer and the terms of the obligation.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Interest Rate Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The market value of bonds and other fixed-income securities changes in response to interest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;rate changes and other factors. Interest rate risk is the risk that prices of bonds and other fixed-income securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;will increase as interest rates fall and decrease as interest rates rise.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may be subject to a greater risk of rising interest rates during a period of historically low interest rates. For &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;example, if interest rates increase by 1%, assuming a current portfolio duration of ten years, and all other factors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;being equal, the value of the Fund&#x2019;s investments would be expected to decrease by 10%. (Duration is a measure of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the price sensitivity of a debt security or portfolio of debt securities to relative changes in interest rates.) The &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;magnitude of these fluctuations in the market price of bonds and other fixed-income securities is generally greater &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for those securities with longer maturities. Fluctuations in the market price of the Fund&#x2019;s investments will not affect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;interest income derived from instruments already owned by the Fund, but will be reflected in the Fund&#x2019;s net asset &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;value. The Fund may lose money if short-term or long-term interest rates rise sharply in a manner not anticipated by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund management.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;To the extent the Fund invests in debt securities that may be prepaid at the option of the obligor (such as mortgage-backed&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; securities), the sensitivity of such securities to changes in interest rates may increase (to the detriment of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund) when interest rates rise. Moreover, because rates on certain floating rate debt securities typically reset &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;only periodically, changes in prevailing interest rates (and particularly sudden and significant changes) can be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;expected to cause some fluctuations in the net asset value of the Fund to the extent that it invests in floating rate &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;debt securities.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;These basic principles of bond prices also apply to U.S. Government securities. A security backed by the &#x201c;full faith &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and credit&#x201d; of the U.S. Government is guaranteed only as to its stated interest rate and face value at maturity, not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;its current market price. Just like other fixed-income securities, government-guaranteed securities will fluctuate in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;value when interest rates change.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;A general rise in interest rates has the potential to cause investors to move out of fixed-income securities on a large &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;scale, which may increase redemptions from funds that hold large amounts of fixed-income securities. Heavy &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;redemptions could cause the Fund to sell assets at inopportune times or at a loss or depressed value and could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;hurt the Fund&#x2019;s performance.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Extension Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; When interest rates rise, certain obligations will be paid off by the obligor more slowly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;anticipated, causing the value of these obligations to fall.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Prepayment Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; When interest rates fall, certain obligations will be paid off by the obligor more quickly than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;originally anticipated, and the Fund may have to invest the proceeds in securities with lower yields.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_DepositaryReceiptsRiskMember"
      id="t_56_8cfb574f_d52c_1cc9_e4fe_b46ad185c04f"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Depositary Receipts Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Depositary receipts are generally subject to the same risks as the foreign securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;that they evidence or into which they may be converted. In addition to investment risks associated with the &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div style="line-height: 10.695pt; margin-left: 12pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underlying issuer, depositary receipts expose the Fund to additional risks associated with the non-uniform terms &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;that apply to depositary receipt programs, credit exposure to the depository bank and to the sponsors and other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;parties with whom the depository bank establishes the programs, currency risk and the risk of an illiquid market for &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;depositary receipts. The issuers of unsponsored depositary receipts are not obligated to disclose information that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;is, in the United States, considered material. Therefore, there may be less information available regarding these &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers and there may not be a correlation between such information and the market value of the depositary &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;receipts. While depositary receipts provide an alternative to directly purchasing underlying foreign securities in their &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;respective markets and currencies, they continue to be subject to many of the risks associated with investing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;directly in foreign securities, including political, economic, and currency risk.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_EmergingMarketsRiskMember"
      id="t_57_a0995f98_4f8e_614f_4c4e_9839ba148450"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Emerging Markets Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Emerging markets are riskier than more developed markets because they tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;develop unevenly and may never fully develop. Investments in emerging markets may be considered speculative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;returns to U.S. investors. In addition, many emerging financial markets have far lower trading volumes and less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;liquidity than developed markets.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_ForeignSecuritiesRiskMember"
      id="t_58_565b8c99_8bdd_7b88_94e2_b723f4abcf91"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Foreign Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Foreign investments often involve special risks not present in U.S. investments that can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase the chances that the Fund will lose money. These risks include:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund generally holds its foreign securities and cash in foreign banks and securities depositories, which may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;be recently organized or new to the foreign custody business and may be subject to only limited or no regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;oversight.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Changes in foreign currency exchange rates can affect the value of the Fund&#x2019;s portfolio.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The economies of certain foreign markets may not compare favorably with the economy of the United States with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;respect to such issues as growth of gross national product, reinvestment of capital, resources and balance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;payments position.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The governments of certain countries, or the U.S. Government with respect to certain countries, may prohibit or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;impose substantial restrictions through capital controls and/or sanctions on foreign investments in the capital &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;markets or certain industries in those countries, which may prohibit or restrict the ability to own or transfer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;currency, securities, derivatives or other assets.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Many foreign governments do not supervise and regulate stock exchanges, brokers and the sale of securities to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the same extent as does the United States and may not have laws to protect investors that are comparable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;U.S. securities laws.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Settlement and clearance procedures in certain foreign markets may result in delays in payment for or delivery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities not typically associated with settlement and clearance of U.S. investments.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund&#x2019;s claims to recover foreign withholding taxes may not be successful, and if the likelihood of recovery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign withholding taxes materially decreases, due to, for example, a change in tax regulation or approach in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign country, accruals in the Fund&#x2019;s net asset value for such refunds may be written down partially or in full, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;which will adversely affect the Fund&#x2019;s net asset value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_HighPortfolioTurnoverRiskMember"
      id="t_59_b059cd06_c093_54ce_725f_91dca6feb404"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;High Portfolio Turnover Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund may engage in active and frequent trading of its portfolio securities. High &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio turnover (more than 100%) may result in increased transaction costs to the Fund, including brokerage &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commissions, dealer mark-ups and other transaction costs on the sale of the securities and on reinvestment in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The sale of Fund portfolio securities may result in the realization and/or distribution to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shareholders of higher capital gains or losses as compared to a fund with less active trading policies. These effects &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;of higher than normal portfolio turnover may adversely affect Fund performance.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_HighYieldBondsRiskMember"
      id="t_60_7dfea1a6_7684_093e_516e_baae55e09225"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;High Yield Bonds Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Although junk bonds generally pay higher rates of interest than investment grade bonds, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;junk bonds are high risk investments that are considered speculative and may cause income and principal losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the Fund.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_IlliquidInvestmentsRiskMember"
      id="t_61_333e0af1_e5a3_2429_cdc4_6dc29536bed9"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Illiquid Investments Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund may not acquire any illiquid investment if, immediately after the acquisition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund would have invested more than 15% of its net assets in illiquid investments. An illiquid investment is any &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment that the Fund reasonably expects cannot be sold or disposed of in current market conditions in seven &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;calendar days or less without the sale or disposition significantly changing the market value of the investment. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Liquid investments may become illiquid after purchase by the Fund, particularly during periods of market turmoil. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;There can be no assurance that a security or instrument that is deemed to be liquid when purchased will continue &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to be liquid for as long as it is held by the Fund, and any security or instrument held by the Fund may be deemed an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;illiquid investment pursuant to the Fund&#x2019;s liquidity risk management program. The Fund&#x2019;s illiquid investments may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;reduce the returns of the Fund because it may be difficult to sell the illiquid investments at an advantageous time &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or price. In addition, if the Fund is limited in its ability to sell illiquid investments during periods when shareholders &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt;  &lt;div style="line-height: 10.695pt; margin-left: 12pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are redeeming their shares, the Fund will need to sell liquid securities to meet redemption requests and illiquid &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities will become a larger portion of the Fund&#x2019;s holdings. An investment may be illiquid due to, among other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;things, the reduced number and capacity of traditional market participants to make a market in fixed-income &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities or the lack of an active trading market. To the extent that the Fund&#x2019;s principal investment strategies &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;involve derivatives or securities with substantial market and/or credit risk, the Fund will tend to have the greatest &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure to the risks associated with illiquid investments. Illiquid investments may be harder to value, especially in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;changing markets, and if the Fund is forced to sell these investments to meet redemption requests or for other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cash needs, the Fund may suffer a loss. This may be magnified in a rising interest rate environment or other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;circumstances where investor redemptions from fixed-income mutual funds may be higher than normal. In addition, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;when there is illiquidity in the market for certain securities, the Fund, due to limitations on illiquid investments, may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;be subject to purchase and sale restrictions.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_IndexedAndInverseSecuritiesRiskMember"
      id="t_62_3f43360b_7e76_b8de_5f1b_cf8e9d899778"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Indexed and Inverse Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Indexed and inverse securities provide a potential return based on a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;particular index of value or interest rates. The Fund&#x2019;s return on these securities will be subject to risk with respect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to the value of the particular index. These securities are subject to leverage risk and correlation risk. Certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;indexed and inverse securities have greater sensitivity to changes in interest rates or index levels than other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities, and the Fund&#x2019;s investment in such instruments may decline significantly in value if interest rates or index &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;levels move in a way Fund management does not anticipate.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_LeverageRiskMember"
      id="t_63_3d088b14_98e9_c9d7_a600_b23786a41555"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some transactions may give rise to a form of economic leverage. These transactions may include, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to meet the applicable requirements of the Investment Company Act and the rules thereunder. Increases and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;decreases in the value of the Fund&#x2019;s portfolio will be magnified when the Fund uses leverage.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_MarketRiskAndSelectionRiskMember"
      id="t_64_efa06801_04c0_693f_8c23_97aaf8eda6a2"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Market Risk and Selection Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Market risk is the risk that one or more markets in which the Fund invests will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;go down in value, including the possibility that the markets will go down sharply and unpredictably. The value of a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security or other asset may decline due to changes in general market conditions, economic trends or events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are not specifically related to the issuer of the security or other asset, or factors that affect a particular issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers, exchange, country, group of countries, region, market, industry, group of industries, sector or asset class. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Local, regional or global events such as war, acts of terrorism, the spread of infectious illness or other public health &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues like pandemics or epidemics, recessions, or other events could have a significant impact on the Fund and its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investments. Selection risk is the risk that the securities selected by Fund management will underperform the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;markets, the relevant indices or the securities selected by other funds with similar investment objectives and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment strategies. This means you may lose money.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250531_20250531_S000018499Member_OperationalAndTechnologyRisksMember"
      id="t_65_6397a805_09ae_fddb_7bd0_3480eebd7942"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Operational and Technology Risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund is directly and indirectly susceptible to operational and technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks, including those related to human errors, processing errors, communication errors, systems failures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cybersecurity incidents, and the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), which may result in losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the Fund and its shareholders or may impair the Fund&#x2019;s operations. While the Fund&#x2019;s service providers are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;required to have appropriate operational, information security and cybersecurity risk management policies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;procedures, their methods of risk management may differ from those of the Fund. Operational and technology risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the issuers in which the Fund invests could also result in material adverse consequences for such issuers and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may cause the Fund&#x2019;s investments in such issuers to lose value.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt;&lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      id="t_28_a4654ca1_b90e_537f_ab31_5a411e5fbeda">Performance Information</oef:BarChartAndPerformanceTableHeading>
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      contextRef="D20250531_20250531_S000018499Member"
      id="t_29_52b1820e_fcd6_3641_d69b_a269f27ad6db"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Effective May 8, 2015, the Fund changed its investment strategies. Performance for the periods prior to May 8, 2015 &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shown below is based on the investment strategies utilized by the Fund at that time, which focused on establishing &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;long and short positions in a diversified portfolio of equity securities issued primarily by large cap companies located &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in the United States.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; risks of investing in the Fund. The table compares the Fund&#x2019;s performance to that of the Russell 1000&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;&#xae;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Index and the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;ICE BofA 3-Month U.S. Treasury Bill Index. To the extent that dividends and distributions have been paid by the Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the performance information for the Fund in the chart and table assumes reinvestment of the dividends and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;distributions. As with all such investments, past performance (before and after taxes) is not an indication of future&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; results. Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; However, the table includes all applicable fees and sales charges. If BlackRock and its affiliates had not waived or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;reimbursed certain Fund expenses during these periods, the Fund&#x2019;s returns would have been lower. Updated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;information on the Fund&#x2019;s performance, including its current net asset value, can be obtained by visiting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;www.blackrock.com or can be obtained by phone at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(800) 882-0052&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </oef:PerformanceNarrativeTextBlock>
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      id="t_36_69111751_0ae1_fd25_367a_ca916518356d">Investor A SharesANNUAL TOTAL RETURNSBlackRock Event Driven Equity FundAs of 12/31</oef:BarChartHeading>
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      unitRef="pure">0.0536</oef:BarChartYearToDateReturn>
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      id="t_49_3678baac_f6c1_efe3_379f_bc6264a2370a">For the periods ended 12/31/24Average Annual Total Returns</oef:PerformanceTableHeading>
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      id="h_48_bc0956a8_6ed9_475e_88b8_9b76198e4461"
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      id="h_49_cd97f90e_c704_4ca8_b0d0_fc96962924f6"
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      decimals="4"
      id="h_50_8d0fe046_f744_456d_a6ea_8878e535e6a0"
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      id="t_41_29168083_b668_b728_cac0_cb3d38ed6439">Actual after-tax returns depend on the investor&#x2019;s tax situation and maydiffer from those shown, and the after-tax returns shown are not relevant to investors who hold their shares throughtax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
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