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    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <dei:EntityInvCompanyType contextRef="Context_20251031_20251031" id="ixv-145129">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName contextRef="Context_20251031_20251031" id="ixv-145130">DIMENSIONAL INVESTMENT GROUP INC</dei:EntityRegistrantName>
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    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145132"> U.S. Large Company Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145133"> 
Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-1911">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
U.S. Large Company Portfolio (the &#x201c;Portfolio&#x201d;) seeks, as its investment objective, to approximate 
the total investment return of the S&amp;amp;P 500&lt;sup&gt;&#xae;&lt;/sup&gt; Index.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145134"> Fees 
and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-1919">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the 
fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may 
pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not 
reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145135">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145136">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145137"
      unitRef="pure">0.0006</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145138"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145139"
      unitRef="pure">0.0009</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="_20_"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145141"
      unitRef="pure">0.0008</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145142">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-2002">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This Example is meant to 
help you compare the cost of investing in the Portfolio with the cost of investing in other funds. The 
Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. The Example 
also assumes that your investment has a 5% return each year and that the Portfolio&#x2019;s operating 
expenses remain the same. The costs for the Portfolio reflect the net expenses of the Portfolio that 
result from the contractual expense waiver in the first year only. Although your actual costs may be 
higher or lower, based on these assumptions your costs whether you redeem or hold your shares would be: 
&lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145143"
      unitRef="usd">8</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145144"
      unitRef="usd">8</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145145"
      unitRef="usd">28</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145146"
      unitRef="usd">28</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145147"
      unitRef="usd">50</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145148"
      unitRef="usd">50</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145149"
      unitRef="usd">50</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145150"
      unitRef="usd">114</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145151"
      unitRef="usd">114</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145152"
      unitRef="usd">114</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145153">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-2029">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund 
generally pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns 
over&#x201d; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may 
result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected 
in Annual Fund Operating Expenses or in the Example, affect the Portfolio&#x2019;s performance. During 
the most recent fiscal year, the Portfolio's portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;5%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145154"
      unitRef="pure">0.05</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145155"> Principal 
Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-2039">&lt;p style="-sec-ix-redline:true;font-size:12.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The U.S. Large Company Portfolio generally 
invests in the stocks that comprise the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index in approximately the proportions they are represented in the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. The S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:12.0pt; font-family:Serif; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Index comprises a broad 
and diverse &lt;/span&gt;&lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:12.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;group 
of stocks. For the Portfolio, Dimensional Fund Advisors LP (the &#x201d;Advisor&#x201d;) considers the 
stocks that comprise the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Index 
to be those of large companies. Under normal market conditions, at least 95% of the Portfolio&#x2019;s 
net assets will be invested in the stocks that comprise the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. As a non-fundamental policy, under normal circumstances, the Portfolio will invest at least 80% 
of its net assets in securities of large U.S. companies.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:12.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Ordinarily, 
portfolio companies will not be sold except to reflect additions or deletions of the companies that comprise 
the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Index, including as a 
result of mergers, reorganizations and similar transactions and, to the extent necessary, to provide 
cash to pay redemptions of the U.S. Large Company Portfolio&#x2019;s shares. Given the impact on prices 
of securities affected by the reconstitution of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index around the time of a reconstitution date, the Portfolio may purchase or sell securities that may 
be impacted by the reconstitution before or after the reconstitution date of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. In seeking to approximate the total investment return of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index, the Advisor may also adjust the representation of securities in the Portfolio after considering 
such securities&#x2019; characteristics and other factors the Advisor determines to be appropriate.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:12.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
U.S. Large Company Portfolio may purchase or sell futures contracts and options on futures contracts 
for U.S. equity securities and indices to increase or decrease equity market exposure based on actual 
or expected cash inflows to or outflows from the Portfolio.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The U.S. Large Company 
Portfolio may lend its portfolio securities to generate additional income.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
U.S. Large Company Portfolio intends to be &#x201c;diversified,&#x201d; as defined in the Investment Company 
Act of 1940, as amended (the &#x201c;1940 Act&#x201d;), to the extent that the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index is diversified. The Portfolio may become &#x201c;non-diversified&#x201d; as defined in the 1940 Act 
solely as a result of a change in relative market capitalization or index weighting of one or more constituents 
of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Index. Should the Portfolio 
become &#x201c;non-diversified,&#x201d; it will no longer be required to meet certain diversification requirements 
under the 1940 Act and may invest a greater portion of its assets in securities of a small group of issuers 
or in any one individual issuer than can a diversified fund. Shareholder approval will not be sought 
when the Portfolio crosses from diversified to non-diversified status solely due to a change in relative 
market capitalization or index weighting of one or more constituents of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;About the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index: The Standard &amp;amp; Poor&#x2019;s 500 Composite Stock Price Index&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
is market capitalization weighted (adjusted for free float). Its performance is usually cyclical because 
it reflects periods when stock prices generally rise or fall. For information concerning S&amp;amp;P Global 
Ratings, a division of The McGraw Hill Companies (&#x201c;S&amp;amp;P&#x201d;), and disclaimers of S&amp;amp;P 
with respect to the U.S. Large Company Portfolio, see &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;&#x201c;Standard &amp;amp; Poor&#x2019;s&#x2014;Information 
and Disclaimers.&#x201d;&lt;/span&gt;&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_PrincipalRisks2_S000001014Summary1Member"
      id="ixv-2101">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x5x2"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money. 
An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency. The following is a description of principal 
risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_RiskLoseMoneyMember_S000001014Summary1Member"
      id="ixv-145156">Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_RiskNotInsuredMember_S000001014Summary1Member"
      id="ixv-145157">An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_EquityMarketRisk2_S000001014Summary1Member"
      id="ixv-2107">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment approach cannot guarantee a profit. 
Economic, market, environmental, political, and issuer-specific conditions and events will cause the 
value of equity securities, and a fund that owns them, to rise or fall. Stock markets are volatile, with 
periods of rising prices and periods of falling prices.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_DerivativesRisk2_S000001014Summary1Member"
      id="ixv-2112">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, such as futures contracts, and options thereon, 
whose value is derived from that of other assets, rates or indices. The use of derivatives for non-hedging 
purposes may be considered to carry more risk than other types of investments. When a fund uses derivatives, 
the fund will be directly exposed to the risks of those derivatives. Derivative instruments are subject 
to a number of risks including counterparty, liquidity, interest rate, market, credit and management 
risks, as well as difficulties with respect to valuation. Changes in the value of a derivative may not 
correlate perfectly with the underlying asset, rate or index, and a fund could lose more than the principal 
amount invested. &lt;/span&gt;&lt;/p&gt;

</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_Non-DiversificationRisk2_S000001014Summary1Member"
      id="ixv-2120">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Non-Diversification Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;In 
seeking to approximate the total investment return of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index, the Portfolio may become non-diversified as a result of a change in relative market capitalization 
or index weighting of one or more constituents of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. If the Portfolio becomes non-diversified, a change in the value of one or a few issuers&#x2019; 
securities will therefore affect the value of the Portfolio more than if it was a diversified fund. This 
may increase the Portfolio&#x2019;s volatility and cause the performance of a relatively small number 
of issuers to have a greater impact on the Portfolio&#x2019;s performance.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_SecuritiesLendingRisk2_S000001014Summary1Member"
      id="ixv-2131">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Securities lending involves 
the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, 
a fund may lose money and there may be a delay in recovering the loaned securities. A fund could also 
lose money if it does not recover the securities and/or the value of the collateral falls, including 
the value of investments made with cash collateral. Securities lending also may have certain adverse 
tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_OperationalRisk2_S000001014Summary1Member"
      id="ixv-2135">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, system changes, faults 
in communication, and failures in systems, technology, or processes, and the use of artificial intelligence 
and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances are outside a fund&#x2019;s 
or its advisor&#x2019;s control, including instances at third parties. A fund and its advisor seek to 
reduce these operational risks through controls and procedures. However, measures that seek to reduce 
these operational risks through controls and procedures may not address every possible risk and may be 
inadequate to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_CyberSecurityRisk2_S000001014Summary1Member"
      id="ixv-2140">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber 
Security Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; 
use of internet, technology and information systems may expose the fund to potential risks linked to 
cyber security breaches of those technological or information systems. Cyber security breaches, amongst 
other things, could allow an unauthorized party to gain access to proprietary information, customer data, 
or fund assets, or cause the fund and/or its service providers to suffer data corruption or lose operational 
functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145158"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-2150">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The Portfolio&#x2019;s past performance (before and after taxes) is not an indication of 
future results. Updated performance information for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes. 
Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown 
in the table. In addition, the after-tax returns shown are not relevant to investors who hold shares 
of the Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145159">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145160"> The Portfolio&#x2019;s past performance (before and after taxes) is not an indication of 
future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145161">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145162">The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145163">In addition, the after-tax returns shown are not relevant to investors who hold shares 
of the Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145164">U.S. 
Large Company Portfolio&#x2005;Institutional Class Shares &#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      id="ixv-145165">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      id="ixv-145166">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145167"
      unitRef="pure">0.2055</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      id="ixv-145168">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145169"
      unitRef="pure">-0.1961</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      id="ixv-145170">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145171">Annualized Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary1Member"
      id="ixv-145172">Return Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145173"
      unitRef="pure">0.1776</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145174"
      unitRef="pure">0.1433</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145175"
      unitRef="pure">0.1475</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      id="ixv-145176">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145177"
      unitRef="pure">0.1745</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145178"
      unitRef="pure">0.1331</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145179"
      unitRef="pure">0.1384</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      id="ixv-145180">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145181"
      unitRef="pure">0.1071</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145182"
      unitRef="pure">0.1124</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145183"
      unitRef="pure">0.1213</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_SP500Index31_S000001014Member_S000001014Summary1Member"
      id="_89_">S&amp;P 500&#xae; 
Index1</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary1Member"
      id="ixv-145185">(reflects 
no deduction for fees, expenses or taxes)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_SP500Index32_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145186"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_SP500Index32_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145187"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_SP500Index32_S000001014Member_S000001014Summary1Member"
      decimals="INF"
      id="ixv-145188"
      unitRef="pure">0.1482</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145189"> U.S. Large Company Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145190"> Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-15596">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
U.S. Large Company Portfolio (the &#x201c;Portfolio&#x201d;) seeks, as its investment objective, to approximate 
the total investment return of the S&amp;amp;P 500&lt;sup&gt;&#xae;&lt;/sup&gt; Index.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145191"> Fees 
and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-15604">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the 
fees and expenses you may pay if you buy, hold or sell ETF Class shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You 
may also incur usual and customary brokerage commissions when buying or selling the ETF Class shares 
of the Portfolio, which are not reflected in the table or Example that follows.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145192">Shareholder Fees (fees paid directly from your 
investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145193">Annual Fund Operating Expenses 
(expenses that you pay each                       year as a percentage of 
the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145194"
      unitRef="pure">0.0006</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_102_"
      unitRef="pure">0.0005</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145196"
      unitRef="pure">0.0011</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_104_"
      unitRef="pure">-0.0003</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145198"
      unitRef="pure">0.0008</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145199">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-15697">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This 
Example is meant to help you compare the cost of investing in the Portfolio's ETF Class shares with the 
cost of investing in other funds. The Example assumes that you invest $10,000 in the Portfolio's ETF 
Class shares for the time periods indicated. The Example also assumes that your investment has a 5% return 
each year and that the Portfolio&#x2019;s operating expenses remain the same. The costs for the Portfolio's 
ETF class shares reflect the net expenses of the Portfolio's ETF Class shares that result from the contractual 
expense waiver in the first year only. Although your actual costs may be higher or lower, based on these 
assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145200"
      unitRef="usd">8</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145201"
      unitRef="usd">8</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145202"
      unitRef="usd">32</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145203"
      unitRef="usd">32</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145204"
      unitRef="usd">59</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145205"
      unitRef="usd">59</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145206"
      unitRef="usd">59</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145207"
      unitRef="usd">138</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145208"
      unitRef="usd">138</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000268948Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145209"
      unitRef="usd">138</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145210">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-15724">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;A fund generally pays 
transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; 
its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher 
taxes when fund shares are held in a taxable account. These costs, which are not reflected in Annual 
Fund Operating Expenses or in &lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;the Example, affect the Portfolio&#x2019;s performance. During 
the most recent fiscal year, the Portfolio's portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;5%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="ixv-145211"
      unitRef="pure">0.05</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145212"> Principal 
Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-15739">&lt;p style="-sec-ix-redline:true;font-size:12.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The U.S. Large Company Portfolio generally 
invests in the stocks that comprise the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index in approximately the proportions they are represented in the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. The S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:12.0pt; font-family:Serif; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Index comprises a broad 
and diverse group of stocks. For the Portfolio, Dimensional Fund Advisors LP (the &#x201d;Advisor&#x201d;) 
considers the stocks that comprise the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index to be those of large companies. Under normal market conditions, at least 95% of the Portfolio&#x2019;s 
net assets will be invested in the stocks that comprise the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. As a non-fundamental policy, under normal circumstances, the Portfolio will invest at least 80% 
of its net assets in securities of large U.S. companies.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:12.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Ordinarily, 
portfolio companies will not be sold except to reflect additions or deletions of the companies that comprise 
the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Index, including as a 
result of mergers, reorganizations and similar transactions and, to the extent necessary, to provide 
cash to pay redemptions of the U.S. Large Company Portfolio&#x2019;s shares. Given the impact on prices 
of securities affected by the reconstitution of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index around the time of a reconstitution date, the Portfolio may purchase or sell securities that may 
be impacted by the reconstitution before or after the reconstitution date of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. In seeking to approximate the total investment return of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index, the Advisor may also adjust the representation of securities in the Portfolio after considering 
such securities&#x2019; characteristics and other factors the Advisor determines to be appropriate.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:12.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
U.S. Large Company Portfolio may purchase or sell futures contracts and options on futures contracts 
for U.S. equity securities and indices to increase or decrease equity market exposure based on actual 
or expected cash inflows to or outflows from the Portfolio.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The U.S. Large Company 
Portfolio may lend its portfolio securities to generate additional income.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
U.S. Large Company Portfolio intends to be &#x201c;diversified,&#x201d; as defined in the Investment Company 
Act of 1940, as amended (the &#x201c;1940 Act&#x201d;), to the extent that the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index is diversified. The Portfolio may become &#x201c;non-diversified&#x201d; as defined in the 1940 Act 
solely as a result of a change in relative market capitalization or index weighting of one or more constituents 
of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Index. Should the Portfolio 
become &#x201c;non-diversified,&#x201d; it will no longer be required to meet certain diversification requirements 
under the 1940 Act and may invest a greater portion of its assets in securities of a small group of issuers 
or in any one individual issuer than can a diversified fund. Shareholder approval will not be sought 
when the Portfolio crosses from diversified to non-diversified status solely due to a change in relative 
market capitalization or index weighting of one or more constituents of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;About the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index: The Standard &amp;amp; Poor&#x2019;s 500 Composite Stock Price Index&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
is market capitalization weighted (adjusted for free float). Its performance is usually cyclical because 
it reflects periods when stock prices generally rise or fall. For information concerning S&amp;amp;P Global 
Ratings, a division of The McGraw Hill Companies (&#x201c;S&amp;amp;P&#x201d;), and disclaimers of S&amp;amp;P 
with respect to the U.S. Large Company Portfolio, see &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;&#x201c;Standard &amp;amp; Poor&#x2019;s&#x2014;Information 
and Disclaimers.&#x201d;&lt;/span&gt;&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_PrincipalRisks2_S000001014Summary14Member"
      id="ixv-15795">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x5x3"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money. 
An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency. The following is a description of principal 
risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_RiskLoseMoneyMember_S000001014Summary14Member"
      id="ixv-145213">Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_RiskNotInsuredMember_S000001014Summary14Member"
      id="ixv-145214">An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_EquityMarketRisk2_S000001014Summary14Member"
      id="ixv-15801">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment approach cannot guarantee a profit. 
Economic, market, environmental, political, and issuer-specific conditions and events will cause the 
value of equity securities, and a fund that owns them, to rise or fall. Stock markets are volatile, with 
periods of rising prices and periods of falling prices.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_Non-DiversificationRisk2_S000001014Summary14Member"
      id="ixv-15806">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Non-Diversification Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;In seeking to approximate 
the total investment return of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index, the Portfolio may become non-diversified as a result of a change in relative market capitalization 
or index weighting of one or &lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;more constituents of the S&amp;amp;P 500&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;&lt;sup&gt;&#xae;&lt;/sup&gt;&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Index. If the Portfolio becomes non-diversified, a change in the value of one or a few issuers&#x2019; 
securities will therefore affect the value of the Portfolio more than if it was a diversified fund. This 
may increase the Portfolio&#x2019;s volatility and cause the performance of a relatively small number 
of issuers to have a greater impact on the Portfolio&#x2019;s performance.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_DerivativesRisk2_S000001014Summary14Member"
      id="ixv-15823">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, 
such as futures contracts, and options thereon, whose value is derived from that of other assets, rates 
or indices. The use of derivatives for non-hedging purposes may be considered to carry more risk than 
other types of investments. When a fund uses derivatives, the fund will be directly exposed to the risks 
of those derivatives. Derivative instruments are subject to a number of risks including counterparty, 
liquidity, interest rate, market, credit and management risks, as well as difficulties with respect to 
valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, 
rate or index, and a fund could lose more than the principal amount invested. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_SecuritiesLendingRisk2_S000001014Summary14Member"
      id="ixv-15827">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Securities lending involves 
the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, 
a fund may lose money and there may be a delay in recovering the loaned securities. A fund could also 
lose money if it does not recover the securities and/or the value of the collateral falls, including 
the value of investments made with cash collateral. Securities lending also may have certain adverse 
tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_OperationalRisk2_S000001014Summary14Member"
      id="ixv-15831">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, system changes, faults 
in communication, and failures in systems, technology, or processes, and the use of artificial intelligence 
and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances are outside a fund&#x2019;s 
or its advisor&#x2019;s control, including instances at third parties. A fund and its advisor seek to 
reduce these operational risks through controls and procedures. However, measures that seek to reduce 
these operational risks through controls and procedures may not address every possible risk and may be 
inadequate to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_CyberSecurityRisk2_S000001014Summary14Member"
      id="ixv-15836">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber 
Security Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; 
use of internet, technology and information systems may expose the fund to potential risks linked to 
cyber security breaches of those technological or information systems. Cyber security breaches, amongst 
other things, could allow an unauthorized party to gain access to proprietary information, customer data, 
or fund assets, or cause the fund and/or its service providers to suffer data corruption or lose operational 
functionality.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The following is a description of additional principal risks 
of investing in the ETF Class shares of the Portfolio, due to the shares being listed and traded on a 
national securities exchange.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_MarketTradingRisk2_S000001014Summary14Member"
      id="ixv-15842">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Market Trading 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Active trading markets for the ETF Class shares may not be 
developed or maintained by market makers or authorized participants. Authorized participants are not 
obligated to make a market in the ETF Class shares or to submit purchase or redemption orders for creation 
units, which may widen bid-ask spreads. Trading in shares on an exchange may be halted in certain circumstances. 
There can be no assurance that the requirements of the listing exchange necessary to maintain the listing 
of the ETF Class shares will continue to be met. Additionally, in stressed market conditions, the market 
for the ETF Class shares may become less liquid in response to deteriorating liquidity in the markets 
for the fund&#x2019;s portfolio holdings, which may cause a significant variance in the market price of 
the ETF Class shares and their underlying value as well as an increase in the ETF Class shares&#x2019; 
bid-ask spread.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_PremiumDiscountRisk2_S000001014Summary14Member"
      id="ixv-15847">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Premium/Discount Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The net asset value (&#x201c;NAV&#x201d;) of the ETF Class shares and the value 
of your investment may fluctuate. Disruptions to creations and redemptions or the market price of a fund&#x2019;s 
holdings, the existence of extreme market volatility or potential lack of an active trading market for 
shares may widen bid-ask spreads and result in shares trading at a significant premium or discount to 
NAV. If a shareholder purchases shares at a time when the market price is at a premium to the NAV or 
sells shares at a time when the market price is at a discount to the NAV, the shareholder may sustain 
losses.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145215"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-15857">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The ETF Class shares 
of the Portfolio are a new class of shares for which performance information is not available, and therefore, 
for periods prior to the inception of the ETF Class shares, the bar chart and table show performance 
information for the Institutional Class shares of the &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Portfolio, a mutual fund class of shares of the Portfolio 
not offered in this Prospectus. Returns of the ETF Class shares of the Portfolio may vary from the returns 
of the Institutional Class shares due to differences in expenses. The bar chart shows the changes in 
performance of the Institutional Class shares of the Portfolio from year to year. The table illustrates 
how annualized returns of the Institutional Class shares of the Portfolio for certain periods, both before 
and after taxes,&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;compare with those of a broad 
measure of market performance. The Portfolio&#x2019;s past performance (before and after taxes) is not 
an indication of future results. Updated performance information for the Portfolio can be obtained by 
visiting https://www.dimensional.com/us-en/funds.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The after-tax returns 
presented in the table for the Portfolio are calculated using the historical highest individual federal 
marginal income tax rates and do not reflect the impact of state and local taxes.  Actual after-tax returns 
depend on an investor&#x2019;s tax situation and may differ from those shown in the table.  In addition, 
the after-tax returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged 
arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145216">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The ETF Class shares 
of the Portfolio are a new class of shares for which performance information is not available, and therefore, 
for periods prior to the inception of the ETF Class shares, the bar chart and table show performance 
information for the Institutional Class shares of the Portfolio, a mutual fund class of shares of the Portfolio 
not offered in this Prospectus. Returns of the ETF Class shares of the Portfolio may vary from the returns 
of the Institutional Class shares due to differences in expenses. The bar chart shows the changes in 
performance of the Institutional Class shares of the Portfolio from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145218"> The Portfolio&#x2019;s past performance (before and after taxes) is not 
an indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145219">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145220">The after-tax returns 
presented in the table for the Portfolio are calculated using the historical highest individual federal 
marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145221">In addition, 
the after-tax returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged 
arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145222">U.S. 
Large Company Portfolio&#x2005;Institutional Class Shares1 
&#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary14Member"
      id="ixv-145223">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary14Member"
      id="ixv-145224">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_156_"
      unitRef="pure">0.2055</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary14Member"
      id="ixv-145226">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_159_"
      unitRef="pure">-0.1961</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary14Member"
      id="ixv-145228">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="ixv-145229">Annualized Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002765Member_S000001014Member_S000001014Summary14Member"
      id="_163_">Return Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_164_"
      unitRef="pure">0.1776</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_165_"
      unitRef="pure">0.1433</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_166_"
      unitRef="pure">0.1475</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      id="_167_">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_168_"
      unitRef="pure">0.1745</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_169_"
      unitRef="pure">0.1331</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_170_"
      unitRef="pure">0.1384</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      id="_171_">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_172_"
      unitRef="pure">0.1071</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_173_"
      unitRef="pure">0.1124</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002765Member_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_174_"
      unitRef="pure">0.1213</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_SP500Index341_S000001014Member_S000001014Summary14Member"
      id="_175_">S&amp;P 500&#xae; 
Index2</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001014Member_S000001014Summary14Member"
      id="_176_">(reflects 
no deduction for fees, expenses or taxes)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_SP500Index342_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_177_"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_SP500Index342_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_178_"
      unitRef="pure">0.1442</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_SP500Index342_S000001014Member_S000001014Summary14Member"
      decimals="INF"
      id="_179_"
      unitRef="pure">0.1482</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145247"> DFA International Value Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145248"> 
Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-31987">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the DFA International Value Portfolio (the &#x201c;Portfolio&#x201d;) is to achieve 
long-term capital appreciation. The DFA International Value Portfolio is a Feeder Portfolio and pursues 
its objective by investing substantially all of its assets in its corresponding Master Fund, The DFA 
International Value Series (the &#x201c;DFA International Value Series&#x201d; or the &#x201c;Series&#x201d;) 
of The DFA Investment Trust Company (the &#x201c;Trust&#x201d;), which has the same investment objective 
and policies as the Portfolio.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145249"> Fees and Expenses of the 
Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-31994">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the fees and expenses 
you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may pay other fees, such 
as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table 
and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145250">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145251">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="_187_"
      unitRef="pure">0.0045</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="_188_"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="_189_"
      unitRef="pure">0.0048</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="_190_"
      unitRef="pure">-0.0020</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="_191_"
      unitRef="pure">0.0028</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145257">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-32076">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This 
Example is meant to help you compare the cost of investing in the Portfolio with the cost of investing 
in other funds. The Example reflects the aggregate annual operating expenses of the Portfolio and its 
portion of the expenses of the Series. The Example assumes that you invest $10,000 in the Portfolio for 
the time periods indicated. The Example also assumes that your investment has a 5% return each year and 
that the Portfolio&#x2019;s operating expenses remain the same. Although your actual costs may be higher 
or lower, based on these assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145258"
      unitRef="usd">29</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145259"
      unitRef="usd">29</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145260"
      unitRef="usd">90</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145261"
      unitRef="usd">90</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145262"
      unitRef="usd">157</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145263"
      unitRef="usd">157</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145264"
      unitRef="usd">157</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145265"
      unitRef="usd">356</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145266"
      unitRef="usd">356</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145267"
      unitRef="usd">356</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145268">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-32103">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;A fund generally pays 
transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; 
its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher 
taxes when fund shares are held in a taxable account. These costs, which are not reflected in Annual 
Fund Operating Expenses or in &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;the Example, affect the Portfolio&#x2019;s performance. During 
the most recent fiscal year, the Series' portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;13%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145269"
      unitRef="pure">0.13</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145270"> Principal 
Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-32118">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The DFA International Value Portfolio 
invests substantially all of its assets in the DFA International Value Series. To achieve the Portfolio&#x2019;s 
and Series&#x2019; investment objectives, Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) implements 
an integrated investment approach that combines research, portfolio design, portfolio management, and 
trading functions. As further described below, the Series&#x2019; design emphasizes long-term drivers 
of expected returns identified by the Advisor&#x2019;s research, while balancing risk through broad diversification 
across companies, sectors, and countries. The Advisor&#x2019;s portfolio management and trading processes 
further balance those long-term drivers of expected returns with shorter-term drivers of expected returns 
and trading costs.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The DFA International Value Series is designed to purchase 
securities of large non-U.S. companies in countries with developed markets that the Advisor determines 
to be lower relative price stocks. A company&#x2019;s market capitalization is the number of its shares 
outstanding times its price per share. Under a market capitalization weighted approach, companies with 
higher market capitalizations generally represent a larger proportion of the Series than companies with 
relatively lower market capitalizations. The Advisor may overweight certain stocks, including smaller 
companies, lower relative price stocks, and/or higher profitability stocks within the large-cap value 
segment of developed ex U.S. markets. An equity issuer is considered to have a low relative price (i.e., 
a value stock) primarily because it has a low price in relation to its book value. In assessing relative 
price, the Advisor may consider additional factors such as price to cash flow or price to earnings ratios. 
An equity issuer is considered to have high profitability because it has high earnings or profits from 
operations in relation to its book value or assets. The criteria the Advisor uses for assessing relative 
price and profitability are subject to change from time to time.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
DFA International Value Series intends to purchase securities of large companies associated with developed 
market countries that the Advisor has designated as approved markets. The Advisor determines the minimum 
market capitalization of a large company with respect to each country or region in which the Series invests. 
Based on market capitalization data as of December 31, 2025, for the Series, the market capitalization 
of a large company in any country or region in which the Series invests would be $1,852 million or above. 
This threshold will change due to market conditions.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Advisor may also increase 
or reduce the DFA International Value Series&#x2019; exposure to an eligible company, or exclude a company, 
based on shorter-term considerations, such as a company&#x2019;s price momentum and short-run reversals. 
In addition, the Advisor seeks to reduce trading costs using a flexible trading approach that looks for 
opportunities to participate in the available market liquidity, while managing turnover and explicit 
transaction costs.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The DFA International Value Series may gain exposure to companies 
associated with approved markets by purchasing equity securities in the form of depositary receipts, 
which may be listed or traded outside the issuer&#x2019;s domicile country. The Series and the DFA International 
Value Portfolio each may purchase or sell futures contracts and options on futures contracts for foreign 
or U.S. equity securities and indices to increase or decrease equity market exposure based on actual 
or expected cash inflows to or outflows from the Series or Portfolio. Because many of the Series&#x2019; 
and Portfolio&#x2019;s investments may be denominated in foreign currencies, the Series and the Portfolio 
may enter into foreign currency exchange transactions, including foreign currency forward contracts, 
in connection with the settlement of foreign securities or to transfer cash balances from one currency 
to another currency.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The DFA International Value Series may lend its portfolio 
securities to generate additional income.&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_PrincipalRisks2_S000001022Summary28Member"
      id="ixv-32125">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x15x4"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal 
Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money. An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The 
following is a description of principal risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_RiskLoseMoneyMember_S000001022Summary28Member"
      id="ixv-145271">Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_RiskNotInsuredMember_S000001022Summary28Member"
      id="ixv-145272">An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_EquityMarketRisk2_S000001022Summary28Member"
      id="ixv-32131">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of equity securities, and a &lt;/span&gt;&lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;fund that owns them, to rise or fall. Stock markets are volatile, with periods 
of rising prices and periods of falling prices.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_ForeignSecuritiesandCurrenciesRisk2_S000001022Summary28Member"
      id="ixv-32141">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign 
Securities and Currencies Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Foreign securities prices 
may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or 
(b) less regulated or liquid securities markets. Investors holding these securities may also be exposed 
to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. 
dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, 
changing its value against the U.S. dollar). The Series does not hedge foreign currency risk.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Foreign 
issuers may not be subject to uniform accounting, auditing and financial reporting standards and there 
may be less reliable and publicly available financial and other information about such issuers, as compared 
to U.S. issuers. A fund may have greater difficulty voting proxies, exercising shareholder rights, securing 
dividends and/or interest and obtaining information regarding corporate actions on a timely basis, pursuing 
legal remedies, and obtaining judgments with respect to foreign investments in foreign courts than with 
respect to domestic issuers in U.S. courts.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Depositary receipts are generally 
subject to the same risks as the foreign securities that they evidence or into which they may be converted. 
In addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered 
depositary receipts, are under no obligation to distribute shareholder communications to the holders 
of such receipts, or to pass through to them any voting rights with respect to the deposited securities. 
Depositary receipts that are not sponsored by the issuer may be less liquid and there may be less readily 
available public information about the issuer.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_GeographicFocusRisk2_S000001022Summary28Member"
      id="ixv-32148">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Geographic 
Focus Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;If a fund focuses its investments 
in securities of issuers located in a particular country or region, the fund may be subjected, to a greater 
extent than if its investments were less focused, to the risks of volatile economic cycles and/or conditions 
and developments that may be particular to that country or region, such as: adverse securities markets; 
adverse exchange rates; adverse social, political, regulatory, economic, business, environmental or other 
developments; or natural disasters.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_ValueInvestmentRisk2_S000001022Summary28Member"
      id="ixv-32153">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Value Investment 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Value stocks may perform differently from the market as a 
whole and an investment strategy purchasing these securities may cause a fund to at times underperform 
equity funds that use other investment strategies. Value stocks can react differently to political, economic, 
and industry developments than the market as a whole and other types of stocks. Value stocks also may 
underperform the market for long periods of time.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_ProfitabilityInvestmentRisk2_S000001022Summary28Member"
      id="ixv-32158">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Profitability 
Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; High relative profitability stocks may perform differently 
from the market as a whole and an investment strategy purchasing these securities may cause a fund to 
at times underperform equity funds that use other investment strategies.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_DerivativesRisk2_S000001022Summary28Member"
      id="ixv-32162">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, 
such as futures contracts, and options thereon, and foreign currency forward contracts, whose value is 
derived from that of other assets, rates or indices. The use of derivatives for non-hedging purposes 
may be considered to carry more risk than other types of investments. When a fund uses derivatives, the 
fund will be directly exposed to the risks of those derivatives. Derivative instruments are subject to 
a number of risks including counterparty, settlement, liquidity, interest rate, market, credit and management 
risks, as well as difficulties with respect to valuation. Changes in the value of a derivative may not 
correlate perfectly with the underlying asset, rate or index, and a fund could lose more than the principal 
amount invested. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_SecuritiesLendingRisk2_S000001022Summary28Member"
      id="ixv-32166">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Securities lending involves the risk that the borrower may fail to return the securities in a timely 
manner or at all. As a result, a fund may lose money and there may be a delay in recovering the loaned 
securities. A fund could also lose money if it does not recover the securities and/or the value of the 
collateral falls, including the value of investments made with cash collateral. Securities lending also 
may have certain adverse tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_OperationalRisk2_S000001022Summary28Member"
      id="ixv-32170">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, 
system changes, faults in communication, and failures in systems, technology, or processes, and the use 
of artificial intelligence and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances 
are outside a fund&#x2019;s or its advisor&#x2019;s control, including instances at third parties. A fund 
and its advisor seek to reduce these operational risks through controls and procedures. However, measures 
that seek to reduce these operational risks through controls and procedures may not address every possible 
risk and may be inadequate to address these risks.&lt;/span&gt;&lt;/p&gt;
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_CyberSecurityRisk2_S000001022Summary28Member"
      id="ixv-32178">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber Security Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A 
fund and its service providers&#x2019; use of internet, technology and information systems may expose 
the fund to potential risks linked to cyber security breaches of those technological or information systems. 
Cyber security breaches, amongst other things, could allow an unauthorized party to gain access to proprietary 
information, customer data, or fund assets, or cause the fund and/or its service providers to suffer 
data corruption or lose operational functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145273"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-32188">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The table also includes the performance of an additional index with a similar investment 
universe as the Portfolio. The Portfolio&#x2019;s past performance (before and after taxes) is not an 
indication of future results. Updated performance information for the Portfolio can be obtained by visiting 
https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The after-tax returns presented in the 
table for the Portfolio are calculated using the historical highest individual federal marginal income 
tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on 
an investor&#x2019;s tax situation and may differ from those shown in the table. In addition, the after-tax 
returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged arrangements, 
such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145274">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145275"> The Portfolio&#x2019;s past performance (before and after taxes) is not an 
indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145276">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145277">The after-tax returns presented in the 
table for the Portfolio are calculated using the historical highest individual federal marginal income 
tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145278">In addition, the after-tax 
returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged arrangements, 
such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145279">DFA 
International Value Portfolio&#x2005;Institutional Class Shares 
&#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      id="ixv-145280">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      id="ixv-145281">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145282"
      unitRef="pure">0.2220</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      id="ixv-145283">2020-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145284"
      unitRef="pure">-0.3198</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      id="ixv-145285">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145286">Annualized Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002776Member_S000001022Member_S000001022Summary28Member"
      id="ixv-145287">Return Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145288"
      unitRef="pure">0.4521</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145289"
      unitRef="pure">0.1593</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145290"
      unitRef="pure">0.1033</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      id="ixv-145291">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145292"
      unitRef="pure">0.4356</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145293"
      unitRef="pure">0.1478</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145294"
      unitRef="pure">0.0929</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      id="ixv-145295">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145296"
      unitRef="pure">0.2758</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145297"
      unitRef="pure">0.1256</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002776Member_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145298"
      unitRef="pure">0.0817</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_MSCIWorldexUSAValueIndexnetdividends383_S000001022Member_S000001022Summary28Member"
      id="ixv-145299">MSCI World ex USA Value Index (net 
dividends)</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001022Member_S000001022Summary28Member"
      id="ixv-145300">(reflects 
no deduction for fees, expenses or taxes on sales)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_MSCIWorldexUSAValueIndexnetdividends384_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145301"
      unitRef="pure">0.4223</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_MSCIWorldexUSAValueIndexnetdividends384_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145302"
      unitRef="pure">0.1394</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_MSCIWorldexUSAValueIndexnetdividends384_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145303"
      unitRef="pure">0.0916</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_MSCIWorldexUSAIndexnetdividends385_S000001022Member_S000001022Summary28Member"
      id="ixv-145304">MSCI World ex USA Index (net dividends)</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_MSCIWorldexUSAIndexnetdividends386_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145305"
      unitRef="pure">0.3185</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_MSCIWorldexUSAIndexnetdividends386_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145306"
      unitRef="pure">0.0946</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_MSCIWorldexUSAIndexnetdividends386_S000001022Member_S000001022Summary28Member"
      decimals="INF"
      id="ixv-145307"
      unitRef="pure">0.0855</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145308"> DFA Two-Year Fixed Income 
Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145309"> Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-58680">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the DFA Two-Year Fixed Income Portfolio (the &#x201c;Two-Year Portfolio&#x201d; 
or the &#x201c;Portfolio&#x201d;) is to maximize total returns consistent with preservation of capital. 
Total return is comprised of income and capital appreciation.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145310"> Fees 
and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-58687">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the 
fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may 
pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not 
reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145311">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145312">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145313"
      unitRef="pure">0.0014</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145314"
      unitRef="pure">0.0008</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145315"
      unitRef="pure">0.0022</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="_282_"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145317"
      unitRef="pure">0.0021</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145318">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-58770">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This 
Example is meant to help you compare the cost of investing in the Portfolio with the cost of investing 
in other funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. 
The Example also assumes that your investment has a 5% return each year and that the Portfolio&#x2019;s 
operating expenses remain the same. The costs for the Portfolio reflect the net expenses of the Portfolio 
that result from the contractual expense waiver in the first year only. Although your actual costs may 
be higher or lower, based on these assumptions your costs whether you redeem or hold your shares would 
be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145319"
      unitRef="usd">22</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145320"
      unitRef="usd">22</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145321"
      unitRef="usd">70</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145322"
      unitRef="usd">70</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145323"
      unitRef="usd">123</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145324"
      unitRef="usd">123</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145325"
      unitRef="usd">123</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145326"
      unitRef="usd">279</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145327"
      unitRef="usd">279</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145328"
      unitRef="usd">279</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145329">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-58797">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund 
generally pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns 
over&#x201d; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may 
result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected 
in Annual Fund Operating Expenses or in the Example, affect the Portfolio&#x2019;s performance. During 
the most recent fiscal year, the Portfolio's portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;69%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;
</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145330"
      unitRef="pure">0.69</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145331"> 
Principal Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-58810">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Two-Year Portfolio seeks to maximize total returns from a universe of high quality, U.S. issued, dollar-denominated 
fixed income securities maturing in three years or less from the date of settlement. The Portfolio may 
invest in U.S. government obligations, U.S. government agency obligations, dollar-denominated obligations 
of foreign issuers issued in the U.S., securities of domestic or foreign issuers denominated in U.S. 
dollars but not trading in the U.S., foreign government and agency obligations, bank obligations, including 
U.S. subsidiaries and branches of foreign banks, corporate obligations, commercial paper, repurchase 
agreements, money market funds and obligations of supranational organizations. The weighted average effective 
maturity of the Portfolio&#x2019;s investments will not exceed two years. The effective maturity adjusts 
the stated final maturity of a fixed income security for an actual or expected event such as a call, 
put, tender, mandatory early redemption, pre-refunding, coupon or interest rate reset, or other similar 
event. In making purchase decisions, if the expected term premium is greater for longer-term securities 
in the eligible maturity range, Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) will focus investment 
in the longer-term area, otherwise, the Portfolio will focus investment in the shorter-term area of the 
eligible maturity range. The Portfolio principally invests in certificates of deposit, commercial paper, 
bankers&#x2019; acceptances, notes and bonds. The fixed income securities in which the Portfolio invests 
are considered investment grade at the time of purchase (e.g., rated AAA to BBB- by S&amp;amp;P Global Ratings 
(&#x201c;S&amp;amp;P&#x201d;) or Fitch Ratings Ltd. (&#x201c;Fitch&#x201d;) or Aaa to Baa3 by Moody&#x2019;s Ratings 
(&#x201c;Moody&#x2019;s&#x201d;)). In addition, the Portfolio is authorized to invest more than 25% of its 
total assets in U.S. Treasury bonds, bills and notes, and obligations of federal agencies and instrumentalities.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;As 
a non-fundamental policy, under normal circumstances, the Two-Year Portfolio will invest at least 80% 
of its net assets in fixed income securities that mature within two years from the date of settlement.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Two-Year Portfolio may invest in futures contracts, options on futures contracts, and swaps. The Portfolio 
may use fixed income related futures and options contracts, swaps and other types of derivatives to hedge 
against changes in interest rates. To the extent that it invests in futures contracts and options thereon 
for other than bona fide hedging purposes, it will not purchase futures contracts or options thereon, 
if, as a result, more than 5% of its net assets would then consist of initial margin deposits and premiums 
required to establish such positions. The Portfolio may purchase or sell futures contracts and options 
on futures contracts, to hedge its interest rate exposure or for non-hedging purposes, such as a substitute 
for direct investment or to increase or decrease market exposure based on actual or expected cash inflows 
to or outflows from the Portfolio.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Two-Year Portfolio may lend its portfolio securities to 
generate additional income.&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_PrincipalRisks2_S000001026Summary52Member"
      id="ixv-58815">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x15x5"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money. 
An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency. The following is a description of principal 
risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_RiskLoseMoneyMember_S000001026Summary52Member"
      id="ixv-145332">Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_RiskNotInsuredMember_S000001026Summary52Member"
      id="ixv-145333">An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_MarketRisk2_S000001026Summary52Member"
      id="ixv-58821">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment approach cannot guarantee a profit. Economic, market, 
environmental, political, and issuer-specific conditions and events will cause the value of securities, 
and a fund that owns them, to rise or fall.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_IncomeRisk2_S000001026Summary52Member"
      id="ixv-58826">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Income 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Income risk is the risk that falling interest rates will cause 
a fund&#x2019;s income to decline because, among other reasons, the proceeds from maturing short-term 
securities in its portfolio may be reinvested in lower-yielding securities.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_CallRisk2_S000001026Summary52Member"
      id="ixv-58831">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Call Risk&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt;: &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Call 
risk is the risk that during periods of falling interest rates, an issuer will call or repay a higher-yielding 
fixed income security before its maturity date, forcing a fund to reinvest in fixed income securities 
with lower interest rates than the original obligations.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_InterestRateRisk2_S000001026Summary52Member"
      id="ixv-58836">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Interest 
Rate Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:AdvP3F2712; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Fixed income securities are subject to interest rate risk 
because the prices of fixed income securities tend to move in the opposite direction of interest rates. 
When interest rates rise, fixed income security prices fall. During periods of very low or negative interest 
rates, a fund may be subject to a greater risk of rising &lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;interest rates. When interest rates fall, fixed income security prices rise. In 
general, fixed income securities with longer maturities are more sensitive to changes in interest rates.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_CreditRisk2_S000001026Summary52Member"
      id="ixv-58846">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Credit Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Credit risk is the risk 
that the issuer of a security may be unable to make interest payments and/or repay principal when due. 
A downgrade to an issuer&#x2019;s credit rating or a perceived change in an issuer&#x2019;s financial strength 
may affect a security&#x2019;s value, and thus, impact the performance of a fund holding such securities. 
Government agency obligations have different levels of credit support and, therefore, different degrees 
of credit risk. Securities issued by agencies and instrumentalities of the U.S. Government that are supported 
by the full faith and credit of the United States, such as the Federal Housing Administration and Ginnie 
Mae, present little credit risk. Other securities issued by agencies and instrumentalities sponsored 
by the U.S. Government, that are supported only by the issuer&#x2019;s right to borrow from the U.S. Treasury, 
subject to certain limitations, and securities issued by agencies and instrumentalities sponsored by 
the U.S. Government that are sponsored by the credit of the issuing agencies, such as Freddie Mac and 
Fannie Mae, are subject to a greater degree of credit risk. U.S. government agency securities issued 
or guaranteed by the credit of the agency may still involve a risk of non-payment of principal and/or 
interest.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_ForeignSecuritiesandCurrenciesRisk2_S000001026Summary52Member"
      id="ixv-58851">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Securities and Currencies 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Foreign securities prices may decline or fluctuate because 
of: (a) economic or political actions of foreign governments, and/or (b) less regulated or liquid securities 
markets. Investors holding these securities may also be exposed to foreign currency risk (the possibility 
that foreign currency will fluctuate in value against the U.S. dollar or that a foreign government will 
convert, or be forced to convert, its currency to another currency, changing its value against the U.S. 
dollar).&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Foreign issuers may not be subject to uniform accounting, 
auditing and financial reporting standards and there may be less reliable and publicly available financial 
and other information about such issuers, as compared to U.S. issuers. A fund may have greater difficulty 
voting proxies, exercising shareholder rights, securing dividends and/or interest and obtaining information 
regarding corporate actions on a timely basis, pursuing legal remedies, and obtaining judgments with 
respect to foreign investments in foreign courts than with respect to domestic issuers in U.S. courts.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_ForeignGovernmentDebtRisk2_S000001026Summary52Member"
      id="ixv-58857">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Government Debt Risk&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt;: &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
risk that: (a) the governmental entity that controls the repayment of government debt may not be willing 
or able to repay the principal and/or to pay the interest when it becomes due, due to factors such as 
political considerations, the relative size of the governmental entity&#x2019;s debt position in relation 
to the economy, cash flow problems, insufficient foreign currency reserves, the failure to put in place 
economic reforms required by the International Monetary Fund or other multilateral agencies, and/or other 
national economic factors; (b) governments may default on their debt securities, which may require holders 
of such securities to participate in debt rescheduling; and (c) there is no legal or bankruptcy process 
by which defaulted government debt may be collected in whole or in part.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_DerivativesRisk2_S000001026Summary52Member"
      id="ixv-58862">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, 
such as swaps, futures contracts, and options thereon, whose value is derived from that of other assets, 
rates or indices. Derivatives can be used for hedging (attempting to reduce risk by offsetting one investment 
position with another) or non-hedging purposes. Hedging with derivatives may increase expenses, and there 
is no guarantee that a hedging strategy will work. While hedging can reduce or eliminate losses, it can 
also reduce or eliminate gains or cause losses if the market moves in a manner different from that anticipated 
by a fund or if the cost of the derivative outweighs the benefit of the hedge. The use of derivatives 
for non-hedging purposes may be considered to carry more risk than other types of investments. When a 
fund uses derivatives, the fund will be directly exposed to the risks of those derivatives. Derivative 
instruments are subject to a number of risks including counterparty, settlement, liquidity, interest 
rate, market, credit and management risks, as well as difficulties with respect to valuation. Changes 
in the value of a derivative may not correlate perfectly with the underlying asset, rate or index, and 
a fund could lose more than the principal amount invested. Additional risks are associated with the use 
of swaps including counterparty and credit risk (the risk that the other party to a swap agreement will 
not fulfill its contractual obligations, whether because of bankruptcy or other default) and liquidity 
risk (the possible lack of a secondary market for the swap agreement). Credit risk increases when a fund 
is the seller of swaps and counterparty risk increases when the fund is a buyer of swaps. In addition, 
where a fund is the seller of swaps, it may be required to liquidate portfolio securities at inopportune 
times in order to meet payment obligations. Swaps may be illiquid or difficult to value. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_LiquidityRisk2_S000001026Summary52Member"
      id="ixv-58866">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Liquidity Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Liquidity risk exists when 
particular portfolio investments are difficult to purchase or sell. To the extent that a fund holds illiquid 
investments, the fund&#x2019;s performance may be reduced due to an inability to sell the investments 
at opportune prices or times. Liquid portfolio investments may become illiquid or less liquid after &lt;/span&gt;&lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;purchase by a fund due to low trading volume, adverse investor perceptions, credit 
tightening and/or other market developments. Liquidity risk includes the risk that a fund will experience 
significant net redemptions at a time when it cannot find willing buyers for its portfolio securities 
or can only sell its portfolio securities at a material loss or at increased costs. Liquidity risk can 
be more pronounced in periods of market turmoil or in situations where ownership of shares of a fund 
are concentrated in one or a few investors. Investments that are illiquid or that trade in lower volumes 
may be more difficult to value. &lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_SecuritiesLendingRisk2_S000001026Summary52Member"
      id="ixv-58876">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities 
Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Securities lending involves the risk that the borrower may 
fail to return the securities in a timely manner or at all. As a result, a fund may lose money and there 
may be a delay in recovering the loaned securities. A fund could also lose money if it does not recover 
the securities and/or the value of the collateral falls, including the value of investments made with 
cash collateral. Securities lending also may have certain adverse tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_OperationalRisk2_S000001026Summary52Member"
      id="ixv-58880">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include 
human error, changes in personnel, system changes, faults in communication, and failures in systems, 
technology, or processes, and the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;). 
Various operational events or circumstances are outside a fund&#x2019;s or its advisor&#x2019;s control, 
including instances at third parties. A fund and its advisor seek to reduce these operational risks through 
controls and procedures. However, measures that seek to reduce these operational risks through controls 
and procedures may not address every possible risk and may be inadequate to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_CyberSecurityRisk2_S000001026Summary52Member"
      id="ixv-58885">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber Security Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service 
providers&#x2019; use of internet, technology and information systems may expose the fund to potential 
risks linked to cyber security breaches of those technological or information systems. Cyber security 
breaches, amongst other things, could allow an unauthorized party to gain access to proprietary information, 
customer data, or fund assets, or cause the fund and/or its service providers to suffer data corruption 
or lose operational functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145334"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-58895">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The table also includes the performance of an additional index with a similar investment 
universe as the Portfolio. The Portfolio&#x2019;s past performance (before and after taxes) is not an 
indication of future results. Updated performance information for the Portfolio can be obtained by visiting 
https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The after-tax returns presented in the 
table for the Portfolio are calculated using the historical highest individual federal marginal income 
tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on 
an investor&#x2019;s tax situation and may differ from those shown in the table. In addition, the after-tax 
returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged arrangements, 
such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145335">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145336"> The Portfolio&#x2019;s past performance (before and after taxes) is not an 
indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145337">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145338">The after-tax returns presented in the 
table for the Portfolio are calculated using the historical highest individual federal marginal income 
tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145339">In addition, the after-tax 
returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged arrangements, 
such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145340">DFA Two-Year 
Fixed Income Portfolio&#x2005;Institutional Class Shares &#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      id="ixv-145341">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      id="ixv-145342">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145343"
      unitRef="pure">0.0143</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      id="ixv-145344">2024-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145345"
      unitRef="pure">-0.0233</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      id="ixv-145346">2022-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145347">Annualized Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002780Member_S000001026Member_S000001026Summary52Member"
      id="ixv-145348">Return Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145349"
      unitRef="pure">0.0434</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145350"
      unitRef="pure">0.0213</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145351"
      unitRef="pure">0.0174</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      id="ixv-145352">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145353"
      unitRef="pure">0.0260</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145354"
      unitRef="pure">0.0099</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145355"
      unitRef="pure">0.0089</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      id="ixv-145356">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145357"
      unitRef="pure">0.0255</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145358"
      unitRef="pure">0.0113</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002780Member_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145359"
      unitRef="pure">0.0096</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_ICEBofA1-3YearUSCorporateGovernmentIndex3158_S000001026Member_S000001026Summary52Member"
      id="_357_">ICE BofA 1-3 Year US Corporate 
&amp; Government Index1</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001026Member_S000001026Summary52Member"
      id="ixv-145361">(reflects no deduction for 
fees, expenses or taxes)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_ICEBofA1-3YearUSCorporateGovernmentIndex3159_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145362"
      unitRef="pure">0.0531</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_ICEBofA1-3YearUSCorporateGovernmentIndex3159_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145363"
      unitRef="pure">0.0197</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_ICEBofA1-3YearUSCorporateGovernmentIndex3159_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145364"
      unitRef="pure">0.0210</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_BloombergUSAggregateBondIndex3160_S000001026Member_S000001026Summary52Member"
      id="ixv-145365">Bloomberg U.S. Aggregate Bond Index</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_BloombergUSAggregateBondIndex3161_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145366"
      unitRef="pure">0.0730</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_BloombergUSAggregateBondIndex3161_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145367"
      unitRef="pure">-0.0036</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_BloombergUSAggregateBondIndex3161_S000001026Member_S000001026Summary52Member"
      decimals="INF"
      id="ixv-145368"
      unitRef="pure">0.0201</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145369"> DFA Two-Year Government Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145370"> 
Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-59244">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the DFA Two-Year Government Portfolio (the &#x201c;Two-Year Government Portfolio&#x201d; 
or the &#x201c;Portfolio&#x201d;) is to maximize total returns available from the universe of debt obligations 
of the U.S. Government and U.S. government agencies consistent with the preservation of capital. Total 
return is comprised of income and capital appreciation.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145371"> Fees 
and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-59251">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the 
fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may 
pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not 
reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145372">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145373">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145374"
      unitRef="pure">0.0010</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145375"
      unitRef="pure">0.0006</oef:OtherExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="_377_"
      unitRef="pure">-0.0001</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145377"
      unitRef="pure">0.0017</oef:ExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145378">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-59329">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This 
Example is meant to help you compare the cost of investing in the Portfolio with the cost of investing 
in other funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. 
The Example also assumes that your investment has a 5% return each year and that the Portfolio&#x2019;s 
operating expenses remain the same. Although your actual costs may be higher or lower, based on these 
assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145379"
      unitRef="usd">17</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145380"
      unitRef="usd">17</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145381"
      unitRef="usd">55</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145382"
      unitRef="usd">55</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145383"
      unitRef="usd">96</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145384"
      unitRef="usd">96</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145385"
      unitRef="usd">96</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145386"
      unitRef="usd">217</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145387"
      unitRef="usd">217</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145388"
      unitRef="usd">217</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145389">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-59356">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund 
generally pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns 
over&#x201d; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may 
result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected 
in Annual Fund Operating Expenses or in the Example, affect the Portfolio&#x2019;s performance. During 
the most recent fiscal year, the Portfolio's portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;66%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145390"
      unitRef="pure">0.66</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145391"> Principal 
Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-59366">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Two-Year Government Portfolio seeks 
to maximize total returns from a universe of obligations of the U.S. Government and its agencies maturing 
in three years or less from the date of settlement. The weighted average &lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;effective maturity of the Portfolio&#x2019;s investments will not exceed two years. 
The effective maturity adjusts the stated final maturity of a fixed income security for an actual or 
expected event such as a call, put, tender, mandatory early redemption, pre-refunding, coupon or interest 
rate reset, or other similar event. In making purchase decisions, if the expected term premium is greater 
for longer-term securities in the eligible maturity range, Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) 
will focus investment in the longer-term area, otherwise, the Portfolio will focus investment in the 
shorter-term area of the eligible maturity range. The credit quality of the securities purchased by the 
Portfolio will be that of the U.S. Government or its agencies. The Portfolio also may enter into repurchase 
agreements backed by U.S. government securities. The Portfolio may also invest in money market funds. 
In addition, the Portfolio is authorized to invest more than 25% of its total assets in U.S. Treasury 
bonds, bills and notes, and obligations of federal agencies and instrumentalities.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;As 
a non-fundamental policy, under normal circumstances, the Two-Year Government Portfolio will invest at 
least 80% of its net assets in government securities that mature within two years from the date of settlement.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Two-Year Government Portfolio may invest in futures contracts, options on futures contracts, and swaps. 
The Portfolio may use fixed income related futures and options contracts, swaps and other types of derivatives 
to hedge against changes in interest rates. To the extent that it invests in futures contracts and options 
thereon for other than bona fide hedging purposes, it will not purchase futures contracts or options 
thereon, if, as a result, more than 5% of its net assets would then consist of initial margin deposits 
and premiums required to establish such positions. The Portfolio may purchase or sell futures contracts 
and options on futures contracts, to hedge its interest rate exposure or for non-hedging purposes, such 
as a substitute for direct investment or to increase or decrease market exposure based on actual or expected 
cash inflows to or outflows from the Portfolio.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Two-Year Government Portfolio 
may lend its portfolio securities to generate additional income.&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_PrincipalRisks2_S000001010Summary53Member"
      id="ixv-59376">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x25x5"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal 
Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money. An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The 
following is a description of principal risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_RiskLoseMoneyMember_S000001010Summary53Member"
      id="ixv-145392">Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_RiskNotInsuredMember_S000001010Summary53Member"
      id="ixv-145393">An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_MarketRisk2_S000001010Summary53Member"
      id="ixv-59382">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of securities, and a fund that owns them, to rise or fall.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_IncomeRisk2_S000001010Summary53Member"
      id="ixv-59387">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Income Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Income risk is the risk 
that falling interest rates will cause a fund&#x2019;s income to decline because, among other reasons, 
the proceeds from maturing short-term securities in its portfolio may be reinvested in lower-yielding 
securities.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_InterestRateRisk2_S000001010Summary53Member"
      id="ixv-59392">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Interest Rate Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:AdvP3F2712; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Fixed income securities are subject to interest rate risk because the prices of 
fixed income securities tend to move in the opposite direction of interest rates. When interest rates 
rise, fixed income security prices fall. During periods of very low or negative interest rates, a fund 
may be subject to a greater risk of rising interest rates. When interest rates fall, fixed income security 
prices rise. In general, fixed income securities with longer maturities are more sensitive to changes 
in interest rates.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_CreditRisk2_S000001010Summary53Member"
      id="ixv-59397">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Credit Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Credit 
risk is the risk that the issuer of a security may be unable to make interest payments and/or repay principal 
when due. A downgrade to an issuer&#x2019;s credit rating or a perceived change in an issuer&#x2019;s financial 
strength may affect a security&#x2019;s value, and thus, impact the performance of a fund holding such 
securities. Government agency obligations have different levels of credit support and, therefore, different 
degrees of credit risk. Securities issued by agencies and instrumentalities of the U.S. Government that 
are supported by the full faith and credit of the United States, such as the Federal Housing Administration 
and Ginnie Mae, present little credit risk. Other securities issued by agencies and instrumentalities 
sponsored by the U.S. Government, that are supported only by the issuer&#x2019;s right to borrow from 
the U.S. Treasury, subject to certain limitations, and securities issued by agencies and instrumentalities 
sponsored by the U.S. Government that are sponsored by the credit of the issuing agencies, such as Freddie 
Mac and Fannie Mae, are subject to a greater degree of credit risk. U.S. government agency securities 
issued or guaranteed by the credit of the agency may still involve a risk of non-payment of principal 
and/or interest.&lt;/span&gt;&lt;/p&gt;
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_DerivativesRisk2_S000001010Summary53Member"
      id="ixv-59406">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives 
are instruments, such as swaps, futures contracts, and options thereon, whose value is derived from that 
of other assets, rates or indices. Derivatives can be used for hedging (attempting to reduce risk by 
offsetting one investment position with another) or non-hedging purposes. Hedging with derivatives may 
increase expenses, and there is no guarantee that a hedging strategy will work. While hedging can reduce 
or eliminate losses, it can also reduce or eliminate gains or cause losses if the market moves in a manner 
different from that anticipated by a fund or if the cost of the derivative outweighs the benefit of the 
hedge. The use of derivatives for non-hedging purposes may be considered to carry more risk than other 
types of investments. When a fund uses derivatives, the fund will be directly exposed to the risks of 
those derivatives. Derivative instruments are subject to a number of risks including counterparty, liquidity, 
interest rate, market, credit and management risks, as well as difficulties with respect to valuation. 
Changes in the value of a derivative may not correlate perfectly with the underlying asset, rate or index, 
and a fund could lose more than the principal amount invested. Additional risks are associated with the 
use of swaps including counterparty and credit risk (the risk that the other party to a swap agreement 
will not fulfill its contractual obligations, whether because of bankruptcy or other default) and liquidity 
risk (the possible lack of a secondary market for the swap agreement). Credit risk increases when a fund 
is the seller of swaps and counterparty risk increases when the fund is a buyer of swaps. In addition, 
where a fund is the seller of swaps, it may be required to liquidate portfolio securities at inopportune 
times in order to meet payment obligations. Swaps may be illiquid or difficult to value. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_LiquidityRisk2_S000001010Summary53Member"
      id="ixv-59410">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Liquidity Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Liquidity risk exists when 
particular portfolio investments are difficult to purchase or sell. To the extent that a fund holds illiquid 
investments, the fund&#x2019;s performance may be reduced due to an inability to sell the investments 
at opportune prices or times. Liquid portfolio investments may become illiquid or less liquid after purchase 
by a fund due to low trading volume, adverse investor perceptions, credit tightening and/or other market 
developments. Liquidity risk includes the risk that a fund will experience significant net redemptions 
at a time when it cannot find willing buyers for its portfolio securities or can only sell its portfolio 
securities at a material loss or at increased costs. Liquidity risk can be more pronounced in periods 
of market turmoil or in situations where ownership of shares of a fund are concentrated in one or a few 
investors. Investments that are illiquid or that trade in lower volumes may be more difficult to value. 
&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_SecuritiesLendingRisk2_S000001010Summary53Member"
      id="ixv-59415">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Securities lending involves the risk that the borrower may fail to return the securities in a timely 
manner or at all. As a result, a fund may lose money and there may be a delay in recovering the loaned 
securities. A fund could also lose money if it does not recover the securities and/or the value of the 
collateral falls, including the value of investments made with cash collateral. Securities lending also 
may have certain adverse tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_OperationalRisk2_S000001010Summary53Member"
      id="ixv-59419">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, 
system changes, faults in communication, and failures in systems, technology, or processes, and the use 
of artificial intelligence and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances 
are outside a fund&#x2019;s or its advisor&#x2019;s control, including instances at third parties. A fund 
and its advisor seek to reduce these operational risks through controls and procedures. However, measures 
that seek to reduce these operational risks through controls and procedures may not address every possible 
risk and may be inadequate to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_CyberSecurityRisk2_S000001010Summary53Member"
      id="ixv-59424">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber 
Security Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; 
use of internet, technology and information systems may expose the fund to potential risks linked to 
cyber security breaches of those technological or information systems. Cyber security breaches, amongst 
other things, could allow an unauthorized party to gain access to proprietary information, customer data, 
or fund assets, or cause the fund and/or its service providers to suffer data corruption or lose operational 
functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145394"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-59434">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The table also includes the performance of an additional index with a similar investment 
universe as the Portfolio. The Portfolio&#x2019;s past performance (before and after taxes) is not an 
indication of future results. Updated performance information for the Portfolio can be obtained by visiting 
https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The after-tax returns presented in the table for the Portfolio are calculated 
using the historical highest individual federal marginal income tax rates and do not reflect the impact 
of state and local taxes. Actual after-tax returns depend on an investor&#x2019;s tax situation and may 
differ from those shown in the table. In addition, the after-tax returns shown are not relevant to investors 
who hold shares of the Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual 
retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145395">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns 
and are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145396"> The Portfolio&#x2019;s past performance (before and after taxes) is not an 
indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145397">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145398">The after-tax returns presented in the table for the Portfolio are calculated 
using the historical highest individual federal marginal income tax rates and do not reflect the impact 
of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145399">In addition, the after-tax returns shown are not relevant to investors 
who hold shares of the Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual 
retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145400">DFA Two-Year 
Government Portfolio&#x2005;Institutional Class Shares &#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      id="ixv-145401">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      id="ixv-145402">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145403"
      unitRef="pure">0.0139</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      id="ixv-145404">2023-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145405"
      unitRef="pure">-0.0236</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      id="ixv-145406">2022-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145407">Annualized Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002761Member_S000001010Member_S000001010Summary53Member"
      id="ixv-145408">Return Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145409"
      unitRef="pure">0.0419</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145410"
      unitRef="pure">0.0211</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145411"
      unitRef="pure">0.0156</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      id="ixv-145412">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145413"
      unitRef="pure">0.0251</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145414"
      unitRef="pure">0.0103</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145415"
      unitRef="pure">0.0079</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      id="ixv-145416">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145417"
      unitRef="pure">0.0246</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145418"
      unitRef="pure">0.0115</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002761Member_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145419"
      unitRef="pure">0.0086</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_ICEBofA1-3YearUSTreasuryAgencyIndex3163_S000001010Member_S000001010Summary53Member"
      id="_448_">ICE BofA 1-3 Year US Treasury 
&amp; Agency Index1</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001010Member_S000001010Summary53Member"
      id="ixv-145421">(reflects no deduction for 
fees, expenses or taxes)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_ICEBofA1-3YearUSTreasuryAgencyIndex3164_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145422"
      unitRef="pure">0.0509</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_ICEBofA1-3YearUSTreasuryAgencyIndex3164_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145423"
      unitRef="pure">0.0179</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_ICEBofA1-3YearUSTreasuryAgencyIndex3164_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145424"
      unitRef="pure">0.0185</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_BloombergUSAggregateBondIndex3165_S000001010Member_S000001010Summary53Member"
      id="ixv-145425">Bloomberg U.S. Aggregate Bond Index</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_BloombergUSAggregateBondIndex3166_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145426"
      unitRef="pure">0.0730</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_BloombergUSAggregateBondIndex3166_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145427"
      unitRef="pure">-0.0036</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_BloombergUSAggregateBondIndex3166_S000001010Member_S000001010Summary53Member"
      decimals="INF"
      id="ixv-145428"
      unitRef="pure">0.0201</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145429"> Global Equity Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145430"> 
Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-76696">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the Global Equity Portfolio (the &#x201d;Global Equity Portfolio&#x201d; or the &#x201c;Portfolio&#x201d;) 
is to achieve long-term capital appreciation.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145431"> Fees 
and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-76703">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the 
fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may 
pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not 
reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145432">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145433">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145434"
      unitRef="pure">0.0020</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145435"
      unitRef="pure">0.0002</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145436"
      unitRef="pure">0.0020</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145437"
      unitRef="pure">0.0042</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="_469_"
      unitRef="pure">-0.0017</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145439"
      unitRef="pure">0.0025</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145440">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-76791">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This Example is meant to 
help you compare the cost of investing in the Portfolio with the cost of investing in other funds. The 
Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. The Example 
also assumes that your investment has a 5% return each year and that the Portfolio&#x2019;s operating expenses 
remain the same. The costs for the Portfolio reflect the net expenses of the Portfolio that result from 
the contractual expense waiver in the first year only. Although your actual costs may be higher or lower, 
based on these assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145441"
      unitRef="usd">26</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145442"
      unitRef="usd">26</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145443"
      unitRef="usd">118</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145444"
      unitRef="usd">118</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145445"
      unitRef="usd">218</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145446"
      unitRef="usd">218</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145447"
      unitRef="usd">218</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145448"
      unitRef="usd">513</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145449"
      unitRef="usd">513</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145450"
      unitRef="usd">513</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145451">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-76818">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund 
generally pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns 
over&#x201d; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result 
in higher taxes when fund shares are held in a taxable account. The Portfolio does not pay transaction 
costs when buying and selling shares of other funds managed by Dimensional Fund Advisors LP (the &#x201c;Underlying 
Funds&#x201d;); however, the Underlying Funds pay transaction costs when buying and selling securities for 
their portfolio. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, 
affect the Portfolio&#x2019;s performance. During the most recent fiscal year, the Portfolio's portfolio turnover 
rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;6%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; of the average value of 
its investment portfolio. &lt;/span&gt;&lt;/p&gt;
</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145452"
      unitRef="pure">0.06</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145453"> 
Principal Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-76831">&lt;p style="-sec-ix-redline:true;font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
Global Equity Portfolio is a &#x201c;fund of funds&#x201d;, which means that the Portfolio generally allocates 
its assets among other funds managed by Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;), although it 
has the ability to invest directly in securities and derivatives. The Portfolio allocates its assets 
to Underlying Funds that invest in domestic and international equity securities. To achieve the Portfolio&#x2019;s 
and the Underlying Funds&#x2019; investment objectives, the Advisor implements an integrated investment approach 
that combines research, portfolio design, portfolio management, and trading functions. As further described 
below, the Portfolio&#x2019;s and the Underlying Funds&#x2019; designs emphasize long-term drivers of expected 
returns identified by the Advisor&#x2019;s research, while balancing risk through broad diversification across 
companies, sectors, and countries. The Advisor&#x2019;s portfolio management and trading processes further 
balance those long-term drivers of expected returns with shorter-term drivers of expected returns and 
trading costs.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Global Equity Portfolio is designed to provide exposure 
to a broad portfolio of securities of both U.S. companies and non-U.S. companies associated with countries 
with developed and emerging markets, primarily by purchasing shares of the Underlying Funds. In addition, 
the Portfolio further diversifies its investment portfolio by allocating its assets among Underlying 
Funds that provide exposure to companies in all market capitalization ranges, as well as real estate 
securities. Periodically the Advisor will review the allocations for the Portfolio in each Underlying 
Fund and may adjust allocations to the Underlying Funds or may add or remove Underlying Funds in the 
Portfolio without notice to shareholders.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;As of February 28, 2026, 
the Global Equity Portfolio invests in domestic equity Underlying Funds that purchase a broad and diverse 
portfolio of securities of U.S. operating companies of all market capitalization sizes with a moderate 
to meaningful emphasis on smaller capitalization, lower relative price, and higher profitability companies 
and a domestic equity Underlying Fund that primarily invests in publicly traded REITs. The Portfolio 
also purchases international equity Underlying Funds that purchase a broad and diverse portfolio of securities 
of companies in developed and emerging markets of all market capitalization sizes with a meaningful emphasis 
on smaller capitalization, lower relative price, and higher profitability companies and an international 
equity Underlying Fund that primarily invests in publicly traded REITs and REIT-like entities.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Portfolio, directly or indirectly through its investment in the Underlying Funds, intends to invest its 
assets to gain exposure to at least three different countries, including the United States. As of the 
date of the Prospectus, the Portfolio, directly or indirectly through its investment in the Underlying 
Funds, invests approximately 72% of its net assets in U.S. companies. This percentage will change due 
to market conditions.&lt;/p&gt;&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The Advisor may also increase or reduce 
the Global Equity Portfolio&#x2019;s and/or Underlying Funds&#x2019; exposure to an eligible company, or exclude 
a company, based on shorter-term considerations, such as a company&#x2019;s price momentum, short-run reversals, 
and investment characteristics. In assessing a company&#x2019;s investment characteristics, the Advisor considers 
ratios such as recent changes in assets divided by total assets. The criteria the Advisor uses for assessing 
a company&#x2019;s investment characteristics are subject to change from time to time. In addition, the Advisor 
seeks to reduce trading costs using a flexible trading approach that looks for opportunities to participate 
in the available market liquidity, while managing turnover and explicit transaction costs.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
Global Equity Portfolio and each Underlying Fund may purchase and sell futures contracts and options 
on futures contracts for foreign or U.S. equity securities and indices to increase or decrease equity 
market exposure based on actual or expected cash inflows to or outflows from the Portfolio or Underlying 
Funds. Certain Underlying Funds may enter into foreign currency exchange transactions, including foreign 
currency forward contracts to hedge foreign currency risks, to hedge against fluctuations in currency 
exchange rates, or to transfer balances from one currency to another. Also the Portfolio and Underlying 
Funds may lend their portfolio securities to generate additional income.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A 
summary of the investment strategies and policies of the Underlying Funds in which the Global Equity 
Portfolio invests as of the date of this Prospectus is described in the Portfolio&#x2019;s Prospectus in the 
section entitled &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;&#x201c;ADDITIONAL INFORMATION ON INVESTMENT OBJECTIVES AND POLICIES&#x2014;Investments 
in Underlying Funds.&#x201d;&lt;/span&gt;&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_PrincipalRisks2_S000001016Summary70Member"
      id="ixv-76847">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;a href="" id="x5x6"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because the value of your 
investment in the Portfolio will fluctuate, there is the risk that you will lose money. An investment 
in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance 
Corporation or any other government agency. The following is a description of principal risks of investing 
in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_RiskLoseMoneyMember_S000001016Summary70Member"
      id="ixv-145454">Because the value of your 
investment in the Portfolio will fluctuate, there is the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_RiskNotInsuredMember_S000001016Summary70Member"
      id="ixv-145455">An investment 
in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance 
Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_FundofFundsRisk2_S000001016Summary70Member"
      id="ixv-76853">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Fund of Funds Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The investment performance of a fund of funds is affected by the investment performance 
of the underlying funds in which the fund of funds invests. The ability of a fund of funds to achieve 
its investment objective depends on the ability of the underlying funds to meet their investment objectives 
and on the Advisor&#x2019;s decisions regarding the allocation of a fund of funds&#x2019; assets among the underlying 
funds. A fund of funds may allocate assets to an underlying fund or asset class that underperforms other 
funds or asset classes.  There can be no assurance that the investment objective of a fund of funds or 
any underlying fund will be achieved. Through its investments in the underlying funds, a fund of funds 
is subject to the risks of the underlying funds&#x2019; investments. When a fund of funds invests in underlying 
funds, investors are exposed to a proportionate share of the expenses of those underlying funds in addition 
to the expenses of a fund of funds. Certain risks of the Underlying Funds&#x2019; investments that are principal 
risks of investing in the Portfolio are described below.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_EquityMarketRisk2_S000001016Summary70Member"
      id="ixv-76858">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of equity securities, and a fund that owns them, to rise or fall. Stock 
markets are volatile, with periods of rising prices and periods of falling prices.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_ForeignSecuritiesandCurrenciesRisk2_S000001016Summary70Member"
      id="ixv-76863">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Securities and Currencies Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Foreign securities prices 
may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or 
(b) less regulated or liquid securities markets. Investors holding these securities may also be exposed 
to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. 
dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, 
changing its value against the U.S. dollar).&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Foreign issuers may not 
be subject to uniform accounting, auditing and financial reporting standards and there may be less reliable 
and publicly available financial and other information about such issuers, as compared to U.S. issuers. 
A fund may have greater difficulty voting proxies, exercising shareholder rights, securing dividends 
and/or interest and obtaining information regarding corporate actions on a timely basis, pursuing legal 
remedies, and obtaining judgments with respect to foreign investments in foreign courts than with respect 
to domestic issuers in U.S. courts.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Depositary receipts are generally subject 
to the same risks as the foreign securities that they evidence or into which they may be converted. In 
addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered 
depositary receipts, are under no obligation to distribute shareholder communications to the holders 
of such receipts, or to pass through to them any voting rights with respect to the deposited securities. 
Depositary receipts that are not sponsored by the issuer may be less liquid and there may be less readily 
available public information about the issuer.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_SmallandMid-CapCompanyRisk2_S000001016Summary70Member"
      id="ixv-76870">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Small and 
Mid-Cap Company Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities of small and mid-cap 
companies are often less liquid than those of large companies and this could make it difficult to sell 
a small or mid-cap company security at a desired time or price. As a result, small and mid-cap company 
stocks may fluctuate relatively more in price. In general, small and mid-capitalization companies are 
also more vulnerable than larger companies to adverse business or economic developments and they may 
have more limited resources.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_ProfitabilityInvestmentRisk2_S000001016Summary70Member"
      id="ixv-76875">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Profitability 
Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; High relative profitability stocks may perform differently 
from the market as a whole and an investment strategy purchasing these securities may cause a fund to 
at times underperform equity funds that use other investment strategies.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_ValueInvestmentRisk2_S000001016Summary70Member"
      id="ixv-76879">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Value Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Value stocks may perform 
differently from the market as a whole and an investment strategy purchasing these securities may cause 
a fund to at times underperform equity funds that use other investment strategies. Value stocks can react 
differently to political, economic, and industry developments than the market as a whole and other types 
of stocks. Value stocks also may underperform the market for long periods of time.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_EmergingMarketsRisk2_S000001016Summary70Member"
      id="ixv-76887">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Emerging Markets Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities 
of issuers associated with emerging market countries may be subject to higher and additional risks than 
securities of issuers in developed foreign markets.&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Numerous emerging market 
countries have a history of, and continue to experience serious, and potentially continuing, economic 
and political problems. Stock markets in many emerging market countries are relatively small, expensive 
to trade in and generally have higher risks than those in developed markets. Securities in emerging markets 
also may be less liquid than those in developed markets and foreigners are often limited in their ability 
to invest in, and withdraw assets from, these markets. Additional restrictions may be imposed under other 
conditions. Frontier market countries generally have smaller economies or less developed capital markets 
and, as a result, the risks of investing in emerging market countries are magnified in frontier market 
countries.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_DerivativesRisk2_S000001016Summary70Member"
      id="ixv-76894">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Derivatives are instruments, such as futures contracts, and options thereon, and foreign currency forward 
contracts, whose value is derived from that of other assets, rates or indices. Derivatives can be used 
for hedging (attempting to reduce risk by offsetting one investment position with another) or non-hedging 
purposes. Hedging with derivatives may increase expenses, and there is no guarantee that a hedging strategy 
will work. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains or cause 
losses if the market moves in a manner different from that anticipated by a fund or if the cost of the 
derivative outweighs the benefit of the hedge. In regard to currency hedging, it is generally not possible 
to precisely match the foreign currency exposure of such foreign currency forward contracts to the value 
of the securities involved due to fluctuations in the market values of such securities and cash flows 
into and out of a fund between the date a foreign currency forward contract is entered into and the date 
it expires. The use of derivatives for non-hedging purposes may be considered to carry more risk than 
other types of investments. When a fund uses derivatives, the fund will be directly exposed to the risks 
of those derivatives. Derivative instruments are subject to a number of risks including counterparty, 
settlement, liquidity, interest rate, market, credit and management risks, as well as difficulties with 
respect to valuation. Changes in the value of a derivative may not correlate perfectly with the underlying 
asset, rate or index, and a fund could lose more than the principal amount invested. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_SecuritiesLendingRisk2_S000001016Summary70Member"
      id="ixv-76898">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Securities lending involves 
the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, 
a fund may lose money and there may be a delay in recovering the loaned securities. A fund could also 
lose money if it does not recover the securities and/or the value of the collateral falls, including 
the value of investments made with cash collateral. Securities lending also may have certain adverse 
tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_OperationalRisk2_S000001016Summary70Member"
      id="ixv-76902">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, system changes, faults 
in communication, and failures in systems, technology, or processes, and the use of artificial intelligence 
and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances are outside a fund&#x2019;s or 
its advisor&#x2019;s control, including instances at third parties. A fund and its advisor seek to reduce 
these operational risks through controls and procedures. However, measures that seek to reduce these 
operational risks through controls and procedures may not address every possible risk and may be inadequate 
to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_CyberSecurityRisk2_S000001016Summary70Member"
      id="ixv-76907">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber Security 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; use of internet, technology 
and information systems may expose the fund to potential risks linked to cyber security breaches of those 
technological or information systems. Cyber security breaches, amongst other things, could allow an unauthorized 
party to gain access to proprietary information, customer data, or fund assets, or cause the fund and/or 
its service providers to suffer data corruption or lose operational functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145456"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-76917">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The Portfolio&#x2019;s past performance (before and after taxes) is not an indication of future 
results. Updated performance information for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes. 
Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown in the 
table. In addition, the after-tax returns &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged 
arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145457">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145458"> The Portfolio&#x2019;s past performance (before and after taxes) is not an indication of future 
results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145459">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145460">The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145461">In addition, the after-tax returns shown are not relevant to investors who hold shares of the Portfolio through tax-advantaged 
arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145462">Global 
Equity Portfolio&#x2005;Institutional Class Shares &#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      id="ixv-145463">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      id="ixv-145464">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145465"
      unitRef="pure">0.2122</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      id="ixv-145466">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145467"
      unitRef="pure">-0.2589</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      id="ixv-145468">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145469">Annualized Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002768Member_S000001016Member_S000001016Summary70Member"
      id="ixv-145470">Return 
Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145471"
      unitRef="pure">0.2017</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145472"
      unitRef="pure">0.1194</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145473"
      unitRef="pure">0.1193</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      id="ixv-145474">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145475"
      unitRef="pure">0.1929</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145476"
      unitRef="pure">0.1089</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145477"
      unitRef="pure">0.1108</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      id="ixv-145478">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145479"
      unitRef="pure">0.1252</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145480"
      unitRef="pure">0.0930</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002768Member_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145481"
      unitRef="pure">0.0968</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_MSCIAllCountryWorldIMIIndexnetdividends3228_S000001016Member_S000001016Summary70Member"
      id="ixv-145482">MSCI All Country World IMI Index 
(net dividends)</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001016Member_S000001016Summary70Member"
      id="ixv-145483">(reflects 
no deduction for fees, expenses or taxes on sales)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_MSCIAllCountryWorldIMIIndexnetdividends3229_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145484"
      unitRef="pure">0.2206</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_MSCIAllCountryWorldIMIIndexnetdividends3229_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145485"
      unitRef="pure">0.1075</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_MSCIAllCountryWorldIMIIndexnetdividends3229_S000001016Member_S000001016Summary70Member"
      decimals="INF"
      id="ixv-145486"
      unitRef="pure">0.1145</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145487"> Global Allocation 60/40 Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145488"> 
Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-77231">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the Global Allocation 60/40 Portfolio (the &#x201c;60/40 Portfolio&#x201d; or the &#x201c;Portfolio&#x201d;) 
is to seek total return consisting of capital appreciation and current income.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145489"> Fees 
and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-77238">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the 
fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may 
pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not 
reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145490">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145491">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145492"
      unitRef="pure">0.0019</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145493"
      unitRef="pure">0.0002</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145494"
      unitRef="pure">0.0019</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145495"
      unitRef="pure">0.0040</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="_559_"
      unitRef="pure">-0.0016</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145497"
      unitRef="pure">0.0024</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145498">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-77326">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This Example is meant to 
help you compare the cost of investing in the Portfolio with the cost of investing in other funds. The 
Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. The Example 
also assumes that your investment has a 5% return each year and that the Portfolio&#x2019;s operating expenses 
remain the same. The costs for the Portfolio reflect the net expenses of the Portfolio that result from 
the contractual expense waiver in the first year only. Although your actual costs may be higher or lower, 
based on these assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145499"
      unitRef="usd">25</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145500"
      unitRef="usd">25</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145501"
      unitRef="usd">112</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145502"
      unitRef="usd">112</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145503"
      unitRef="usd">208</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145504"
      unitRef="usd">208</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145505"
      unitRef="usd">208</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145506"
      unitRef="usd">490</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145507"
      unitRef="usd">490</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145508"
      unitRef="usd">490</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145509">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-77353">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund 
generally pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns 
over&#x201d; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result 
in higher taxes when fund shares are held in a taxable account. The Portfolio does not pay transaction 
costs when buying and selling shares of other funds managed by Dimensional Fund Advisors LP (the &#x201c;Underlying 
Funds&#x201d;); however, the Underlying Funds pay transaction costs when buying and selling securities for 
their portfolio. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, 
affect the Portfolio&#x2019;s performance. During the most recent fiscal year, the Portfolio's portfolio turnover 
rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;4%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; of the average value of 
its investment portfolio. &lt;/span&gt;&lt;/p&gt;
</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145510"
      unitRef="pure">0.04</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145511"> 
Principal Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-77366">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
60/40 Portfolio is a &#x201c;fund of funds&#x201d;, which means that the Portfolio generally allocates its assets 
among other funds managed by Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;), although it has the ability 
to invest directly in securities and derivatives. The Portfolio allocates its assets to Underlying Funds 
that invest in equity and fixed income securities. To achieve the Portfolio&#x2019;s and the Underlying Funds&#x2019; 
investment objectives, the Advisor implements an integrated investment approach that combines research, 
portfolio design, portfolio management, and trading functions. As further described below, the Portfolio&#x2019;s 
and the Underlying Funds&#x2019; designs emphasize long-term drivers of expected returns identified by the 
Advisor&#x2019;s research, while balancing risk through broad diversification across companies, sectors, and 
countries. The Advisor&#x2019;s portfolio management and trading processes further balance those long-term 
drivers of expected returns with shorter-term drivers of expected returns and trading costs.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Generally, 
the Portfolio invests its assets in domestic and international equity Underlying Funds and fixed income 
Underlying Funds to achieve an allocation of approximately 40% to 80% (with a target allocation of approximately 
60%) of the Portfolio&#x2019;s assets to domestic and international equity Underlying Funds and 20% to 60% 
(with a target allocation of approximately 40%) of its assets to fixed income Underlying Funds. Periodically 
the Advisor will review the allocations for the Portfolio in each Underlying Fund and may adjust allocations 
to the Underlying Funds or may add or remove Underlying Funds in the Portfolio without notice to shareholders.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;In 
addition to its allocation strategy of providing exposure to the domestic and international equity and 
fixed income markets through investment in the Underlying Funds, the 60/40 Portfolio further diversifies 
its investment portfolio by allocating its assets among Underlying Funds that represent a variety of 
different asset classes. As of February 28, 2026, the Portfolio invests in: (1) domestic equity Underlying 
Funds that purchase a broad and diverse portfolio of securities of U.S. operating companies of all market 
capitalization sizes with a moderate to meaningful emphasis on smaller capitalization, lower relative 
price, and higher profitability companies and a domestic equity Underlying Fund that primarily invests 
in publicly traded REITs; (2) international equity Underlying Funds that purchase a broad and diverse 
portfolio of securities of companies in developed and emerging markets of all market capitalization sizes 
with a meaningful emphasis on smaller capitalization, lower relative price, and higher profitability 
companies and an international equity Underlying Fund that primarily invests in publicly traded REITs 
and REIT-like entities; and (3) fixed income Underlying Funds that may purchase U.S. and foreign debt 
securities such as obligations issued or guaranteed by the U.S. and foreign governments, their agencies 
and instrumentalities, bank obligations, commercial paper, repurchase agreements, money market funds, 
obligations of other domestic and foreign issuers, securities of domestic and foreign issuers denominated 
in U.S. dollars but not trading in the United States, obligations of supranational organizations and 
inflation-protected securities.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Portfolio, directly or indirectly through its investment 
in the Underlying Funds, intends to invest its assets to gain exposure to at least three different countries, 
including the United States. As of the date of the Prospectus, the Portfolio, directly or indirectly 
through its investment in the Underlying Funds, invests approximately 55% of its net assets in U.S. companies 
or issuers. This percentage will change due to market conditions.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Advisor may also increase or reduce the 60/40 Portfolio&#x2019;s and/or Underlying Funds&#x2019; exposure to an 
eligible company, or exclude a company, based on shorter-term considerations, such as a company&#x2019;s price 
momentum, short-run reversals, and investment characteristics. In assessing a company&#x2019;s investment 
characteristics, the Advisor considers ratios such as recent changes in assets divided by total assets. 
The criteria the Advisor uses for assessing a company&#x2019;s investment characteristics are subject to change 
from time to time. In addition, the Advisor seeks to reduce trading costs using a flexible trading approach 
that looks for opportunities to participate in the available market liquidity, while managing turnover 
and explicit transaction costs.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 60/40 Portfolio and each Underlying Fund may purchase 
or sell futures contracts and options on futures contracts, to increase or decrease market exposure based 
on actual or expected cash inflows to or outflows from the Portfolio or Underlying Fund. Certain Underlying 
Funds may enter into foreign currency exchange transactions, including foreign currency forward contracts, 
in connection with the settlement of foreign securities, to hedge foreign currency risks, to hedge against 
fluctuations in currency exchange rates, or to transfer balances from one currency to another. Certain 
fixed income Underlying Funds also may enter into credit default swaps on issuers or indices to buy or 
sell credit protection to hedge credit exposure; gain market or issuer exposure without owning the underlying 
securities; or increase the Underlying Fund&#x2019;s total return. Certain fixed income Underlying Funds also 
may purchase or sell futures contracts and options on futures contracts, to hedge interest rate or currency 
exposure &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;or for non-hedging purposes, such as a substitute for direct investment or to 
increase or decrease market exposure based on actual or expected cash inflows to or outflows from the 
Underlying Fund. Certain fixed income Underlying Funds may use derivatives to establish short positions 
for individual securities, markets, or currencies, in order to adjust the Underlying Fund&#x2019;s duration 
or to replace more traditional direct investments. Also the Portfolio and Underlying Funds may lend their 
portfolio securities to generate additional income.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A summary 
of the investment strategies and policies of the Underlying Funds in which the 60/40 Portfolio invests 
as of the date of this Prospectus is described in the Portfolio&#x2019;s Prospectus in the section entitled 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;&#x201c;ADDITIONAL INFORMATION ON INVESTMENT OBJECTIVES AND POLICIES&#x2014;Investments 
in Underlying Funds.&#x201d;&lt;/span&gt;&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_PrincipalRisks2_S000001017Summary71Member"
      id="ixv-77381">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x15x6"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money. 
An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency. The following is a description of principal 
risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_RiskLoseMoneyMember_S000001017Summary71Member"
      id="ixv-145512">Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_RiskNotInsuredMember_S000001017Summary71Member"
      id="ixv-145513">An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_FundofFundsRisk2_S000001017Summary71Member"
      id="ixv-77387">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Fund of Funds 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The investment performance of a fund of funds is affected 
by the investment performance of the underlying funds in which the fund of funds invests. The ability 
of a fund of funds to achieve its investment objective depends on the ability of the underlying funds 
to meet their investment objectives and on the Advisor&#x2019;s decisions regarding the allocation of a fund 
of funds&#x2019; assets among the underlying funds. A fund of funds may allocate assets to an underlying fund 
or asset class that underperforms other funds or asset classes.  There can be no assurance that the investment 
objective of a fund of funds or any underlying fund will be achieved. Through its investments in the 
underlying funds, a fund of funds is subject to the risks of the underlying funds&#x2019; investments. When 
a fund of funds invests in underlying funds, investors are exposed to a proportionate share of the expenses 
of those underlying funds in addition to the expenses of a fund of funds. Certain risks of the Underlying 
Funds&#x2019; investments that are principal risks of investing in the Portfolio are described below.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_EquityMarketRisk2_S000001017Summary71Member"
      id="ixv-77392">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of equity securities, and a fund that owns them, to rise or fall. Stock 
markets are volatile, with periods of rising prices and periods of falling prices.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_MarketRisk2_S000001017Summary71Member"
      id="ixv-77397">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of securities, and a fund that owns them, to rise or fall.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_ForeignSecuritiesandCurrenciesRisk2_S000001017Summary71Member"
      id="ixv-77402">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Securities and Currencies Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Foreign securities prices 
may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or 
(b) less regulated or liquid securities markets. Investors holding these securities may also be exposed 
to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. 
dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, 
changing its value against the U.S. dollar).&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Foreign issuers may not 
be subject to uniform accounting, auditing and financial reporting standards and there may be less reliable 
and publicly available financial and other information about such issuers, as compared to U.S. issuers. 
A fund may have greater difficulty voting proxies, exercising shareholder rights, securing dividends 
and/or interest and obtaining information regarding corporate actions on a timely basis, pursuing legal 
remedies, and obtaining judgments with respect to foreign investments in foreign courts than with respect 
to domestic issuers in U.S. courts.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Depositary receipts are generally subject 
to the same risks as the foreign securities that they evidence or into which they may be converted. In 
addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered 
depositary receipts, are under no obligation to distribute shareholder communications to the holders 
of such receipts, or to pass through to them any voting rights with respect to the deposited securities. 
Depositary receipts that are not sponsored by the issuer may be less liquid and there may be less readily 
available public information about the issuer.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_ForeignGovernmentDebtRisk2_S000001017Summary71Member"
      id="ixv-77412">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Government Debt Risk&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt;: &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
risk that: (a) the governmental entity that controls the repayment of government debt may not be willing 
or able to repay the principal and/or to pay the interest when it becomes due, due to factors such as 
political considerations, the relative size of the governmental entity&#x2019;s debt position in relation 
to the economy, cash flow problems, insufficient foreign currency reserves, the failure to put in place 
economic reforms required by the International Monetary Fund or other multilateral agencies, and/or other 
national economic factors; (b) governments may default on their debt securities, which may require holders 
of such securities to participate in debt rescheduling; and (c) there is no legal or bankruptcy process 
by which defaulted government debt may be collected in whole or in part.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_SmallandMid-CapCompanyRisk2_S000001017Summary71Member"
      id="ixv-77417">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Small and Mid-Cap Company Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities of small and 
mid-cap companies are often less liquid than those of large companies and this could make it difficult 
to sell a small or mid-cap company security at a desired time or price. As a result, small and mid-cap 
company stocks may fluctuate relatively more in price. In general, small and mid-capitalization companies 
are also more vulnerable than larger companies to adverse business or economic developments and they 
may have more limited resources.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_ProfitabilityInvestmentRisk2_S000001017Summary71Member"
      id="ixv-77422">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Profitability 
Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; High relative profitability stocks may perform differently 
from the market as a whole and an investment strategy purchasing these securities may cause a fund to 
at times underperform equity funds that use other investment strategies.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_ValueInvestmentRisk2_S000001017Summary71Member"
      id="ixv-77426">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Value Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Value stocks may perform 
differently from the market as a whole and an investment strategy purchasing these securities may cause 
a fund to at times underperform equity funds that use other investment strategies. Value stocks can react 
differently to political, economic, and industry developments than the market as a whole and other types 
of stocks. Value stocks also may underperform the market for long periods of time.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_EmergingMarketsRisk2_S000001017Summary71Member"
      id="ixv-77431">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Emerging Markets Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities of issuers associated 
with emerging market countries may be subject to higher and additional risks than securities of issuers 
in developed foreign markets.&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Numerous emerging market countries 
have a history of, and continue to experience serious, and potentially continuing, economic and political 
problems. Stock markets in many emerging market countries are relatively small, expensive to trade in 
and generally have higher risks than those in developed markets. Securities in emerging markets also 
may be less liquid than those in developed markets and foreigners are often limited in their ability 
to invest in, and withdraw assets from, these markets. Additional restrictions may be imposed under other 
conditions. Frontier market countries generally have smaller economies or less developed capital markets 
and, as a result, the risks of investing in emerging market countries are magnified in frontier market 
countries.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_InterestRateRisk2_S000001017Summary71Member"
      id="ixv-77438">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Interest Rate Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:AdvP3F2712; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Fixed income securities are subject to interest rate risk because the prices of 
fixed income securities tend to move in the opposite direction of interest rates. When interest rates 
rise, fixed income security prices fall. During periods of very low or negative interest rates, a fund 
may be subject to a greater risk of rising interest rates. When interest rates fall, fixed income security 
prices rise. In general, fixed income securities with longer maturities are more sensitive to changes 
in interest rates.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_CreditRisk2_S000001017Summary71Member"
      id="ixv-77443">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Credit Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Credit 
risk is the risk that the issuer of a security may be unable to make interest payments and/or repay principal 
when due. A downgrade to an issuer&#x2019;s credit rating or a perceived change in an issuer&#x2019;s financial 
strength may affect a security&#x2019;s value, and thus, impact the performance of a fund holding such securities. 
Government agency obligations have different levels of credit support and, therefore, different degrees 
of credit risk. Securities issued by agencies and instrumentalities of the U.S. Government that are supported 
by the full faith and credit of the United States, such as the Federal Housing Administration and Ginnie 
Mae, present little credit risk. Other securities issued by agencies and instrumentalities sponsored 
by the U.S. Government, that are supported only by the issuer&#x2019;s right to borrow from the U.S. Treasury, 
subject to certain limitations, and securities issued by agencies and instrumentalities sponsored by 
the U.S. Government that are sponsored by the credit of the issuing agencies, such as Freddie Mac and 
Fannie Mae, are subject to a greater degree of credit risk. U.S. government agency securities issued 
or guaranteed by the credit of the agency may still involve a risk of non-payment of principal and/or 
interest. Credit risk is greater for fixed income securities with ratings below investment grade (e.g., 
BB+ or below by S&amp;amp;P or Fitch or Ba1 or below by Moody&#x2019;s). Fixed income securities that are below 
investment grade involve high credit risk and are considered speculative. Below investment grade fixed 
income securities may also fluctuate in value more than higher quality fixed income securities and, during 
periods of market volatility, may be more difficult to sell at the time and price a fund desires.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_IncomeRisk2_S000001017Summary71Member"
      id="ixv-77451">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Income Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Income 
risk is the risk that falling interest rates will cause a fund&#x2019;s income to decline because, among other 
reasons, the proceeds from maturing short-term securities in its portfolio may be reinvested in lower-yielding 
securities.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_CallRisk2_S000001017Summary71Member"
      id="ixv-77456">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Call Risk&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt;: &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Call 
risk is the risk that during periods of falling interest rates, an issuer will call or repay a higher-yielding 
fixed income security before its maturity date, forcing a fund to reinvest in fixed income securities 
with lower interest rates than the original obligations.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_DerivativesRisk2_S000001017Summary71Member"
      id="ixv-77461">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, 
such as swaps, futures contracts, and options thereon, and foreign currency forward contracts, whose 
value is derived from that of other assets, rates or indices. Derivatives can be used for hedging (attempting 
to reduce risk by offsetting one investment position with another) or non-hedging purposes. Hedging with 
derivatives may increase expenses, and there is no guarantee that a hedging strategy will work. While 
hedging can reduce or eliminate losses, it can also reduce or eliminate gains or cause losses if the 
market moves in a manner different from that anticipated by a fund or if the cost of the derivative outweighs 
the benefit of the hedge. In regard to currency hedging, it is generally not possible to precisely match 
the foreign currency exposure of such foreign currency forward contracts to the value of the securities 
involved due to fluctuations in the market values of such securities and cash flows into and out of a 
fund between the date a foreign currency forward contract is entered into and the date it expires. The 
use of derivatives for non-hedging purposes may be considered to carry more risk than other types of 
investments. When a fund uses derivatives, the fund will be directly exposed to the risks of those derivatives. 
Derivative instruments are subject to a number of risks including counterparty, liquidity, interest rate, 
market, credit and management risks, as well as difficulties with respect to valuation. Changes in the 
value of a derivative may not correlate perfectly with the underlying asset, rate or index, and a fund 
could lose more than the principal amount invested. Additional risks are associated with the use of swaps 
including counterparty and credit risk (the risk that the other party to a swap agreement will not fulfill 
its contractual obligations, whether because of bankruptcy or other default) and liquidity risk (the 
possible lack of a secondary market for the swap agreement). Credit risk increases when a fund is the 
seller of swaps and counterparty risk increases when the fund is a buyer of swaps. In addition, where 
a fund is the seller of swaps, it may be required to liquidate portfolio securities at inopportune times 
in order to meet payment obligations. Swaps may be illiquid or difficult to value. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_LiquidityRisk2_S000001017Summary71Member"
      id="ixv-77465">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Liquidity Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Liquidity risk exists when 
particular portfolio investments are difficult to purchase or sell. To the extent that a fund holds illiquid 
investments, the fund&#x2019;s performance may be reduced due to an inability to sell the investments at opportune 
prices or times. Liquid portfolio investments may become illiquid or less liquid after purchase by a 
fund due to low trading volume, adverse investor perceptions, credit tightening and/or other market developments. 
Liquidity risk includes the risk that a fund will experience significant net redemptions at a time when 
it cannot find willing buyers for its portfolio securities or can only sell its portfolio securities 
at a material loss or at increased costs. Liquidity risk can be more pronounced in periods of market 
turmoil or in situations where ownership of shares of a fund are concentrated in one or a few investors. 
Investments that are illiquid or that trade in lower volumes may be more difficult to value. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_SecuritiesLendingRisk2_S000001017Summary71Member"
      id="ixv-77470">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Securities lending involves 
the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, 
a fund may lose money and there may be a delay in recovering the loaned securities. A fund could also 
lose money if it does not recover the securities and/or the value of the collateral falls, including 
the value of investments made with cash collateral. Securities lending also may have certain adverse 
tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_OperationalRisk2_S000001017Summary71Member"
      id="ixv-77474">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, system changes, faults 
in communication, and failures in systems, technology, or processes, and the use of artificial intelligence 
and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances are outside a fund&#x2019;s or 
its advisor&#x2019;s control, including instances at third parties. A fund and its advisor seek to reduce 
these operational risks through controls and procedures. However, measures that seek to reduce these 
operational risks through controls and procedures may not address every possible risk and may be inadequate 
to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_CyberSecurityRisk2_S000001017Summary71Member"
      id="ixv-77479">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber Security 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; use of internet, technology 
and information systems may expose the fund to potential risks linked to cyber security breaches of those 
technological or information systems. Cyber security breaches, amongst other things, could allow an unauthorized 
party to gain access to proprietary information, customer data, or fund assets, or cause the fund and/or 
its service providers to suffer data corruption or lose operational functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145514"> 
Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-77492">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The bar chart and table 
immediately following illustrate the variability of the Portfolio&#x2019;s returns and are meant to provide 
some indication of the risks of investing in the Portfolio. The bar chart shows the changes in the Portfolio&#x2019;s 
performance from year to year. The table illustrates how annualized returns for certain periods, both 
before and after taxes, compare with those of a broad measure of market performance. The table also includes 
the performance of additional indexes with similar investment universes of the Portfolio, or certain 
portions of the Portfolio. The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results. Updated performance information for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes. 
Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown in the 
table. In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145515">The bar chart and table 
immediately following illustrate the variability of the Portfolio&#x2019;s returns and are meant to provide 
some indication of the risks of investing in the Portfolio. The bar chart shows the changes in the Portfolio&#x2019;s 
performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145516"> The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145517">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145518">The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145519">In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145520">Global 
Allocation 60/40 Portfolio&#x2005;Institutional Class Shares 
&#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      id="ixv-145521">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      id="ixv-145522">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145523"
      unitRef="pure">0.1384</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      id="ixv-145524">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145525"
      unitRef="pure">-0.1577</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      id="ixv-145526">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145527">Annualized 
Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002770Member_S000001017Member_S000001017Summary71Member"
      id="ixv-145528">Return 
Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145529"
      unitRef="pure">0.1406</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145530"
      unitRef="pure">0.0774</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145531"
      unitRef="pure">0.0835</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      id="ixv-145532">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145533"
      unitRef="pure">0.1159</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145534"
      unitRef="pure">0.0603</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145535"
      unitRef="pure">0.0707</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      id="ixv-145536">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145537"
      unitRef="pure">0.0956</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145538"
      unitRef="pure">0.0570</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002770Member_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145539"
      unitRef="pure">0.0642</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_Global6040CompositeIndex3230_S000001017Member_S000001017Summary71Member"
      id="_640_">Global 60/40 Composite Index1</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145541">(reflects 
no deduction for fees, expenses or taxes on sales)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_Global6040CompositeIndex3231_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145542"
      unitRef="pure">0.1493</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_Global6040CompositeIndex3231_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145543"
      unitRef="pure">0.0734</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_Global6040CompositeIndex3231_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145544"
      unitRef="pure">0.0779</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_SPGlobalBMIIndexnetdividends3232_S000001017Member_S000001017Summary71Member"
      id="ixv-145545">S&amp;P Global BMI Index (net dividends)</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_SPGlobalBMIIndexnetdividends3233_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145546"
      unitRef="pure">0.2196</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_SPGlobalBMIIndexnetdividends3233_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145547"
      unitRef="pure">0.1050</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_SPGlobalBMIIndexnetdividends3233_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145548"
      unitRef="pure">0.1128</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3234_S000001017Member_S000001017Summary71Member"
      id="_650_">ICE BofA 1-3 Year Global 
Government Index (hedged to USD)2</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3235_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145550"
      unitRef="pure">0.0484</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3235_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145551"
      unitRef="pure">0.0223</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3235_S000001017Member_S000001017Summary71Member"
      decimals="INF"
      id="ixv-145552"
      unitRef="pure">0.0209</oef:AvgAnnlRtrPct>
    <oef:PerformanceAdditionalMarketIndex
      contextRef="Context_20251031_20251031_S000001017Member_S000001017Summary71Member"
      id="ixv-145553">The Global 60/40 Composite Index is an 
unmanaged hypothetical index composed of 60% S&amp;P Global BMI Index (net dividends) and 40% ICE BofA 
1-3 Year Global Government Index (hedged to USD).</oef:PerformanceAdditionalMarketIndex>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145554"> Global Allocation 25/75 Portfolio</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145555"> 
Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-77903">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the Global Allocation 25/75 Portfolio (the &#x201c;25/75 Portfolio&#x201d; or the &#x201c;Portfolio&#x201d;) 
is to seek total return consistent with current income and preservation of capital with some capital 
appreciation.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145556"> Fees and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-77910">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This 
table describes the fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You 
may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are 
not reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145557">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145558">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145559"
      unitRef="pure">0.0018</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145560"
      unitRef="pure">0.0004</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145561"
      unitRef="pure">0.0017</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145562"
      unitRef="pure">0.0039</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="_666_"
      unitRef="pure">-0.0015</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145564"
      unitRef="pure">0.0024</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145565">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-77998">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This Example is meant to 
help you compare the cost of investing in the Portfolio with the cost of investing in other funds. The 
Example assumes that you invest $10,000 in the Portfolio for the time periods indicated. The Example 
also assumes that your investment has a 5% return each year and that the Portfolio&#x2019;s operating expenses 
remain the same. The costs for the Portfolio reflect the net expenses of the Portfolio that result from 
the contractual expense waiver in the first year only. Although your actual costs may be higher or lower, 
based on these assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145566"
      unitRef="usd">25</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145567"
      unitRef="usd">25</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145568"
      unitRef="usd">110</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145569"
      unitRef="usd">110</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145570"
      unitRef="usd">204</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145571"
      unitRef="usd">204</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145572"
      unitRef="usd">204</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145573"
      unitRef="usd">478</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145574"
      unitRef="usd">478</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145575"
      unitRef="usd">478</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145576">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-78025">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund 
generally pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns 
over&#x201d; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result 
in higher taxes when fund shares are held in a taxable account. The Portfolio does not pay transaction 
costs when buying and selling shares of other funds managed by Dimensional Fund Advisors LP (the &#x201c;Underlying 
Funds&#x201d;); however, the Underlying Funds pay transaction costs when buying and selling securities for 
their portfolio. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, 
affect the Portfolio&#x2019;s performance. During the most recent fiscal year, the Portfolio's portfolio turnover 
rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;10%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; of the average value of 
its investment portfolio. &lt;/span&gt;&lt;/p&gt;
</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145577"
      unitRef="pure">0.10</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145578"> 
Principal Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-78038">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
25/75 Portfolio is a &#x201c;fund of funds&#x201d;, which means that the Portfolio generally allocates its assets 
among other funds managed by Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;), although it has the ability 
to invest directly in securities and derivatives. The Portfolio&#x2019;s allocates the majority of its assets 
to fixed income Underlying Funds, but the Portfolio also allocates a small portion of its assets to domestic 
and international equity Underlying Funds. To achieve the Portfolio&#x2019;s and the Underlying Funds&#x2019; investment 
objectives, the Advisor implements an integrated investment approach that combines research, portfolio 
design, portfolio management, and trading functions. As further described below, the Portfolio&#x2019;s and 
the Underlying Funds&#x2019; designs emphasize long-term drivers of expected returns identified by the Advisor&#x2019;s 
research, while balancing risk through broad diversification across companies, sectors, and countries. 
The Advisor&#x2019;s portfolio management and trading processes further balance those long-term drivers of 
expected returns with shorter-term drivers of expected returns and trading costs.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Generally, 
the Portfolio invests its assets in domestic and international equity Underlying Funds and fixed income 
Underlying Funds to achieve an allocation of approximately 5% to 45% (with a target allocation of approximately 
25%) of the Portfolio&#x2019;s assets to domestic and international equity Underlying Funds and approximately 
55% to 95% (with a target allocation of approximately 75%) of the Portfolio&#x2019;s assets to fixed income 
Underlying Funds. Periodically the Advisor will review the allocations for the Portfolio in each Underlying 
Fund and may adjust allocations to the Underlying Funds or may add or remove Underlying Funds in the 
Portfolio without notice to shareholders.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;In addition to its allocation 
strategy of providing exposure to the domestic and international equity and fixed income markets through 
investment in the Underlying Funds, the 25/75 Portfolio further diversifies its investment portfolio 
by allocating its assets among Underlying Funds that represent a variety of different asset classes. 
As of February 28, 2026, the Portfolio invests in: (1) fixed income Underlying Funds that may purchase 
U.S. and foreign debt securities such as obligations issued or guaranteed by the U.S. and foreign governments, 
their agencies and instrumentalities, bank obligations, commercial paper, repurchase agreements, money 
market funds, obligations of other domestic and foreign issuers, securities of domestic or foreign issuers 
denominated in U.S. dollars but not trading in the United States, obligations of supranational organizations 
and inflation-protected securities; (2) domestic equity Underlying Funds that purchase a broad and diverse 
portfolio of securities of U.S. operating companies of all market capitalization sizes with a moderate 
to meaningful emphasis on smaller capitalization, lower relative price, and higher profitability companies 
and a domestic equity Underlying Fund that primarily invests in publicly traded REITs; and (3) international 
equity Underlying Funds that purchase a broad and diverse portfolio of securities of companies in developed 
and emerging markets of all market capitalization sizes with a meaningful emphasis on smaller capitalization, 
lower relative price, and higher profitability companies and an international equity Underlying Fund 
that primarily invests in publicly traded REITs and REIT-like entities.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Portfolio, directly or indirectly through its investment in the Underlying Funds, intends to invest its 
assets to gain exposure to at least three different countries, including the United States. As of the 
date of the Prospectus, the Portfolio, directly or indirectly through its investment in the Underlying 
Funds, invests approximately 45% of its net assets in U.S. companies or issuers. This percentage will 
change due to market conditions.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Advisor may also increase or reduce 
the 25/75 Portfolio&#x2019;s and/or Underlying Funds&#x2019; exposure to an eligible company, or exclude a company, 
based on shorter-term considerations, such as a company&#x2019;s price momentum, short-run reversals, and 
investment characteristics. In assessing a company&#x2019;s investment characteristics, the Advisor considers 
ratios such as recent changes in assets divided by total assets. The criteria the Advisor uses for assessing 
a company&#x2019;s investment characteristics are subject to change from time to time. In addition, the Advisor 
seeks to reduce trading costs using a flexible trading approach that looks for opportunities to participate 
in the available market liquidity, while managing turnover and explicit transaction costs.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
25/75 Portfolio and each Underlying Fund may purchase or sell futures contracts and options on futures 
contracts, to increase or decrease market exposure based on actual or expected cash inflows to or outflows 
from the Portfolio or Underlying Fund. Certain Underlying Funds may enter into foreign currency exchange 
transactions, including foreign currency forward contracts, in connection with the settlement of foreign 
securities, to hedge foreign currency risks, to hedge against fluctuations in currency exchange rates, 
or to transfer balances from one currency to another. Certain fixed income Underlying Funds also may 
enter into credit default swaps on issuers or indices to buy or sell credit protection to hedge credit 
exposure; gain market or issuer exposure without owning the underlying securities; or increase the Underlying 
Fund&#x2019;s total return. Certain fixed income Underlying Funds also &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;may purchase or sell futures contracts and options on futures contracts, to hedge 
interest rate or currency exposure or for non-hedging purposes, such as a substitute for direct investment 
or to increase or decrease market exposure, including adjustments based on actual or expected cash inflows 
to or outflows from the Underlying Fund. Certain fixed income Underlying Funds may use derivatives to 
establish short positions for individual securities, markets, or currencies, in order to adjust the Underlying 
Fund&#x2019;s duration or to replace more traditional direct investments. Also the Portfolio and Underlying 
Funds may lend their portfolio securities to generate additional income.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A 
summary of the investment strategies and policies of the Underlying Funds in which the 25/75 Portfolio 
invests as of the date of this Prospectus is described in the Portfolio&#x2019;s Prospectus in the section 
entitled &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;&#x201c;ADDITIONAL INFORMATION ON INVESTMENT OBJECTIVES AND POLICIES&#x2014;Investments 
in Underlying Funds.&#x201d;&lt;/span&gt;&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_PrincipalRisks2_S000001018Summary72Member"
      id="ixv-78053">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x25x6"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money. 
An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency. The following is a description of principal 
risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_RiskLoseMoneyMember_S000001018Summary72Member"
      id="ixv-145579">Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_RiskNotInsuredMember_S000001018Summary72Member"
      id="ixv-145580">An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_FundofFundsRisk2_S000001018Summary72Member"
      id="ixv-78059">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Fund of Funds 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The investment performance of a fund of funds is affected 
by the investment performance of the underlying funds in which the fund of funds invests. The ability 
of a fund of funds to achieve its investment objective depends on the ability of the underlying funds 
to meet their investment objectives and on the Advisor&#x2019;s decisions regarding the allocation of a fund 
of funds&#x2019; assets among the underlying funds. A fund of funds may allocate assets to an underlying fund 
or asset class that underperforms other funds or asset classes.  There can be no assurance that the investment 
objective of a fund of funds or any underlying fund will be achieved. Through its investments in the 
underlying funds, a fund of funds is subject to the risks of the underlying funds&#x2019; investments. When 
a fund of funds invests in underlying funds, investors are exposed to a proportionate share of the expenses 
of those underlying funds in addition to the expenses of a fund of funds. Certain risks of the Underlying 
Funds&#x2019; investments that are principal risks of investing in the Portfolio are described below.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_MarketRisk2_S000001018Summary72Member"
      id="ixv-78064">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of securities, and a fund that owns them, to rise or fall.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_EquityMarketRisk2_S000001018Summary72Member"
      id="ixv-78069">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of equity securities, and a fund that owns them, to rise or fall. Stock 
markets are volatile, with periods of rising prices and periods of falling prices.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_ForeignSecuritiesandCurrenciesRisk2_S000001018Summary72Member"
      id="ixv-78074">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Securities and Currencies Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Foreign securities prices 
may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or 
(b) less regulated or liquid securities markets. Investors holding these securities may also be exposed 
to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. 
dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, 
changing its value against the U.S. dollar).&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Foreign issuers may not 
be subject to uniform accounting, auditing and financial reporting standards and there may be less reliable 
and publicly available financial and other information about such issuers, as compared to U.S. issuers. 
A fund may have greater difficulty voting proxies, exercising shareholder rights, securing dividends 
and/or interest and obtaining information regarding corporate actions on a timely basis, pursuing legal 
remedies, and obtaining judgments with respect to foreign investments in foreign courts than with respect 
to domestic issuers in U.S. courts.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Depositary receipts are generally subject 
to the same risks as the foreign securities that they evidence or into which they may be converted. In 
addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered 
depositary receipts, are under no obligation to distribute shareholder communications to the holders 
of such receipts, or to pass through to them any voting rights with respect to the deposited securities. 
Depositary receipts that are not sponsored by the issuer may be less liquid and there may be less readily 
available public information about the issuer.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_ForeignGovernmentDebtRisk2_S000001018Summary72Member"
      id="ixv-78084">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Government Debt Risk&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt;: &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
risk that: (a) the governmental entity that controls the repayment of government debt may not be willing 
or able to repay the principal and/or to pay the interest when it becomes due, due to factors such as 
political considerations, the relative size of the governmental entity&#x2019;s debt position in relation 
to the economy, cash flow problems, insufficient foreign currency reserves, the failure to put in place 
economic reforms required by the International Monetary Fund or other multilateral agencies, and/or other 
national economic factors; (b) governments may default on their debt securities, which may require holders 
of such securities to participate in debt rescheduling; and (c) there is no legal or bankruptcy process 
by which defaulted government debt may be collected in whole or in part.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_SmallandMid-CapCompanyRisk2_S000001018Summary72Member"
      id="ixv-78089">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Small and Mid-Cap Company Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities of small and 
mid-cap companies are often less liquid than those of large companies and this could make it difficult 
to sell a small or mid-cap company security at a desired time or price. As a result, small and mid-cap 
company stocks may fluctuate relatively more in price. In general, small and mid-capitalization companies 
are also more vulnerable than larger companies to adverse business or economic developments and they 
may have more limited resources.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_ProfitabilityInvestmentRisk2_S000001018Summary72Member"
      id="ixv-78094">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Profitability 
Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; High relative profitability stocks may perform differently 
from the market as a whole and an investment strategy purchasing these securities may cause a fund to 
at times underperform equity funds that use other investment strategies.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_ValueInvestmentRisk2_S000001018Summary72Member"
      id="ixv-78098">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Value Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Value stocks may perform 
differently from the market as a whole and an investment strategy purchasing these securities may cause 
a fund to at times underperform equity funds that use other investment strategies. Value stocks can react 
differently to political, economic, and industry developments than the market as a whole and other types 
of stocks. Value stocks also may underperform the market for long periods of time.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_EmergingMarketsRisk2_S000001018Summary72Member"
      id="ixv-78103">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Emerging Markets Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities of issuers associated 
with emerging market countries may be subject to higher and additional risks than securities of issuers 
in developed foreign markets.&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Numerous emerging market countries 
have a history of, and continue to experience serious, and potentially continuing, economic and political 
problems. Stock markets in many emerging market countries are relatively small, expensive to trade in 
and generally have higher risks than those in developed markets. Securities in emerging markets also 
may be less liquid than those in developed markets and foreigners are often limited in their ability 
to invest in, and withdraw assets from, these markets. Additional restrictions may be imposed under other 
conditions. Frontier market countries generally have smaller economies or less developed capital markets 
and, as a result, the risks of investing in emerging market countries are magnified in frontier market 
countries.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_InterestRateRisk2_S000001018Summary72Member"
      id="ixv-78110">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Interest Rate Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:AdvP3F2712; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Fixed income securities are subject to interest rate risk because the prices of 
fixed income securities tend to move in the opposite direction of interest rates. When interest rates 
rise, fixed income security prices fall. During periods of very low or negative interest rates, a fund 
may be subject to a greater risk of rising interest rates. When interest rates fall, fixed income security 
prices rise. In general, fixed income securities with longer maturities are more sensitive to changes 
in interest rates.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_CreditRisk2_S000001018Summary72Member"
      id="ixv-78115">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Credit Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Credit 
risk is the risk that the issuer of a security may be unable to make interest payments and/or repay principal 
when due. A downgrade to an issuer&#x2019;s credit rating or a perceived change in an issuer&#x2019;s financial 
strength may affect a security&#x2019;s value, and thus, impact the performance of a fund holding such securities. 
Government agency obligations have different levels of credit support and, therefore, different degrees 
of credit risk. Securities issued by agencies and instrumentalities of the U.S. Government that are supported 
by the full faith and credit of the United States, such as the Federal Housing Administration and Ginnie 
Mae, present little credit risk. Other securities issued by agencies and instrumentalities sponsored 
by the U.S. Government, that are supported only by the issuer&#x2019;s right to borrow from the U.S. Treasury, 
subject to certain limitations, and securities issued by agencies and instrumentalities sponsored by 
the U.S. Government that are sponsored by the credit of the issuing agencies, such as Freddie Mac and 
Fannie Mae, are subject to a greater degree of credit risk. U.S. government agency securities issued 
or guaranteed by the credit of the agency may still involve a risk of non-payment of principal and/or 
interest. Credit risk is greater for fixed income securities with ratings below investment grade (e.g., 
BB+ or below by S&amp;amp;P or Fitch or Ba1 or below by Moody&#x2019;s). Fixed income securities that are below 
investment grade involve high credit risk and are considered speculative. Below investment grade fixed 
income securities may also fluctuate in value more than higher quality fixed income securities and, during 
periods of market volatility, may be more difficult to sell at the time and price a fund desires.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_IncomeRisk2_S000001018Summary72Member"
      id="ixv-78123">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Income Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Income 
risk is the risk that falling interest rates will cause a fund&#x2019;s income to decline because, among other 
reasons, the proceeds from maturing short-term securities in its portfolio may be reinvested in lower-yielding 
securities.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_CallRisk2_S000001018Summary72Member"
      id="ixv-78128">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Call Risk&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt;: &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Call 
risk is the risk that during periods of falling interest rates, an issuer will call or repay a higher-yielding 
fixed income security before its maturity date, forcing a fund to reinvest in fixed income securities 
with lower interest rates than the original obligations.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_DerivativesRisk2_S000001018Summary72Member"
      id="ixv-78133">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, 
such as swaps, futures contracts, and options thereon, and foreign currency forward contracts, whose 
value is derived from that of other assets, rates or indices. Derivatives can be used for hedging (attempting 
to reduce risk by offsetting one investment position with another) or non-hedging purposes. Hedging with 
derivatives may increase expenses, and there is no guarantee that a hedging strategy will work. While 
hedging can reduce or eliminate losses, it can also reduce or eliminate gains or cause losses if the 
market moves in a manner different from that anticipated by a fund or if the cost of the derivative outweighs 
the benefit of the hedge. In regard to currency hedging, it is generally not possible to precisely match 
the foreign currency exposure of such foreign currency forward contracts to the value of the securities 
involved due to fluctuations in the market values of such securities and cash flows into and out of a 
fund between the date a foreign currency forward contract is entered into and the date it expires. The 
use of derivatives for non-hedging purposes may be considered to carry more risk than other types of 
investments. When a fund uses derivatives, the fund will be directly exposed to the risks of those derivatives. 
Derivative instruments are subject to a number of risks including counterparty, liquidity, interest rate, 
market, credit and management risks, as well as difficulties with respect to valuation. Changes in the 
value of a derivative may not correlate perfectly with the underlying asset, rate or index, and a fund 
could lose more than the principal amount invested. Additional risks are associated with the use of swaps 
including counterparty and credit risk (the risk that the other party to a swap agreement will not fulfill 
its contractual obligations, whether because of bankruptcy or other default) and liquidity risk (the 
possible lack of a secondary market for the swap agreement). Credit risk increases when a fund is the 
seller of swaps and counterparty risk increases when the fund is a buyer of swaps. In addition, where 
a fund is the seller of swaps, it may be required to liquidate portfolio securities at inopportune times 
in order to meet payment obligations. Swaps may be illiquid or difficult to value. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_LiquidityRisk2_S000001018Summary72Member"
      id="ixv-78137">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Liquidity Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Liquidity risk exists when 
particular portfolio investments are difficult to purchase or sell. To the extent that a fund holds illiquid 
investments, the fund&#x2019;s performance may be reduced due to an inability to sell the investments at opportune 
prices or times. Liquid portfolio investments may become illiquid or less liquid after purchase by a 
fund due to low trading volume, adverse investor perceptions, credit tightening and/or other market developments. 
Liquidity risk includes the risk that a fund will experience significant net redemptions at a time when 
it cannot find willing buyers for its portfolio securities or can only sell its portfolio securities 
at a material loss or at increased costs. Liquidity risk can be more pronounced in periods of market 
turmoil or in situations where ownership of shares of a fund are concentrated in one or a few investors. 
Investments that are illiquid or that trade in lower volumes may be more difficult to value. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_SecuritiesLendingRisk2_S000001018Summary72Member"
      id="ixv-78142">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Securities lending involves 
the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, 
a fund may lose money and there may be a delay in recovering the loaned securities. A fund could also 
lose money if it does not recover the securities and/or the value of the collateral falls, including 
the value of investments made with cash collateral. Securities lending also may have certain adverse 
tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_OperationalRisk2_S000001018Summary72Member"
      id="ixv-78146">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, system changes, faults 
in communication, and failures in systems, technology, or processes, and the use of artificial intelligence 
and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances are outside a fund&#x2019;s or 
its advisor&#x2019;s control, including instances at third parties. A fund and its advisor seek to reduce 
these operational risks through controls and procedures. However, measures that seek to reduce these 
operational risks through controls and procedures may not address every possible risk and may be inadequate 
to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_CyberSecurityRisk2_S000001018Summary72Member"
      id="ixv-78151">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber Security 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; use of internet, technology 
and information systems may expose the fund to potential risks linked to cyber security breaches of those 
technological or information systems. Cyber security breaches, amongst other things, could allow an unauthorized 
party to gain access to proprietary information, customer data, or fund assets, or cause the fund and/or 
its service providers to suffer data corruption or lose operational functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145581"> 
Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-78164">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The bar chart and table 
immediately following illustrate the variability of the Portfolio&#x2019;s returns and are meant to provide 
some indication of the risks of investing in the Portfolio. The bar chart shows the changes in the Portfolio&#x2019;s 
performance from year to year. The table illustrates how annualized returns for certain periods, both 
before and after taxes, compare with those of a broad measure of market performance. The table also includes 
the performance of additional indexes with similar investment universes of the Portfolio, or certain 
portions of the Portfolio. The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results. Updated performance information for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes. 
Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown in the 
table. In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145582">The bar chart and table 
immediately following illustrate the variability of the Portfolio&#x2019;s returns and are meant to provide 
some indication of the risks of investing in the Portfolio. The bar chart shows the changes in the Portfolio&#x2019;s 
performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145583"> The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145584">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145585">The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145586">In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145587">Global 
Allocation 25/75 Portfolio&#x2005;Institutional Class Shares 
&#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      id="ixv-145588">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      id="ixv-145589">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145590"
      unitRef="pure">0.0661</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      id="ixv-145591">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145592"
      unitRef="pure">-0.0618</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      id="ixv-145593">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145594">Annualized 
Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002772Member_S000001018Member_S000001018Summary72Member"
      id="ixv-145595">Return 
Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145596"
      unitRef="pure">0.0867</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145597"
      unitRef="pure">0.0430</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145598"
      unitRef="pure">0.0480</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      id="ixv-145599">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145600"
      unitRef="pure">0.0671</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145601"
      unitRef="pure">0.0278</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145602"
      unitRef="pure">0.0362</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      id="ixv-145603">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145604"
      unitRef="pure">0.0564</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145605"
      unitRef="pure">0.0288</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002772Member_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145606"
      unitRef="pure">0.0340</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_Global2575CompositeIndex3238_S000001018Member_S000001018Summary72Member"
      id="_747_">Global 25/75 Composite Index1</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145608">(reflects 
no deduction for fees, expenses or taxes on sales)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_Global2575CompositeIndex3239_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145609"
      unitRef="pure">0.0898</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_Global2575CompositeIndex3239_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145610"
      unitRef="pure">0.0441</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_Global2575CompositeIndex3239_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145611"
      unitRef="pure">0.0452</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_SPGlobalBMIIndexnetdividends3240_S000001018Member_S000001018Summary72Member"
      id="ixv-145612">S&amp;P Global BMI Index (net dividends)</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_SPGlobalBMIIndexnetdividends3241_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145613"
      unitRef="pure">0.2196</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_SPGlobalBMIIndexnetdividends3241_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145614"
      unitRef="pure">0.1050</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_SPGlobalBMIIndexnetdividends3241_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145615"
      unitRef="pure">0.1128</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3242_S000001018Member_S000001018Summary72Member"
      id="_757_">ICE BofA 1-3 Year Global 
Government Index (hedged to USD)2</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3243_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145617"
      unitRef="pure">0.0484</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3243_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145618"
      unitRef="pure">0.0223</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_ICEBofA1-3YearGlobalGovernmentIndexhedgedtoUSD3243_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145619"
      unitRef="pure">0.0209</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_BloombergGlobalAggregateBondIndexhedgedtoUSD3244_S000001018Member_S000001018Summary72Member"
      id="ixv-145620">Bloomberg Global Aggregate Bond Index 
(hedged to USD)</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_BloombergGlobalAggregateBondIndexhedgedtoUSD3245_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145621"
      unitRef="pure">0.0486</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_BloombergGlobalAggregateBondIndexhedgedtoUSD3245_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145622"
      unitRef="pure">0.0034</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_BloombergGlobalAggregateBondIndexhedgedtoUSD3245_S000001018Member_S000001018Summary72Member"
      decimals="INF"
      id="ixv-145623"
      unitRef="pure">0.0239</oef:AvgAnnlRtrPct>
    <oef:PerformanceAdditionalMarketIndex
      contextRef="Context_20251031_20251031_S000001018Member_S000001018Summary72Member"
      id="ixv-145624">The Global 25/75 Composite Index is an 
unmanaged hypothetical index composed of 25% S&amp;P Global BMI Index (net dividends) and 75% ICE BofA 
1-3 Year Global Government Index (hedged to USD).</oef:PerformanceAdditionalMarketIndex>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145625"> U.S. Large Cap Value Portfolio 
III</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145626"> Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-81931">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the U.S. Large Cap Value Portfolio III (the &#x201c;Portfolio&#x201d;) is to achieve long-term 
capital appreciation. The Portfolio is a Feeder Portfolio and pursues its objective by investing substantially 
all of its assets in its corresponding Master Fund, The U.S. Large Cap Value Series (the &#x201c;U.S. Value 
Series&#x201d; or the &#x201c;Series&#x201d;) of The DFA Investment Trust Company (the &#x201c;Trust&#x201d;), which has the same 
investment objective and policies as the Portfolio.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145627"> Fees 
and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-81938">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the 
fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may 
pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not 
reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145628">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145629">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="_774_"
      unitRef="pure">0.0021</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="_775_"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="_776_"
      unitRef="pure">0.0024</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="_777_"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="_778_"
      unitRef="pure">0.0014</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145635">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-82020">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This 
Example is meant to help you compare the cost of investing in the Portfolio with the cost of investing 
in other funds. The Example reflects the aggregate annual operating expenses of the Portfolio and its 
portion of the expenses of the Series. The Example assumes that you invest $10,000 in the Portfolio for 
the time periods indicated. The Example also assumes that your investment has a 5% return each year and 
that the Portfolio&#x2019;s operating expenses remain the same. Although your actual costs may be higher or 
lower, based on these assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145636"
      unitRef="usd">14</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145637"
      unitRef="usd">14</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145638"
      unitRef="usd">45</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145639"
      unitRef="usd">45</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145640"
      unitRef="usd">79</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145641"
      unitRef="usd">79</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145642"
      unitRef="usd">79</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145643"
      unitRef="usd">179</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145644"
      unitRef="usd">179</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145645"
      unitRef="usd">179</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145646">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-82047">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund 
generally pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns 
over&#x201d; its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result 
in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected 
in Annual Fund Operating Expenses or in the Example, affect the Portfolio&#x2019;s performance. During the 
most recent fiscal year, the Series' portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;8%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;

</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145647"
      unitRef="pure">0.08</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145648"> Principal Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-82061">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
Portfolio pursues its investment objective by investing substantially all of its assets in the U.S. Value 
Series. To achieve the Portfolio&#x2019;s and the Series&#x2019; investment objectives, Dimensional Fund Advisors 
LP (the &#x201c;Advisor&#x201d;) implements an integrated investment approach that combines research, portfolio 
design, portfolio management, and trading functions. As further described below, the Series&#x2019; design 
emphasizes long-term drivers of expected returns identified by the Advisor&#x2019;s research, while balancing 
risk through broad diversification across companies and sectors. The Advisor&#x2019;s portfolio management 
and trading processes further balance those long-term drivers of expected returns with shorter-term drivers 
of expected returns and trading costs.&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The U.S. Value Series is designed to purchase 
a broad and diverse group of readily marketable securities of large U.S. companies that the Advisor determines 
to be lower relative price stocks. A company&#x2019;s market capitalization is the number of its shares outstanding 
times its price per share. Under a market capitalization weighted approach, companies with higher market 
capitalizations generally represent a larger proportion of the Series than companies with relatively 
lower market capitalizations. The Advisor may overweight certain stocks, including smaller companies, 
lower relative price stocks, and/or higher profitability stocks within the large-cap value segment of 
the U.S. market. An equity issuer is considered to have a low relative price (i.e., a value stock) primarily 
because it has a low price in relation to its book value. In assessing relative price, the Advisor may 
consider additional factors such as price to cash flow or price to earnings ratios. An equity issuer 
is considered to have high profitability because it has high earnings or profits from operations in relation 
to its book value or assets. The criteria the Advisor uses for assessing relative price and profitability 
are subject to change from time to time.&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;As a non-fundamental policy, under normal 
circumstances, the U.S. Value Series will invest at least 80% of its net assets in securities of large 
cap U.S. companies. The Advisor generally defines a U.S. company as one that is listed and principally 
traded on a securities exchange in the United States that is deemed appropriate by the Advisor. As of 
the date of this Prospectus, for purposes of the Series, the Advisor considers large cap companies to 
be companies whose market capitalizations are generally in the highest 90% of total market capitalization 
or companies whose market capitalizations are larger than or equal to the 1,000th largest U.S. company, 
whichever results in the higher market capitalization break. Total market capitalization is based on 
the market capitalization of eligible U.S. operating companies listed on a securities exchange in the 
United States that is deemed appropriate by the Advisor. Under the Advisor&#x2019;s market capitalization 
guidelines described above, based on market capitalization data as of December 31, 2025, the market capitalization 
of a large cap company would be $16,768 million or above. This threshold will change due to market conditions.&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The 
Advisor may also increase or reduce the U.S. Value Series&#x2019; exposure to an eligible company, or exclude 
a company, based on shorter-term considerations, such as a company&#x2019;s price momentum and short-run reversals. 
In addition, the Advisor seeks to reduce trading costs using a flexible trading approach that looks for 
opportunities to participate in the available market liquidity, while managing turnover and explicit 
transaction costs.&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Serif; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;The U.S. Value Series and the Portfolio each may purchase 
or sell futures contracts and options on futures contracts for U.S. equity securities and indices to 
increase or decrease equity market exposure based on actual or expected cash inflows to or outflows from 
the Series or Portfolio.&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The U.S. Value Series may lend its portfolio securities to 
generate additional income.&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_PrincipalRisks2_S000001019Summary74Member"
      id="ixv-82073">&lt;p style="-sec-ix-redline:true;font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x15x7"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money. 
An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency. The following is a description of principal 
risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_RiskLoseMoneyMember_S000001019Summary74Member"
      id="ixv-145649">Because 
the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_RiskNotInsuredMember_S000001019Summary74Member"
      id="ixv-145650">An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by the Federal 
Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_EquityMarketRisk2_S000001019Summary74Member"
      id="ixv-82079">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment approach cannot guarantee a profit. 
Economic, market, environmental, political, and issuer-specific conditions and events will cause the 
value of equity securities, and a fund that owns them, to rise or fall. Stock markets are volatile, with 
periods of rising prices and periods of falling prices.&lt;/span&gt;&lt;/p&gt;
</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_ValueInvestmentRisk2_S000001019Summary74Member"
      id="ixv-82087">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Value Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Value 
stocks may perform differently from the market as a whole and an investment strategy purchasing these 
securities may cause a fund to at times underperform equity funds that use other investment strategies. 
Value stocks can react differently to political, economic, and industry developments than the market 
as a whole and other types of stocks. Value stocks also may underperform the market for long periods 
of time.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_ProfitabilityInvestmentRisk2_S000001019Summary74Member"
      id="ixv-82092">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Profitability Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
High relative profitability stocks may perform differently from the market as a whole and an investment 
strategy purchasing these securities may cause a fund to at times underperform equity funds that use 
other investment strategies.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_DerivativesRisk2_S000001019Summary74Member"
      id="ixv-82096">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, such as futures contracts, and options thereon, 
whose value is derived from that of other assets, rates or indices. The use of derivatives for non-hedging 
purposes may be considered to carry more risk than other types of investments. When a fund uses derivatives, 
the fund will be directly exposed to the risks of those derivatives. Derivative instruments are subject 
to a number of risks including counterparty, liquidity, interest rate, market, credit and management 
risks, as well as difficulties with respect to valuation. Changes in the value of a derivative may not 
correlate perfectly with the underlying asset, rate or index, and a fund could lose more than the principal 
amount invested. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_SecuritiesLendingRisk2_S000001019Summary74Member"
      id="ixv-82100">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Securities lending involves the risk that the borrower may fail to return the securities in a timely 
manner or at all. As a result, a fund may lose money and there may be a delay in recovering the loaned 
securities. A fund could also lose money if it does not recover the securities and/or the value of the 
collateral falls, including the value of investments made with cash collateral. Securities lending also 
may have certain adverse tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_OperationalRisk2_S000001019Summary74Member"
      id="ixv-82104">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, 
system changes, faults in communication, and failures in systems, technology, or processes, and the use 
of artificial intelligence and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances 
are outside a fund&#x2019;s or its advisor&#x2019;s control, including instances at third parties. A fund and its 
advisor seek to reduce these operational risks through controls and procedures. However, measures that 
seek to reduce these operational risks through controls and procedures may not address every possible 
risk and may be inadequate to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_CyberSecurityRisk2_S000001019Summary74Member"
      id="ixv-82109">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber 
Security Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; 
use of internet, technology and information systems may expose the fund to potential risks linked to 
cyber security breaches of those technological or information systems. Cyber security breaches, amongst 
other things, could allow an unauthorized party to gain access to proprietary information, customer data, 
or fund assets, or cause the fund and/or its service providers to suffer data corruption or lose operational 
functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145651"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-82119">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The table also includes the performance of an additional index with a similar investment 
universe as the Portfolio. The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results. Updated performance information for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes. 
Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown in the 
table. In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145652">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145653"> The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145654">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145655">The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145656">In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145657">U.S. 
Large Cap Value Portfolio III&#x2005;Institutional Class Shares 
&#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      id="ixv-145658">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      id="ixv-145659">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145660"
      unitRef="pure">0.1850</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      id="ixv-145661">2020-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145662"
      unitRef="pure">-0.3147</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      id="ixv-145663">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145664">Annualized Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002773Member_S000001019Member_S000001019Summary74Member"
      id="ixv-145665">Return 
Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145666"
      unitRef="pure">0.1643</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145667"
      unitRef="pure">0.1213</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145668"
      unitRef="pure">0.1077</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      id="ixv-145669">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145670"
      unitRef="pure">0.1591</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145671"
      unitRef="pure">0.1100</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145672"
      unitRef="pure">0.0942</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      id="ixv-145673">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145674"
      unitRef="pure">0.1005</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145675"
      unitRef="pure">0.0945</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002773Member_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145676"
      unitRef="pure">0.0846</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_Russell1000ValueIndex3252_S000001019Member_S000001019Summary74Member"
      id="ixv-145677">Russell 1000&#xae; 
Value Index</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001019Member_S000001019Summary74Member"
      id="ixv-145678">(reflects 
no deduction for fees, expenses or taxes)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_Russell1000ValueIndex3253_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145679"
      unitRef="pure">0.1591</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_Russell1000ValueIndex3253_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145680"
      unitRef="pure">0.1133</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_Russell1000ValueIndex3253_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145681"
      unitRef="pure">0.1053</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_Russell1000Index3254_S000001019Member_S000001019Summary74Member"
      id="ixv-145682">Russell 1000&#xae; 
Index</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_Russell1000Index3255_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145683"
      unitRef="pure">0.1737</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_Russell1000Index3255_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145684"
      unitRef="pure">0.1359</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_Russell1000Index3255_S000001019Member_S000001019Summary74Member"
      decimals="INF"
      id="ixv-145685"
      unitRef="pure">0.1459</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145686"> DFA International Value Portfolio 
III</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145687"> Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-82470">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the DFA International Value Portfolio III (the &#x201c;International Value Portfolio&#x201d; 
or the &#x201c;Portfolio&#x201d;) is to achieve long-term capital appreciation. The International Value Portfolio 
is a Feeder Portfolio and pursues its objective by investing substantially all of its assets in its corresponding 
Master Fund, The DFA International Value Series (the &#x201c;International Value Series&#x201d; or the &#x201c;Series&#x201d;) 
of The DFA Investment Trust Company (the &#x201c;Trust&#x201d;), which has the same investment objective and policies 
as the Portfolio.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145688"> Fees and Expenses of the 
Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-82477">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This table describes the fees and expenses 
you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You may pay other fees, such 
as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table 
and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145689">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145690">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="_864_"
      unitRef="pure">0.0041</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="_865_"
      unitRef="pure">0.0003</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="_866_"
      unitRef="pure">0.0044</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="_867_"
      unitRef="pure">-0.0020</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="_868_"
      unitRef="pure">0.0024</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145696">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-82559">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This 
Example is meant to help you compare the cost of investing in the Portfolio with the cost of investing 
in other funds. The Example reflects the aggregate annual operating expenses of the Portfolio and its 
portion of the expenses of the Series. The Example assumes that you invest $10,000 in the Portfolio for 
the time periods indicated. The Example also assumes that your investment has a 5% return each year and 
that the Portfolio&#x2019;s operating expenses remain the same. Although your actual costs may be higher or 
lower, based on these assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145697"
      unitRef="usd">25</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145698"
      unitRef="usd">25</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145699"
      unitRef="usd">77</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145700"
      unitRef="usd">77</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145701"
      unitRef="usd">135</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145702"
      unitRef="usd">135</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145703"
      unitRef="usd">135</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145704"
      unitRef="usd">306</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145705"
      unitRef="usd">306</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145706"
      unitRef="usd">306</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145707">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-82586">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;A fund generally pays 
transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). 
A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when 
fund shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating 
Expenses or in &lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;the Example, affect the Portfolio&#x2019;s performance. During 
the most recent fiscal year, the Series' portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;13%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145708"
      unitRef="pure">0.13</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145709"> Principal 
Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-82601">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The International Value Portfolio invests substantially all 
of its assets in the International Value Series. To achieve the Portfolio&#x2019;s and Series&#x2019; investment 
objectives, Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) implements an integrated investment approach 
that combines research, portfolio design, portfolio management, and trading functions. As further described 
below, the Series&#x2019; design emphasizes long-term drivers of expected returns identified by the Advisor&#x2019;s 
research, while balancing risk through broad diversification across companies, sectors, and countries. 
The Advisor&#x2019;s portfolio management and trading processes further balance those long-term drivers of 
expected returns with shorter-term drivers of expected returns and trading costs.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
International Value Series is designed to purchase securities of large non-U.S. companies in countries 
with developed markets that the Advisor determines to be lower relative price stocks. A company&#x2019;s market 
capitalization is the number of its shares outstanding times its price per share. Under a market capitalization 
weighted approach, companies with higher market capitalizations generally represent a larger proportion 
of the Series than companies with relatively lower market capitalizations. The Advisor may overweight 
certain stocks, including smaller companies, lower relative price stocks, and/or higher profitability 
stocks within the large-cap value segment of developed ex U.S. markets. An equity issuer is considered 
to have a low relative price (i.e., a value stock) primarily because it has a low price in relation to 
its book value. In assessing relative price, the Advisor may consider additional factors such as price 
to cash flow or price to earnings ratios. An equity issuer is considered to have high profitability because 
it has high earnings or profits from operations in relation to its book value or assets. The criteria 
the Advisor uses for assessing relative price and profitability are subject to change from time to time.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
International Value Series intends to purchase securities of large companies associated with developed 
market countries that the Advisor has designated as approved markets. The Advisor determines the minimum 
market capitalization of a large company with respect to each country or region in which the Series invests. 
Based on market capitalization data as of December 31, 2025, for the Series, the market capitalization 
of a large company in any country or region in which the Series invests would be $1,852 million or above. 
This threshold will change due to market conditions.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Advisor may also increase 
or reduce the International Value Series&#x2019; exposure to an eligible company, or exclude a company, based 
on shorter-term considerations, such as a company&#x2019;s price momentum and short-run reversals. In addition, 
the Advisor seeks to reduce trading costs using a flexible trading approach that looks for opportunities 
to participate in the available market liquidity, while managing turnover and explicit transaction costs.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
International Value Series may gain exposure to companies associated with approved markets by purchasing 
equity securities in the form of depositary receipts, which may be listed or traded outside the issuer&#x2019;s 
domicile country. The Series and the International Value Portfolio each may purchase or sell futures 
contracts and options on futures contracts for foreign or U.S. equity securities and indices to increase 
or decrease equity market exposure based on actual or expected cash inflows to or outflows from the Series 
or Portfolio. Because many of the Series&#x2019; and Portfolio&#x2019;s investments may be denominated in foreign 
currencies, the Series and the Portfolio may enter into foreign currency exchange transactions, including 
foreign currency forward contracts, in connection with the settlement of foreign securities or to transfer 
cash balances from one currency to another currency.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The International Value 
Series may lend its portfolio securities to generate additional income.&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_PrincipalRisks2_S000001025Summary75Member"
      id="ixv-82608">&lt;p style="-sec-ix-redline:true;font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x25x7"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal 
Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money. An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The 
following is a description of principal risks of investing in the Portfolio.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_RiskLoseMoneyMember_S000001025Summary75Member"
      id="ixv-145710">Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_RiskNotInsuredMember_S000001025Summary75Member"
      id="ixv-145711">An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_EquityMarketRisk2_S000001025Summary75Member"
      id="ixv-82614">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of equity securities, and a &lt;/span&gt;&lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;fund that owns them, to rise or fall. Stock markets are volatile, with periods 
of rising prices and periods of falling prices.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_ForeignSecuritiesandCurrenciesRisk2_S000001025Summary75Member"
      id="ixv-82624">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Securities 
and Currencies Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Foreign securities prices 
may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or 
(b) less regulated or liquid securities markets. Investors holding these securities may also be exposed 
to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. 
dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, 
changing its value against the U.S. dollar). The Series does not hedge foreign currency risk.&lt;/span&gt;&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Foreign 
issuers may not be subject to uniform accounting, auditing and financial reporting standards and there 
may be less reliable and publicly available financial and other information about such issuers, as compared 
to U.S. issuers. A fund may have greater difficulty voting proxies, exercising shareholder rights, securing 
dividends and/or interest and obtaining information regarding corporate actions on a timely basis, pursuing 
legal remedies, and obtaining judgments with respect to foreign investments in foreign courts than with 
respect to domestic issuers in U.S. courts.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Depositary receipts are generally 
subject to the same risks as the foreign securities that they evidence or into which they may be converted. 
In addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered 
depositary receipts, are under no obligation to distribute shareholder communications to the holders 
of such receipts, or to pass through to them any voting rights with respect to the deposited securities. 
Depositary receipts that are not sponsored by the issuer may be less liquid and there may be less readily 
available public information about the issuer.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_GeographicFocusRisk2_S000001025Summary75Member"
      id="ixv-82631">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Geographic 
Focus Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;If a fund focuses its investments 
in securities of issuers located in a particular country or region, the fund may be subjected, to a greater 
extent than if its investments were less focused, to the risks of volatile economic cycles and/or conditions 
and developments that may be particular to that country or region, such as: adverse securities markets; 
adverse exchange rates; adverse social, political, regulatory, economic, business, environmental or other 
developments; or natural disasters.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_ValueInvestmentRisk2_S000001025Summary75Member"
      id="ixv-82636">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Value Investment 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Value stocks may perform differently from the market as a 
whole and an investment strategy purchasing these securities may cause a fund to at times underperform 
equity funds that use other investment strategies. Value stocks can react differently to political, economic, 
and industry developments than the market as a whole and other types of stocks. Value stocks also may 
underperform the market for long periods of time.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_ProfitabilityInvestmentRisk2_S000001025Summary75Member"
      id="ixv-82641">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Profitability 
Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; High relative profitability stocks may perform differently 
from the market as a whole and an investment strategy purchasing these securities may cause a fund to 
at times underperform equity funds that use other investment strategies.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_DerivativesRisk2_S000001025Summary75Member"
      id="ixv-82645">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, 
such as futures contracts, and options thereon, and foreign currency forward contracts, whose value is 
derived from that of other assets, rates or indices. The use of derivatives for non-hedging purposes 
may be considered to carry more risk than other types of investments. When a fund uses derivatives, the 
fund will be directly exposed to the risks of those derivatives. Derivative instruments are subject to 
a number of risks including counterparty, settlement, liquidity, interest rate, market, credit and management 
risks, as well as difficulties with respect to valuation. Changes in the value of a derivative may not 
correlate perfectly with the underlying asset, rate or index, and a fund could lose more than the principal 
amount invested. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_SecuritiesLendingRisk2_S000001025Summary75Member"
      id="ixv-82649">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
Securities lending involves the risk that the borrower may fail to return the securities in a timely 
manner or at all. As a result, a fund may lose money and there may be a delay in recovering the loaned 
securities. A fund could also lose money if it does not recover the securities and/or the value of the 
collateral falls, including the value of investments made with cash collateral. Securities lending also 
may have certain adverse tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_OperationalRisk2_S000001025Summary75Member"
      id="ixv-82653">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, 
system changes, faults in communication, and failures in systems, technology, or processes, and the use 
of artificial intelligence and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances 
are outside a fund&#x2019;s or its advisor&#x2019;s control, including instances at third parties. A fund and its 
advisor seek to reduce these operational risks through controls and procedures. However, measures that 
seek to reduce these operational risks through controls and procedures may not address every possible 
risk and may be inadequate to address these risks.&lt;/span&gt;&lt;/p&gt;

</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_CyberSecurityRisk2_S000001025Summary75Member"
      id="ixv-82662">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber Security Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A 
fund and its service providers&#x2019; use of internet, technology and information systems may expose the 
fund to potential risks linked to cyber security breaches of those technological or information systems. 
Cyber security breaches, amongst other things, could allow an unauthorized party to gain access to proprietary 
information, customer data, or fund assets, or cause the fund and/or its service providers to suffer 
data corruption or lose operational functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145712"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-82672">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The table also includes the performance of an additional index with a similar investment 
universe as the Portfolio. The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results. Updated performance information for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes. 
Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown in the 
table. In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145713">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145714"> The Portfolio&#x2019;s past performance (before and after taxes) is not an indication 
of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145715">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145716">The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145717">In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145718">DFA International 
Value Portfolio III&#x2005;Institutional Class Shares &#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      id="ixv-145719">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      id="ixv-145720">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145721"
      unitRef="pure">0.2217</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      id="ixv-145722">2020-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145723"
      unitRef="pure">-0.3194</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      id="ixv-145724">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145725">Annualized 
Returns (%) </oef:PerformanceTableHeading>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_C000002779Member_S000001025Member_S000001025Summary75Member"
      id="ixv-145726">Return 
Before Taxes</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145727"
      unitRef="pure">0.4526</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145728"
      unitRef="pure">0.1599</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145729"
      unitRef="pure">0.1045</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      id="ixv-145730">Return 
After Taxes on Distributions</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145731"
      unitRef="pure">0.4357</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145732"
      unitRef="pure">0.1484</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145733"
      unitRef="pure">0.0942</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      id="ixv-145734">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145735"
      unitRef="pure">0.2765</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145736"
      unitRef="pure">0.1262</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsAndSalesMember_C000002779Member_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145737"
      unitRef="pure">0.0828</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_MSCIWorldexUSAValueIndexnetdividends3256_S000001025Member_S000001025Summary75Member"
      id="ixv-145738">MSCI World ex USA Value Index (net 
dividends)</oef:AverageAnnualReturnLabel>
    <oef:IndexNoDeductionForFeesExpensesTaxes
      contextRef="Context_20251031_20251031_S000001025Member_S000001025Summary75Member"
      id="ixv-145739">(reflects 
no deduction for fees, expenses or taxes on sales)</oef:IndexNoDeductionForFeesExpensesTaxes>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_MSCIWorldexUSAValueIndexnetdividends3257_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145740"
      unitRef="pure">0.4223</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_MSCIWorldexUSAValueIndexnetdividends3257_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145741"
      unitRef="pure">0.1394</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_MSCIWorldexUSAValueIndexnetdividends3257_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145742"
      unitRef="pure">0.0916</oef:AvgAnnlRtrPct>
    <oef:AverageAnnualReturnLabel
      contextRef="Context_20251031_20251031_MSCIWorldexUSAIndexnetdividends3258_S000001025Member_S000001025Summary75Member"
      id="ixv-145743">MSCI World ex USA Index (net dividends)</oef:AverageAnnualReturnLabel>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20250101_20251231_MSCIWorldexUSAIndexnetdividends3259_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145744"
      unitRef="pure">0.3185</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20210101_20251231_MSCIWorldexUSAIndexnetdividends3259_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145745"
      unitRef="pure">0.0946</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="Context_20160101_20251231_MSCIWorldexUSAIndexnetdividends3259_S000001025Member_S000001025Summary75Member"
      decimals="INF"
      id="ixv-145746"
      unitRef="pure">0.0855</oef:AvgAnnlRtrPct>
    <oef:RiskReturnHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145747"> Emerging Markets Portfolio II</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145748"> 
Investment Objective</oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-85066">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
investment objective of the Emerging Markets Portfolio II (the &#x201c;Emerging Markets Portfolio&#x201d; or, the 
&#x201c;Portfolio&#x201d;) is long-term capital appreciation. The Emerging Markets Portfolio is a Feeder Portfolio 
and pursues its objective by investing substantially all of its assets in its corresponding Master Fund, 
The Emerging Markets Series (the &#x201c;Emerging Markets Series&#x201d; or &#x201c;Series&#x201d;) of The DFA Investment 
Trust Company (the &#x201c;Trust&#x201d;), which has the same investment objective and policies as the Portfolio.&lt;/p&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145749"> 
Fees and Expenses of the Portfolio</oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-85073">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:bold; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;This 
table describes the fees and expenses you may pay if you buy, hold or sell shares of the Portfolio. &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:bold; text-decoration:none;"&gt;You 
may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are 
not reflected in the table and Example below.&lt;/span&gt;&lt;/p&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:ShareholderFeesCaption
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145750">Shareholder 
Fees (fees paid directly from your investment)</oef:ShareholderFeesCaption>
    <oef:OperatingExpensesCaption
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145751">Annual 
Fund Operating Expenses (expenses that you pay each                     year 
as a percentage of the value of your investment)</oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="_956_"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="_957_"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="_958_"
      unitRef="pure">0.0045</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="_959_"
      unitRef="pure">-0.0010</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="_960_"
      unitRef="pure">0.0035</oef:NetExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145757">EXAMPLE</oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-85155">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;This 
Example is meant to help you compare the cost of investing in the Portfolio with the cost of investing 
in other funds. The Example reflects the aggregate annual operating expenses of the Portfolio and its 
portion of the expenses of the Series. The Example assumes that you invest $10,000 in the Portfolio for 
the time periods indicated. The Example also assumes that your investment has a 5% return each year and 
that the Portfolio&#x2019;s operating expenses remain the same. Although your actual costs may be higher or 
lower, based on these assumptions your costs whether you redeem or hold your shares would be: &lt;/p&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145758"
      unitRef="usd">36</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145759"
      unitRef="usd">36</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleYear03
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145760"
      unitRef="usd">113</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145761"
      unitRef="usd">113</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145762"
      unitRef="usd">197</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear05
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145763"
      unitRef="usd">197</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145764"
      unitRef="usd">197</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145765"
      unitRef="usd">443</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear10
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145766"
      unitRef="usd">443</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145767"
      unitRef="usd">443</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145768">PORTFOLIO TURNOVER</oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-85182">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;A fund generally pays 
transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). 
A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when 
fund shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating 
Expenses or in &lt;/p&gt;

&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;the Example, affect the Portfolio&#x2019;s performance. During 
the most recent fiscal year, the Series' portfolio turnover rate was &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; color:#000000; font-weight:normal; text-decoration:none;"&gt;10%&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
of the average value of its investment portfolio. &lt;/span&gt;&lt;/p&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145769"
      unitRef="pure">0.10</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145770"> Principal 
Investment Strategies</oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-85197">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Emerging Markets Portfolio invests 
substantially all of its assets in the Emerging Markets Series. To achieve the Portfolio&#x2019;s and the 
Series&#x2019; investment objectives, Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) implements an integrated 
investment approach that combines research, portfolio design, portfolio management, and trading functions. 
As further described below, the Series&#x2019; design emphasizes long-term drivers of expected returns identified 
by the Advisor&#x2019;s research, while balancing risk through broad diversification across companies, sectors, 
and countries. The Advisor&#x2019;s portfolio management and trading processes further balance those long-term 
drivers of expected returns with shorter-term drivers of expected returns and trading costs.&lt;/p&gt;&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Emerging Markets Series is designed to purchase a broad market coverage of larger companies associated 
with emerging markets, which may include frontier markets (emerging market countries in an earlier stage 
of development) authorized for investment by the Advisor&#x2019;s Investment Committee (&#x201c;Approved Markets&#x201d;). 
The Advisor&#x2019;s definition of large varies across countries and is based primarily on market capitalization. 
A company&#x2019;s market capitalization is the number of its shares outstanding times its price per share. 
In each country authorized for investment, the Advisor first ranks eligible companies listed on selected 
exchanges based on the companies&#x2019; market capitalizations. The Advisor then defines the minimum market 
capitalization for a large company in that country. For example, based on market capitalization data 
as of December 31, 2025, Mexico had a size threshold of $5,937 million or above, and the Czech Republic 
had a size threshold of $10,743 million or above. These thresholds will change due to market conditions. 
In addition, the Advisor may consider a company&#x2019;s size, relative price, and/or profitability relative 
to other eligible companies when making investment decisions for the Emerging Markets Series. An equity 
issuer is considered to have a low relative price (i.e., a value stock) primarily because it has a low 
price in relation to its book value. In assessing relative price, the Advisor may consider additional 
factors such as price to cash flow or price to earnings ratios. An equity issuer is considered to have 
high profitability because it has high earnings or profits from operations in relation to its book value 
or assets. The criteria the Advisor uses for assessing relative price and profitability are subject to 
change from time to time.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;As a non-fundamental policy, under normal circumstances, the 
Emerging Markets Series will invest at least 80% of its net assets in emerging markets investments that 
are defined in the prospectus as Approved Market securities.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Advisor may also increase 
or reduce the Emerging Markets Series&#x2019; exposure to an eligible company, or exclude a company, based 
on shorter-term considerations, such as a company&#x2019;s price momentum and short-run reversals. In addition, 
the Advisor seeks to reduce trading costs using a flexible trading approach that looks for opportunities 
to participate in the available market liquidity, while managing turnover and explicit transaction costs.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
Emerging Markets Series may gain exposure to companies associated with Approved Markets by purchasing 
equity securities in the form of depositary receipts, which may be listed or traded outside the issuer&#x2019;s 
domicile country. The Emerging Markets Series may also invest in China A-shares (equity securities of 
companies listed in China) and variable interest entities (special structures that utilize contractual 
arrangements to provide exposure to certain Chinese companies). The Emerging Markets Series and the Emerging 
Markets Portfolio each may purchase or sell futures contracts and options on futures contracts for Approved 
Market or other equity market securities and indices, including those of the United States, to increase 
or decrease equity market exposure based on actual or expected cash inflows to or outflows from the Series 
or Portfolio. Because many of the Emerging Markets Series&#x2019; investments may be denominated in foreign 
currencies, the Series and the Portfolio may enter into foreign currency exchange transactions, including 
foreign currency forward contracts, in connection with the settlement of foreign securities or to transfer 
cash balances from one currency to another currency.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The Emerging Markets Series 
may lend its portfolio securities to generate additional income.&lt;/p&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_PrincipalRisks2_S000001020Summary76Member"
      id="ixv-85204">&lt;p style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; text-align:left; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:4.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;a href="" id="x5x8"&gt;&lt;/a&gt;&lt;span style="font-size:12.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Principal 
Risks&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money. An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Insurance Corporation or any other government agency. The following is a description 
of principal risks of investing in the Portfolio and the Series.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_RiskLoseMoneyMember_S000001020Summary76Member"
      id="ixv-145771">Because the value of your investment in the Portfolio will fluctuate, there is 
the risk that you will lose money.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_RiskNotInsuredMember_S000001020Summary76Member"
      id="ixv-145772">An investment in the Portfolio is not a deposit of a bank and is not 
insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_EquityMarketRisk2_S000001020Summary76Member"
      id="ixv-85215">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Equity Market Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Even a long-term investment 
approach cannot guarantee a profit. Economic, market, environmental, political, and issuer-specific conditions 
and events will cause the value of equity securities, and a fund that owns them, to rise or fall. Stock 
markets are volatile, with periods of rising prices and periods of falling prices.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_ForeignSecuritiesandCurrenciesRisk2_S000001020Summary76Member"
      id="ixv-85220">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Foreign Securities and Currencies Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Foreign securities prices 
may decline or fluctuate because of: (a) economic or political actions of foreign governments, and/or 
(b) less regulated or liquid securities markets. Investors holding these securities may also be exposed 
to foreign currency risk (the possibility that foreign currency will fluctuate in value against the U.S. 
dollar or that a foreign government will convert, or be forced to convert, its currency to another currency, 
changing its value against the U.S. dollar). The Series does not hedge foreign currency risk.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Foreign 
issuers may not be subject to uniform accounting, auditing and financial reporting standards and there 
may be less reliable and publicly available financial and other information about such issuers, as compared 
to U.S. issuers. A fund may have greater difficulty voting proxies, exercising shareholder rights, securing 
dividends and/or interest and obtaining information regarding corporate actions on a timely basis, pursuing 
legal remedies, and obtaining judgments with respect to foreign investments in foreign courts than with 
respect to domestic issuers in U.S. courts.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Depositary receipts are generally 
subject to the same risks as the foreign securities that they evidence or into which they may be converted. 
In addition, the underlying issuers of certain depositary receipts, particularly unsponsored or unregistered 
depositary receipts, are under no obligation to distribute shareholder communications to the holders 
of such receipts, or to pass through to them any voting rights with respect to the deposited securities. 
Depositary receipts that are not sponsored by the issuer may be less liquid and there may be less readily 
available public information about the issuer.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_GeographicFocusRisk2_S000001020Summary76Member"
      id="ixv-85227">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Geographic 
Focus Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;If a fund focuses its investments 
in securities of issuers located in a particular country or region, the fund may be subjected, to a greater 
extent than if its investments were less focused, to the risks of volatile economic cycles and/or conditions 
and developments that may be particular to that country or region, such as: adverse securities markets; 
adverse exchange rates; adverse social, political, regulatory, economic, business, environmental or other 
developments; or natural disasters.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_EmergingMarketsRisk2_S000001020Summary76Member"
      id="ixv-85232">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Emerging Markets 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Securities of issuers associated with emerging market countries 
may be subject to higher and additional risks than securities of issuers in developed foreign markets.&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:normal; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Numerous emerging market countries have a history of, and continue to experience 
serious, and potentially continuing, economic and political problems. Stock markets in many emerging 
market countries are relatively small, expensive to trade in and generally have higher risks than those 
in developed markets. Securities in emerging markets also may be less liquid than those in developed 
markets and foreigners are often limited in their ability to invest in, and withdraw assets from, these 
markets. Additional restrictions may be imposed under other conditions. Frontier market countries generally 
have smaller economies or less developed capital markets and, as a result, the risks of investing in 
emerging market countries are magnified in frontier market countries.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_ChinaInvestmentsRisk2_S000001020Summary76Member"
      id="ixv-85239">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;China Investments Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;There are special risks 
associated with investments in China, Hong Kong, and Taiwan. China, Hong Kong, and Taiwan are highly 
interconnected and interdependent, with relationships built on trade, finance, culture, and politics. 
Despite prior economic and trade reforms and the prior expansion of private ownership of companies in 
certain sectors, the Chinese government still exercises substantial influence over many aspects of the 
private sector and may own or control many companies, including by embedding Chinese Communist Party 
or People&#x2019;s Armed Forces Department personnel in Chinese companies. In addition, the Chinese government 
continues to maintain a major role in economic policy making and may alter or discontinue economic or 
trade reforms at any time. Investing in China involves risks of losses due to expropriation, nationalization, 
confiscation of assets and property, and the imposition of restrictions on foreign investments and on 
repatriation of capital invested.&lt;/span&gt;&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;Investments in China, Hong 
Kong, and Taiwan are also subject to the risk of escalating tensions and deteriorating relations with 
the U.S. as economic and strategic competition between the U.S. and China intensifies, which could result 
in further tariffs, trade restrictions, sanctions, or other actions that adversely impact the value of 
such &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;investments. A reduction in spending on Chinese products and services, supply 
chain diversification or the institution of additional tariffs or other trade barriers, including as 
a result of heightened trade tensions between China and the United States may also have an adverse impact 
on the Chinese economy. In addition, investments in Taiwan could be adversely affected by its political 
and economic relationship with China. Certain securities issued by companies located or operating in 
China, such as China A-shares, are also subject to trading restrictions, quota limitations and less market 
liquidity, which could pose risks to a fund investing in such securities. In addition, investments in 
special structures that utilize contractual arrangements to provide exposure to certain Chinese companies, 
known as variable interest entities (&#x201c;VIEs&#x201d;), that operate in sectors in which China restricts and/or 
prohibits foreign investments may present additional risks. The Chinese government&#x2019;s acceptance of 
the VIE structure is evolving. It is uncertain whether Chinese officials and regulators will withdraw 
their acceptance of the structure generally, or with respect to certain industries, or whether Chinese 
courts or arbitration bodies would decline to enforce the contractual rights of foreign investors, each 
of which would likely have significant, detrimental, and possibly permanent losses on the value of such 
investments.&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_ProfitabilityInvestmentRisk2_S000001020Summary76Member"
      id="ixv-85250">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Profitability Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; High 
relative profitability stocks may perform differently from the market as a whole and an investment strategy 
purchasing these securities may cause a fund to at times underperform equity funds that use other investment 
strategies.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_ValueInvestmentRisk2_S000001020Summary76Member"
      id="ixv-85254">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Value Investment Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Value stocks may perform differently from the market as a whole and an investment 
strategy purchasing these securities may cause a fund to at times underperform equity funds that use 
other investment strategies. Value stocks can react differently to political, economic, and industry 
developments than the market as a whole and other types of stocks. Value stocks also may underperform 
the market for long periods of time.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_DerivativesRisk2_S000001020Summary76Member"
      id="ixv-85259">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Derivatives 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Derivatives are instruments, such as futures contracts, and options thereon, 
and foreign currency forward contracts, whose value is derived from that of other assets, rates or indices. 
The use of derivatives for non-hedging purposes may be considered to carry more risk than other types 
of investments. When a fund uses derivatives, the fund will be directly exposed to the risks of those 
derivatives. Derivative instruments are subject to a number of risks including counterparty, settlement, 
liquidity, interest rate, market, credit and management risks, as well as difficulties with respect to 
valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, 
rate or index, and a fund could lose more than the principal amount invested. &lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_SecuritiesLendingRisk2_S000001020Summary76Member"
      id="ixv-85263">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Securities Lending Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt; Securities lending involves 
the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, 
a fund may lose money and there may be a delay in recovering the loaned securities. A fund could also 
lose money if it does not recover the securities and/or the value of the collateral falls, including 
the value of investments made with cash collateral. Securities lending also may have certain adverse 
tax consequences.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_OperationalRisk2_S000001020Summary76Member"
      id="ixv-85267">&lt;p style="-sec-ix-redline:true;font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Operational Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; 
&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;Operational risks include human error, changes in personnel, system changes, faults 
in communication, and failures in systems, technology, or processes, and the use of artificial intelligence 
and machine learning (&#x201c;AI&#x201d;). Various operational events or circumstances are outside a fund&#x2019;s or 
its advisor&#x2019;s control, including instances at third parties. A fund and its advisor seek to reduce 
these operational risks through controls and procedures. However, measures that seek to reduce these 
operational risks through controls and procedures may not address every possible risk and may be inadequate 
to address these risks.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_CyberSecurityRisk2_S000001020Summary76Member"
      id="ixv-85272">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; font-style:normal;"&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:italic; color:#000000; font-weight:bold; text-decoration:none;"&gt;Cyber Security 
Risk:&lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir-HeavyOblique; font-style:italic; font-weight:normal; text-decoration:none;"&gt; &lt;/span&gt;&lt;span style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; font-style:normal; font-weight:normal; text-decoration:none;"&gt;A fund and its service providers&#x2019; use of internet, technology 
and information systems may expose the fund to potential risks linked to cyber security breaches of those 
technological or information systems. Cyber security breaches, amongst other things, could allow an unauthorized 
party to gain access to proprietary information, customer data, or fund assets, or cause the fund and/or 
its service providers to suffer data corruption or lose operational functionality.&lt;/span&gt;&lt;/p&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145774"> Performance</oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-85282">&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year. The table illustrates how annualized 
returns for certain periods, both before and after taxes, compare with those of a broad measure of market 
performance. The Portfolio&#x2019;s past performance (before and &lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;after taxes) is not an indication of future results. Updated performance information 
for the Portfolio can be obtained by visiting https://www.dimensional.com/us-en/funds.&lt;/p&gt;&lt;p style="font-size:9.0pt; font-family:Avenir LT Pro 45 Book; text-align:justify; font-weight:normal; text-decoration:none;"&gt;The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes. 
Actual after-tax returns depend on an investor&#x2019;s tax situation and may differ from those shown in the 
table. In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.&lt;/p&gt;</oef:PerformanceNarrativeTextBlock>
    <oef:PerformanceInformationIllustratesVariabilityOfReturns
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145775">The 
bar chart and table immediately following illustrate the variability of the Portfolio&#x2019;s returns and 
are meant to provide some indication of the risks of investing in the Portfolio. The bar chart shows 
the changes in the Portfolio&#x2019;s performance from year to year.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145776"> The Portfolio&#x2019;s past performance (before and after taxes) is not an indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145778">https://www.dimensional.com/us-en/funds</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145779">The 
after-tax returns presented in the table for the Portfolio are calculated using the historical highest 
individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145780">In addition, the after-tax returns shown are not relevant to investors who hold shares of the 
Portfolio through tax-advantaged arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:BarChartHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145781">Emerging 
Markets Portfolio II&#x2005;Institutional Class Shares &#x2014;Total Returns</oef:BarChartHeading>
    <oef:HighestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      id="ixv-145782">Highest Quarter</oef:HighestQuarterlyReturnLabel>
    <oef:LowestQuarterlyReturnLabel
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      id="ixv-145783">Lowest Quarter</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145784"
      unitRef="pure">0.2032</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      id="ixv-145785">2020-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      decimals="INF"
      id="ixv-145786"
      unitRef="pure">-0.2711</oef:BarChartLowestQuarterlyReturn>
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      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
      id="ixv-145787">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="Context_20251031_20251031_S000001020Member_S000001020Summary76Member"
      id="ixv-145788">Annualized Returns (%) </oef:PerformanceTableHeading>
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      contextRef="Context_20251031_20251031_C000002774Member_S000001020Member_S000001020Summary76Member"
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Before Taxes</oef:AverageAnnualReturnLabel>
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      contextRef="Context_20250101_20251231_C000002774Member_S000001020Member_S000001020Summary76Member"
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      id="ixv-145790"
      unitRef="pure">0.3359</oef:AvgAnnlRtrPct>
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      contextRef="Context_20210101_20251231_C000002774Member_S000001020Member_S000001020Summary76Member"
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      id="ixv-145791"
      unitRef="pure">0.0660</oef:AvgAnnlRtrPct>
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      contextRef="Context_20160101_20251231_C000002774Member_S000001020Member_S000001020Summary76Member"
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      id="ixv-145792"
      unitRef="pure">0.0925</oef:AvgAnnlRtrPct>
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      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsMember_C000002774Member_S000001020Member_S000001020Summary76Member"
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After Taxes on Distributions</oef:AverageAnnualReturnLabel>
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      contextRef="Context_20250101_20251231_AfterTaxesOnDistributionsMember_C000002774Member_S000001020Member_S000001020Summary76Member"
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      id="ixv-145794"
      unitRef="pure">0.3108</oef:AvgAnnlRtrPct>
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      contextRef="Context_20210101_20251231_AfterTaxesOnDistributionsMember_C000002774Member_S000001020Member_S000001020Summary76Member"
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      id="ixv-145795"
      unitRef="pure">0.0446</oef:AvgAnnlRtrPct>
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      contextRef="Context_20160101_20251231_AfterTaxesOnDistributionsMember_C000002774Member_S000001020Member_S000001020Summary76Member"
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      id="ixv-145796"
      unitRef="pure">0.0721</oef:AvgAnnlRtrPct>
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      contextRef="Context_20251031_20251031_AfterTaxesOnDistributionsAndSalesMember_C000002774Member_S000001020Member_S000001020Summary76Member"
      id="ixv-145797">Return 
After Taxes on Distributions and Sale of Portfolio Shares</oef:AverageAnnualReturnLabel>
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      unitRef="pure">0.2154</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0468</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0701</oef:AvgAnnlRtrPct>
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no deduction for fees, expenses or taxes on sales)</oef:IndexNoDeductionForFeesExpensesTaxes>
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      unitRef="pure">0.0420</oef:AvgAnnlRtrPct>
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      id="ixv-145805"
      unitRef="pure">0.0842</oef:AvgAnnlRtrPct>
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    <dei:DocumentEffectiveDate contextRef="Context_20251031_20251031" id="ixv-145813">2026-02-27</dei:DocumentEffectiveDate>
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Fund Advisors LP (the &#x201c;Advisor&#x201d;) has agreed to waive certain fees of the Portfolio. The Fee 
Waiver Agreement for the Portfolio will remain in effect through February 28, 2027, and may only be terminated 
by the Fund&#x2019;s Board of Directors prior to that date. Under certain circumstances, the Advisor retains 
the right to seek reimbursement for any fees previously waived up to thirty-six months after such fee 
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2025 S&amp;P Dow Jones Indices LLC, a division of S&amp;P Global.  All rights reserved.</xhtml:span></xhtml:p></link:footnote>
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ETF Class shares of the Portfolio are new, so the &#x201c;Other Expenses" shown for the class are based 
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assume certain expenses of the ETF Class shares of the Portfolio. The Fee Waiver and/or Expense Assumption 
Agreement for the Portfolio will remain in effect through February 28, 2027, and may only be terminated 
by the Fund&#x2019;s Board of Directors prior to that date. Under certain circumstances, the Advisor retains 
the right to seek reimbursement for any fees previously waived and/or expenses previously assumed up 
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shares of the Portfolio had not yet incepted. Performance shown prior to the inception date of the ETF 
Class shares is from the Portfolio's Institutional Class shares, a mutual fund class of shares of the 
Portfolio not offered in this Prospectus. Returns for the ETF Class shares and Institutional Class shares 
may vary due to differences in their expenses.</xhtml:p></link:footnote>
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2025 S&amp;P Dow Jones Indices LLC, a division of S&amp;P Global.  All rights reserved.</xhtml:span></xhtml:p></link:footnote>
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&#x201c;Management Fee&#x201d; includes an investment management fee payable by the Feeder Portfolio and 
an investment management fee payable by the Master Fund. For any period when the Feeder Portfolio is 
invested in other funds managed by Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) (collectively, 
&#x201c;Underlying Funds&#x201d;), the Advisor has contractually agreed to permanently waive the Feeder 
Portfolio&#x2019;s direct investment management fee to the extent necessary to offset the proportionate 
share of any Underlying Fund&#x2019;s investment management fee paid by the Feeder Portfolio through its 
investment in such Underlying Fund. The amounts set forth under &#x201c;Other Expenses&#x201d; and &#x201c;Total 
Annual Fund Operating Expenses&#x201d; reflect the direct expenses of the Feeder Portfolio and the indirect 
expenses of the Feeder Portfolio&#x2019;s portion of the expenses of the Master Fund.</xhtml:p></link:footnote>
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Fund Advisors LP (the &#x201c;Advisor&#x201d;) has agreed to waive certain fees and in certain instances, 
assume certain expenses of the Portfolio. The Fee Waiver and/or Expense Assumption Agreement for the 
Portfolio will remain in effect through February 28, 2027, and may only be terminated by the Fund&#x2019;s 
Board of Directors prior to that date. Under certain circumstances, the Advisor retains the right to 
seek reimbursement for any fees previously waived and/or expenses previously assumed up to thirty-six 
months after such fee waiver and/or expense assumption.</xhtml:p></link:footnote>
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Data Indices, LLC. Prior to July 1, 2022, index returns reflect no deduction for transaction costs. Effective 
July 1, 2022, index returns include transaction costs (as determined and calculated by the index provider), 
which may be higher or lower than the actual transaction costs incurred by the Portfolio.</xhtml:p></link:footnote>
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Fund Advisors LP (the &#x201c;Advisor&#x201d;) has agreed to waive certain fees and in certain instances, 
assume certain expenses of the Portfolio. The Fee Waiver and/or Expense Assumption Agreement for the 
Portfolio will remain in effect through February 28, 2027, and may only be terminated by the Fund&#x2019;s 
Board of Directors prior to that date. Under certain circumstances, the Advisor retains the right to 
seek reimbursement for any fees previously waived and/or expenses previously assumed up to thirty-six 
months after such fee waiver and/or expense assumption.</xhtml:p></link:footnote>
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Data Indices, LLC. Prior to July 1, 2022, index returns reflect no deduction for transaction costs. Effective 
July 1, 2022, index returns include transaction costs (as determined and calculated by the index provider), 
which may be higher or lower than the actual transaction costs incurred by the Portfolio.</xhtml:p></link:footnote>
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Fund Advisors LP (the &#x201c;Advisor&#x201d;) has agreed to waive certain fees of the Portfolio. The Fee Waiver 
Agreement for the Portfolio will remain in effect through February 28, 2027, and may only be terminated 
by the Fund&#x2019;s Board of Directors prior to that date. Under certain circumstances, the Advisor retains 
the right to seek reimbursement for any fees previously waived up to thirty-six months after such fee 
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Fund Advisors LP (the &#x201c;Advisor&#x201d;) has agreed to waive certain fees of the Portfolio. The Fee Waiver 
Agreement for the Portfolio will remain in effect through February 28, 2027, and may only be terminated 
by the Fund&#x2019;s Board of Directors prior to that date. Under certain circumstances, the Advisor retains 
the right to seek reimbursement for any fees previously waived up to thirty-six months after such fee 
waiver.</xhtml:p></link:footnote>
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BofA index data copyright 2025 ICE Data Indices, LLC. Prior to July 1, 2022, index returns reflect no 
deduction for transaction costs. Effective July 1, 2022, index returns include transaction costs (as 
determined and calculated by the index provider), which may be higher or lower than the actual transaction 
costs incurred by the Portfolio.</xhtml:p></link:footnote>
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Fund Advisors LP (the &#x201c;Advisor&#x201d;) has agreed to waive certain fees of the Portfolio. The Fee Waiver 
Agreement for the Portfolio will remain in effect through February 28, 2027, and may only be terminated 
by the Fund&#x2019;s Board of Directors prior to that date. Under certain circumstances, the Advisor retains 
the right to seek reimbursement for any fees previously waived up to thirty-six months after such fee 
waiver.</xhtml:p></link:footnote>
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unmanaged hypothetical index composed of 25% S&amp;P Global BMI Index (net dividends) and 75% ICE BofA 
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BofA index data copyright 2025 ICE Data Indices, LLC. Prior to July 1, 2022, index returns reflect no 
deduction for transaction costs. Effective July 1, 2022, index returns include transaction costs (as 
determined and calculated by the index provider), which may be higher or lower than the actual transaction 
costs incurred by the Portfolio.</xhtml:p></link:footnote>
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&#x201c;Management Fee&#x201d; includes an investment management fee payable by the Feeder Portfolio and an investment 
management fee payable by the Master Fund. For any period when the Feeder Portfolio is invested in other 
funds managed by Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) (collectively, &#x201c;Underlying Funds&#x201d;), 
the Advisor has contractually agreed to permanently waive the Feeder Portfolio&#x2019;s direct investment 
management fee to the extent necessary to offset the proportionate share of any Underlying Fund&#x2019;s investment 
management fee paid by the Feeder Portfolio through its investment in such Underlying Fund. The amounts 
set forth under &#x201c;Other Expenses&#x201d; and &#x201c;Total Annual Fund Operating Expenses&#x201d; reflect the direct 
expenses of the Feeder Portfolio and the indirect expenses of the Feeder Portfolio&#x2019;s portion of the 
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&#x201c;Management Fee&#x201d; includes an investment management fee payable by the Feeder Portfolio and an investment 
management fee payable by the Master Fund. For any period when the Feeder Portfolio is invested in other 
funds managed by Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) (collectively, &#x201c;Underlying Funds&#x201d;), 
the Advisor has contractually agreed to permanently waive the Feeder Portfolio&#x2019;s direct investment 
management fee to the extent necessary to offset the proportionate share of any Underlying Fund&#x2019;s investment 
management fee paid by the Feeder Portfolio through its investment in such Underlying Fund. The amounts 
set forth under &#x201c;Other Expenses&#x201d; and &#x201c;Total Annual Fund Operating Expenses&#x201d; reflect the direct 
expenses of the Feeder Portfolio and the indirect expenses of the Feeder Portfolio&#x2019;s portion of the 
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funds managed by Dimensional Fund Advisors LP (the &#x201c;Advisor&#x201d;) (collectively, &#x201c;Underlying Funds&#x201d;), 
the Advisor has contractually agreed to permanently waive the Feeder Portfolio&#x2019;s direct investment 
management fee to the extent necessary to offset the proportionate share of any Underlying Fund&#x2019;s investment 
management fee paid by the Feeder Portfolio through its investment in such Underlying Fund. The amounts 
set forth under &#x201c;Other Expenses&#x201d; and &#x201c;Total Annual Fund Operating Expenses&#x201d; reflect the direct 
expenses of the Feeder Portfolio and the indirect expenses of the Feeder Portfolio&#x2019;s portion of the 
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