Objective, Primary [Text Block]

rr_RiskReturnAbstract

Risk/Return [Heading]

rr_RiskReturnHeading

Dimensional 2035 Target Date Retirement Income Fund

Objective [Heading]

rr_ObjectiveHeading

Investment Objective

rr_ObjectivePrimaryTextBlock

The investment objective of the Dimensional 2035 Target Date Retirement Income Fund (the “2035 Target Date Portfolio” or the “Portfolio”) is to provide total return consistent with the Portfolio’s current asset allocation. Total return is composed of income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Portfolio

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

This table describes the fees and expenses you may pay if you buy, hold or sell shares of the 2035 Target Date Portfolio. 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.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment):

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination

February 28, 2023

Portfolio Turnover [Heading]

rr_PortfolioTurnoverHeading

PORTFOLIO TURNOVER

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

A mutual fund generally pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when 2035 Target Date Portfolio shares are held in a taxable account. The Portfolio does not pay transaction costs when buying and selling shares of other mutual funds managed by the Advisor (the “Underlying Funds”); however, the Underlying Funds pay transaction costs when buying and selling securities for their portfolio. The transaction costs incurred by the Underlying Funds, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Portfolio’s performance. During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 25% based on the weighted average portfolio turnover ratios of each of the Portfolio’s underlying investments.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

25.00%

Expense Example [Heading]

rr_ExpenseExampleHeading

EXAMPLE

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is meant to help you compare the cost of investing in the 2035 Target Date Portfolio with the cost of investing in other mutual 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. 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 would be:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

To achieve its investment objective, the 2035 Target Date Portfolio allocates its assets to other mutual funds managed by Dimensional Fund Advisors LP (the “Advisor”) (i.e., the Underlying Funds) according to an asset allocation strategy designed for investors planning to retire in or within a few years of 2035 (the target date) and are planning to withdraw the value of the investment in the Portfolio over many years after the target date. Over time, the Portfolio’s allocation to the Underlying Funds is expected to change based on an asset allocation strategy that generally becomes more conservative (reducing its allocation to equity Underlying Funds and increasing its allocation to fixed income Underlying Funds) until reaching the “landing point,” which is 15 years after the target date (i.e., 2050 in the case of the Portfolio), at which time the Portfolio reaches its final static asset allocation. At the final landing point, the Portfolio is expected to reach a final static asset allocation of 15% to 25% of its assets allocated to domestic and international equity Underlying Funds and 75% to 85% of its assets allocated to fixed income Underlying Funds. The asset allocation strategy for the Portfolio reflects the need for reduced equity risk and lower volatility of the inflation-adjusted income the Portfolio may be able to support in retirement as an investor gets closer to the target date. When the Portfolio reaches the landing point, it is expected that the Advisor will recommend that the Board of Directors of the Portfolio approve combining the Portfolio with the Dimensional Retirement Income Fund, another fund managed by the Advisor, which is expected to have approximately the same asset allocation as the Portfolio at that time.

As of February 28, 2022, the 2035 Target Date Portfolio has a target allocation of 50% to 70% to equity Underlying Funds and a target allocation of approximately 30% to 50% to fixed income Underlying Funds, which may include exposure through those fixed income Underlying Funds to long-term and intermediate-term U.S. Treasury Inflation-Protected Securities (“TIPS”). As of February 28, 2022, the Portfolio may invest in: (1) domestic equity Underlying Funds that purchase a broad and diverse portfolio of securities of U.S. operating companies; (2) international equity Underlying Funds that purchase a broad and diverse portfolio of securities of companies in developed and emerging markets; 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, long-, intermediate- and short-term TIPS, 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. The fixed income Underlying Funds primarily invest in securities that are considered investment grade at the time of purchase and which have a range of maturities, including ultra-short, short, intermediate, and long-term. Certain equity Underlying Funds purchase a broad and diverse group of securities of companies with a greater emphasis on smaller capitalization, lower relative price, and higher profitability companies as compared to their representation in the universe of securities such Underlying Funds invest in. A summary of the investment strategies and policies of the Underlying Funds in which the Portfolio invests as of the date of this Prospectus is described in the Portfolio’s Prospectus in the section entitled “ADDITIONAL INFORMATION ON INVESTMENT OBJECTIVES AND POLICIES.”

The 2035 Target Date Portfolio and each Underlying Fund may purchase or sell futures contracts and options on futures contracts, to adjust 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 Underlying Funds also may enter into swaps to hedge against inflation risk associated with certain securities or to buy or sell credit protection to hedge its credit exposure; gain market or issuer exposure without owning the underlying securities; or increase the Underlying Fund’s total return. Certain Underlying Funds also may purchase or sell futures contracts and options on futures contracts, to hedge their interest rate or currency exposure or for non-hedging purposes, such as a substitute for direct investment. Also, the Portfolio and the Underlying Funds may lend their portfolio securities to generate additional income.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Because the value of your investment in the 2035 Target Date 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.

Fund of Funds Risk: The investment performance of the Portfolio is affected by the investment performance of the Underlying Funds in which the Portfolio invests. The ability of the Portfolio to achieve its investment objective depends on the ability of the Underlying Funds to meet their investment objectives and on the Advisor’s decisions regarding the allocation of the Portfolio’s assets among the Underlying Funds. The Portfolio 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 the Portfolio or any Underlying Fund will be achieved. When the Portfolio invests in Underlying Funds, investors are exposed to a proportionate share of the expenses of those Underlying Funds in addition to the expenses of the Portfolio. Through its investments in Underlying Funds, the Portfolio is subject to the risks of the Underlying Funds’ investments. Certain of the risks of the Underlying Funds’ investments are described below.

Equity Market Risk: Even a long-term investment approach cannot guarantee a profit. Economic, market, political, and issuer-specific conditions and events will cause the value of equity securities, and the Underlying Fund that owns them, to rise or fall. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.

Market Risk: Even a long-term investment approach cannot guarantee a profit. Economic, political, and issuer-specific events will cause the value of securities, and the Underlying Fund that owns them, to rise or fall.

Foreign Securities and Currencies Risk: 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).

Foreign Government Debt Risk: 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’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.

Small and Mid-Cap Company Risk: 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.

Profitability Investment Risk: High relative profitability stocks may perform differently from the market as a whole and an investment strategy purchasing these securities may cause the Portfolio or an Underlying Fund to at times underperform equity funds that use other investment strategies.

Value Investment Risk: Value stocks may perform differently from the market as a whole and an investment strategy purchasing these securities may cause the Portfolio or an Underlying 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.

Emerging Markets Risk: 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.

Interest Rate Risk: 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. 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. The Portfolio may be subject to a greater risk of rising interest rates due to the current period of historically low interest rates.

Credit Risk: 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’s credit rating or a perceived change in an issuer’s financial strength may affect a security’s value, and thus, impact the Portfolio’s performance. 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’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&P or Fitch or Ba1 or below by Moody’s).

Risks of Investing for Inflation Protection: Because the interest and/or principal payments on an inflation-protected security are adjusted periodically for changes in inflation, the income distributed by an Underlying Fund may be irregular. Although the U.S. Treasury guarantees to pay at maturity at least the original face value of any inflation-protected securities the Treasury issues, other issuers may not offer the same guarantee. Also, inflation-protected securities, including those issued by the U.S. Treasury, are not protected against deflation. As a result, in a period of deflation, the inflation-protected securities held by an Underlying Fund may not pay any income and the Portfolio may suffer a loss during such periods. While inflation-protected securities are expected to be protected from long-term inflationary trends, short-term increases in inflation may lead to a decline in the Underlying Fund’s value. If interest rates rise due to reasons other than inflation, an Underlying Fund’s investment in these securities may not be protected to the extent that the increase is not reflected in the securities’ inflation measures. In addition, positive adjustments to principal generally will result in taxable income to the Underlying Fund at the time of such adjustments (which generally would be distributed by the Underlying Fund as part of its taxable dividends), even though the principal amount is not paid until maturity. The current market value of inflation-protected securities is not guaranteed and will fluctuate.

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.

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

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

Call Risk: 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 the Underlying Fund to reinvest in fixed income securities with lower interest rates than the original obligations.

Derivatives Risk: Derivatives are instruments, such as swaps, futures, 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 the Underlying 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 the Portfolio or Underlying 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 the Portfolio or an Underlying Fund uses derivatives, the Portfolio or Underlying 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 the risk of improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, rate or index, and the Portfolio or Underlying 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 an Underlying Fund is the seller of swaps and counterparty risk increases when an Underlying Fund is a buyer of swaps. In addition, where an Underlying Fund is the seller of swaps, it may be required to liquidate portfolio securities at inopportune times in order to meet payment obligations or segregation requirements. Swaps may be illiquid or difficult to value.

Liquidity Risk: Liquidity risk exists when particular portfolio investments are difficult to purchase or sell. To the extent that a fixed income Underlying Fund holds illiquid investments, the fixed income Underlying Fund’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 fixed income Underlying Fund due to low trading volume, adverse investor perceptions and/or other market developments. Liquidity risk includes the risk that a fixed income Underlying 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 an Underlying Fund are concentrated in one or a few investors.

Securities Lending Risk: Securities lending involves the risk that the borrower may fail to return the securities in a timely manner or at all. As a result, the Underlying Funds may lose money and there may be a delay in recovering the loaned securities. The Underlying Funds could also lose money if they do 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. To the extent that the Portfolio holds securities directly and lends those securities, it will be also subject to the foregoing risks with respect to its loaned securities.

Operational Risk: Operational risks include human error, changes in personnel, system changes, faults in communication, and failures in systems, technology, or processes. Various operational events or circumstances are outside the Advisor’s control, including instances at third parties. The Portfolio, Underlying Funds and the Advisor seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate to address these risks.

Cyber Security Risk: The Portfolio and Underlying Funds and their service providers’ use of internet, technology and information systems may expose the Portfolio and Underlying Funds to potential risks linked to cyber security breaches of those technological or information systems. Cyber security breaches, among other things, could allow an

unauthorized party to gain access to proprietary information, customer data, or fund assets, or cause the Portfolio, Underlying Funds and/or their service providers to suffer data corruption or lose operational functionality.

Risk Lose Money [Text]

rr_RiskLoseMoney

Because the value of your investment in the 2035 Target Date Portfolio will fluctuate, there is the risk that you will lose money.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Portfolio is not a deposit of a bank and is not insured or guaranteed by theFederal Deposit Insurance Corporation or any other government agency.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The bar chart and table immediately following illustrate the variability of the 2035 Target Date 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 one year, five year and since inception returns, both before and after taxes, compare with those of a broad measure of market performance. 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 http://us.dimensional.com.

The after-tax returns presented in the table for the 2035 Target Date 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 Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

http://us.dimensional.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Portfolio’s past performance (before and after taxes) is not an indication of future results.

Bar Chart [Heading]

rr_BarChartHeading

2035 Target Date Portfolio Institutional Class Shares—Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock


January 2016‑December 2021
Highest Quarter		Lowest Quarter
14.49% (4/20–6/20)		-12.92% (1/20–3/20)

Performance Table Heading

rr_PerformanceTableHeading

Annualized Returns (%) Periods ending December 31, 2021

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

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.

DIMENSIONAL 2035 TARGET DATE RETIREMENT INCOME FUND | INSTITUTIONAL CLASS

Shareholder Fees (fees paid directly from your investment)

rr_RiskReturnAbstract

rr_ShareholderFeeOther

none

Management Fee

rr_ManagementFeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.07%

Acquired Fund Fees and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.16%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.23%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

0.01%

^[1]

Total Annual Fund Operating Expenses After Expense Reimbursement

rr_NetExpensesOverAssets

0.22%

rr_ExpenseExampleYear01

$ 23

3 Years

rr_ExpenseExampleYear03

rr_ExpenseExampleYear05

129

10 Years

rr_ExpenseExampleYear10

292

rr_ExpenseExampleNoRedemptionYear01

3 Years

rr_ExpenseExampleNoRedemptionYear03

Highest Quarterly Return, Label

rr_ExpenseExampleNoRedemptionYear05

129

10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 292

2016

rr_AnnualReturn2016

8.38%

2017

rr_AnnualReturn2017

18.24%

2018

rr_AnnualReturn2018

(7.36%)

2019

rr_AnnualReturn2019

21.77%

2020

rr_AnnualReturn2020

16.43%

2021

rr_AnnualReturn2021

15.82%

rr_HighestQuarterlyReturnLabel

Highest Quarter

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

14.49%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Lowest Quarter

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Mar. 31, 2020

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(12.92%)

rr_AverageAnnualReturnYear01

15.82%

rr_AverageAnnualReturnYear05

12.46%

rr_AverageAnnualReturnSinceInception

10.93%

DIMENSIONAL 2035 TARGET DATE RETIREMENT INCOME FUND | Return After Taxes on Distributions | INSTITUTIONAL CLASS

rr_AverageAnnualReturnInceptionDate

Nov. 02, 2015

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

14.47%

rr_AverageAnnualReturnYear05

11.54%

rr_AverageAnnualReturnSinceInception

10.08%

DIMENSIONAL 2035 TARGET DATE RETIREMENT INCOME FUND | Return After Taxes on Distributions and Sale of Portfolio Shares | INSTITUTIONAL CLASS

rr_AverageAnnualReturnInceptionDate

Nov. 02, 2015

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

9.86%

rr_AverageAnnualReturnYear05

9.68%

rr_AverageAnnualReturnSinceInception

8.51%

DIMENSIONAL 2035 TARGET DATE RETIREMENT INCOME FUND | S&P Global BMI Index (net dividends) (reflects no deduction for fees, expenses, or taxes on sales)

rr_AverageAnnualReturnInceptionDate

Nov. 02, 2015

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

17.70%

rr_AverageAnnualReturnYear05

13.96%

DIMENSIONAL 2035 TARGET DATE RETIREMENT INCOME FUND | FTSE World Government Bond Index, 1-3 Years, Currency-Hedged in USD Terms (reflects no deduction for fees, expenses, or taxes on sales)

rr_AverageAnnualReturnSinceInception

12.08%

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

(0.37%)

rr_AverageAnnualReturnYear05

1.64%

DIMENSIONAL 2035 TARGET DATE RETIREMENT INCOME FUND | S&P STRIDE Glide Path 2035 Index (reflects no deduction for fees, expenses, or taxes on sales)

rr_AverageAnnualReturnSinceInception

1.51%

rr_RiskReturnAbstract

rr_AverageAnnualReturnYear01

15.73%

rr_AverageAnnualReturnYear05

13.08%

rr_AverageAnnualReturnSinceInception

^[2]