Annual Fund Operating Expenses |
Oct. 31, 2025 |
|||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DFA MN Municipal Bond Portfolio | DFA MN Municipal Bond Portfolio | Institutional Class | ||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.20% | [1] | ||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.20% | [1] | ||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.40% | [1] | ||||||||||||||||||
| Fee Waiver or Reimbursement | (0.10%) | [1],[2] | ||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.30% | [1] | ||||||||||||||||||
| DFA Oregon Municipal Bond Portfolio | DFA Oregon Municipal Bond Portfolio | Institutional Class | ||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.20% | [3] | ||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.09% | [3] | ||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.29% | [3] | ||||||||||||||||||
| Fee Waiver or Reimbursement | (0.04%) | [3],[4] | ||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.25% | [3] | ||||||||||||||||||
| Institutional Class Shares Prospectus | U.S. Large Company Portfolio | U.S. LARGE COMPANY PORTFOLIO | ||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.04% | [5] | ||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.03% | [5] | ||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.07% | [5] | ||||||||||||||||||
| Fee Waiver or Reimbursement | (0.01%) | [5],[6] | ||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.06% | [5] | ||||||||||||||||||
| ETF Class Shares Prospectus | U.S. Large Company Portfolio | ETF Class | ||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||
| Management Fees (as a percentage of Assets) | 0.04% | [7] | ||||||||||||||||||
| Other Expenses (as a percentage of Assets): | 0.05% | [7],[8] | ||||||||||||||||||
| Expenses (as a percentage of Assets) | 0.09% | [7] | ||||||||||||||||||
| Fee Waiver or Reimbursement | (0.03%) | [7],[9] | ||||||||||||||||||
| Net Expenses (as a percentage of Assets) | 0.06% | [7] | ||||||||||||||||||
| ||||||||||||||||||||