Risk/Return:

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Investment Objective

Expense Heading [Optional Text]

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Fees and Expenses of the Portfolio

Shareholder Fees Caption [Optional Text]

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Shareholder Fees (fees paid directly from your investment)

Portfolio Turnover [Heading]

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PORTFOLIO TURNOVER

Portfolio Turnover, Rate

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137.00%

Expense Example Narrative [Text Block]

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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’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:

Strategy Narrative [Text Block]

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The California Municipal Real Return Portfolio seeks to achieve its investment objective by investing primarily in a universe of municipal securities, including inflation-protected municipal securities, issued by or on behalf of California state or local governments and their agencies, instrumentalities, and regional governmental authorities, and in derivative instruments to provide inflation protection. The Portfolio may also invest a portion of its assets in municipal securities issued by U.S. territories that are exempt from state taxation under federal law. Municipal securities in which the Portfolio may invest include, among others, revenue bonds, general obligation bonds, industrial development bonds, municipal lease obligations, commercial paper, variable rate demand obligations and other instruments (including participation interests in such securities). The interest on the municipal securities purchased by the Portfolio, in the opinion of bond counsel for the issuers and under current tax law, is exempt from

federal income tax (i.e., excludable from gross income for individuals for federal income tax purposes) and California state personal income tax. As a fundamental investment policy, under normal market conditions, the Portfolio will invest at least 80% of its net assets in municipal securities that pay interest exempt from federal income tax and California state personal income tax. The Portfolio does not currently intend to invest its assets in municipal securities whose interest is subject to the federal alternative minimum tax.

Under normal circumstances, the California Municipal Real Return Portfolio will maintain a weighted average duration of no greater than five years. If a security has been or is expected to be redeemed by the issuer at a date prior to the stated final maturity date for the purposes of the above duration restriction, the early redemption date shall be considered the maturity date regardless of the stated final maturity. If a security's coupon or interest rate is periodically reset, the reset date will be considered for the purposes of the above duration restriction. Duration is a measure of the sensitivity of a security’s price to changes in interest rates. The longer a security’s duration, the more sensitive it will be to changes in interest rates.

Municipal securities are often issued to obtain funds for various public purposes, including the construction of a wide range of public facilities, such as bridges, highways, housing, hospitals, mass transportation facilities, schools, streets and public utilities, such as water and sewer works. Municipal securities include municipal leases, certificates of participation, municipal obligation components and municipal custody receipts. The California Municipal Real Return Portfolio may invest more than 25% of its assets in municipal securities issued to finance projects in a particular segment of the bond market including, but not limited to, health care, housing, education, utilities, and transportation. The Portfolio also may invest more than 25% of its assets in industrial development bonds.

The California Municipal Real Return Portfolio intends to maintain a dollar-weighted average credit quality equal to or better than the lower of: (i) a credit quality rating of AA by S&P Global Ratings (“S&P”) or Fitch Ratings Ltd. (“Fitch”) or Aa2 by Moody’s Ratings (“Moody’s”) or (ii) the credit quality of general obligation bonds issued by the State of California. For purposes of the above policy on dollar-weighted average credit quality, unrated securities may be included if such securities have been determined by the Dimensional Fund Advisors LP (the “Advisor”) to be of comparable quality.

The California Municipal Real Return Portfolio may (1) purchase certain municipal securities that are insured, (2) invest in municipal securities secured by mortgages on single-family homes and multi-family projects, (3) invest in pre-refunded municipal securities, (4) purchase tax-exempt municipal securities on a “when-issued” basis and (5) use derivatives, such as fixed income related futures and options contracts, credit default swaps and interest rate swaps, to hedge against changes in interest rates. The Portfolio may also invest in exchange-traded funds (ETFs) to gain exposure to the municipal bond market pending investment in municipal bonds. The Portfolio may also invest in money market funds.

The California Municipal Real Return Portfolio may enter into swaps, such as inflation swaps, to seek inflation protection. The Portfolio also may enter into credit default swaps on issuers or indices to buy or sell credit protection to hedge its credit exposure; gain market or issuer exposure without owning the underlying securities; or increase the Portfolio’s total return. The Portfolio also 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.

Although the California Municipal Real Return Portfolio attempts to invest all of its assets in tax-exempt securities (federal and State of California), it is possible, although not anticipated, that a portion of its assets may be invested in securities that pay taxable interest, including interest that may be subject to the federal alternative minimum tax. These investments could generate taxable income for shareholders.

The California Municipal Real Return Portfolio is primarily designed for investment by California taxpayers.

Performance Narrative [Text Block]

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The bar chart and table immediately following illustrate the variability of the Portfolio’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’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’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.

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’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.

Performance Availability Website Address [Text]

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https://www.dimensional.com/us-en/funds

Bar Chart [Heading]

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DFA California Municipal Real Return Portfolio Institutional Class Shares —Total Returns

Index No Deduction for Fees, Expenses, or Taxes [Text]

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(reflects no deduction for fees, expenses or taxes on sales)

Performance Table Not Relevant to Tax Deferred

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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.

Risk/Return:

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Risk [Text Block]

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Because the value of your investment in the Portfolio will fluctuate, there is the risk that you will lose money.

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Risk [Text Block]

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Market Risk: 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.

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Risk [Text Block]

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Inflation-Protected Securities Interest Rate Risk: Inflation-protected securities may react differently from other fixed income securities to changes in interest rates. Because interest rates on inflation-protected securities are adjusted for inflation, the values of these securities are not materially affected by inflation expectations. Therefore, the value of inflation-protected securities are anticipated to change in response to changes in “real” interest rates, which represent nominal (stated) interest rates reduced by the expected impact of inflation. Generally, the value of an inflation-protected security will fall when real interest rates rise and will rise when real interest rates fall.

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Risk [Text Block]

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Inflation-Protected Securities Tax Risk: Any increase in the principal amount of an inflation-protected security may be included for tax purposes in a fund’s gross income, even though no cash attributable to such gross income has been received by a fund. In such event, a fund may be required to make annual gross distributions to shareholders that exceed the cash it has otherwise received. In order to pay such distributions, a fund may be required to raise cash by selling its investments. The sale of such investments could result in capital gains to a fund and additional capital gain distributions to shareholders. In addition, adjustments during the taxable year for deflation to an inflation-indexed bond held by a fund may cause amounts previously distributed to shareholders in the taxable year as income to be characterized as a return of capital.

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Risk [Text Block]

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Income Risk: Income risk is the risk that falling interest rates will cause a fund’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.

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Risk [Text Block]

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Tax Liability Risk: Tax liability risk is the risk that distributions by a fund become taxable to shareholders due to noncompliant conduct by a municipal bond issuer, unfavorable changes in federal or state tax laws, or adverse interpretations of tax laws by the Internal Revenue Service or state tax authorities or other factors. Such adverse interpretations or actions could cause interest from a security to become taxable, possibly retroactively, subjecting shareholders to increased tax liability. In addition, such adverse interpretations or actions could cause the value of a security, and therefore, the value of a fund’s shares, to decline.

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Risk [Text Block]

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Municipal Project-Specific Risk: A fund may be more sensitive to adverse economic, business or political developments if it invests a substantial portion of its assets in municipal securities that finance similar types of projects in a segment of the municipal bond market (such as education, health care, housing, education, utilities or transportation) or industrial development bonds. A change that affects one project in a particular segment of the market, such as proposed legislation on the financing of the project, a shortage of the materials needed for the project, or a declining need for the project, would likely affect all similar projects, thereby increasing market risk.

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Risk [Text Block]

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Variable Rate Demand Obligations Risk: Certain variable rate demand obligations (“VRDOs”) may not have an active secondary market. These VRDOs could be difficult to dispose of if the remarketing agent defaults on its payment obligation and/or if the fund is not entitled to exercise its demand rights, which could cause a loss with respect to such VRDOs.

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Risk [Text Block]

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High Portfolio Turnover Risk: When high portfolio turnover (more than 100%) is caused by the sale of a fund’s portfolio securities and the reinvestment by the fund in other portfolio securities, such high portfolio turnover may result in increased transaction costs, including brokerage commissions, dealer mark-ups and other transaction costs. Additionally, the sale of a fund’s portfolio securities may result in the distribution of higher capital gains as compared to a fund with less active trading policies. Alternatively, for fixed income funds, a higher portfolio turnover may be in part the result of bonds being held to their maturity, which may have a minimal impact on transaction costs and taxes.

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Risk [Text Block]

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Operational Risk: 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 (“AI”). Various operational events or circumstances are outside a fund’s or its advisor’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.

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