Expense Example	Oct. 31, 2025 USD ($)
DFA MN Municipal Bond Portfolio \| DFA MN Municipal Bond Portfolio \| Institutional Class
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 31
Expense Example, with Redemption, 3 Years	118
Expense Example, with Redemption, 5 Years	214
Expense Example, with Redemption, 10 Years	495
DFA Oregon Municipal Bond Portfolio \| DFA Oregon Municipal Bond Portfolio \| Institutional Class
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	26
Expense Example, with Redemption, 3 Years	89
Expense Example, with Redemption, 5 Years	159
Expense Example, with Redemption, 10 Years	364
Institutional Class Shares Prospectus \| U.S. Large Company Portfolio \| U.S. LARGE COMPANY PORTFOLIO
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	6
Expense Example, with Redemption, 3 Years	22
Expense Example, with Redemption, 5 Years	39
Expense Example, with Redemption, 10 Years	89
ETF Class Shares Prospectus \| U.S. Large Company Portfolio \| ETF Class
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	6
Expense Example, with Redemption, 3 Years	26
Expense Example, with Redemption, 5 Years	48
Expense Example, with Redemption, 10 Years	$ 112

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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