010000 - Document - Document and Entity Information {Elements}
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020102 - Disclosure - Risk/Return Detail Data (U.S. Large Cap Equity Portfolio) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020104 - Disclosure - Risk/Return Detail Data (U.S. SMALL CAP VALUE PORTFOLIO) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020106 - Disclosure - Risk/Return Detail Data (U.S. Targeted Value Portfolio) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020108 - Disclosure - Risk/Return Detail Data (U.S. CORE EQUITY 1 PORTFOLIO) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020110 - Disclosure - Risk/Return Detail Data (U.S. CORE EQUITY 2 PORTFOLIO) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020112 - Disclosure - Risk/Return Detail Data (U.S. VECTOR EQUITY PORTFOLIO) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020114 - Disclosure - Risk/Return Detail Data (U.S. SMALL CAP PORTFOLIO) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020116 - Disclosure - Risk/Return Detail Data (U.S. MICRO CAP PORTFOLIO) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020118 - Disclosure - Risk/Return Detail Data (U.S. High Relative Profitability Portfolio) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020120 - Disclosure - Risk/Return Detail Data (DFA REAL ESTATE SECURITIES PORTFOLIO) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020122 - Disclosure - Risk/Return Detail Data (U.S. Large Cap Growth Portfolio) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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020124 - Disclosure - Risk/Return Detail Data (U.S. Small Cap Growth Portfolio) {Elements}
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020101 - Schedule - Risk Table {Transposed}
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010004 - Schedule - Investment Risks {Unlabeled}
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