000001 - Document - Document and Entity Information
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020000 - Document - Risk/Return Summary {Unlabeled} - Mid Cap Growth Portfolio
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020001 - Schedule - Shareholder Fees
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020002 - Schedule - Annual Fund Operating Expenses
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020003 - Schedule - Expense Example {Transposed}
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020004 - Schedule - Annual Total Returns [Bar Chart]
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020005 - Schedule - Average Annual Returns {Transposed}
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020007 - Document - Risk/Return Summary {Unlabeled} - Core Fixed Income Portfolio
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020008 - Schedule - Shareholder Fees
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020009 - Schedule - Annual Fund Operating Expenses
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020010 - Schedule - Expense Example {Transposed}
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020011 - Schedule - Annual Total Returns [Bar Chart]
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020012 - Schedule - Average Annual Returns {Transposed}
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020014 - Document - Risk/Return Summary {Unlabeled} - Core Plus Fixed Income Portfolio
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020015 - Schedule - Shareholder Fees
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020016 - Schedule - Annual Fund Operating Expenses
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020017 - Schedule - Expense Example {Transposed}
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020018 - Schedule - Annual Total Returns [Bar Chart]
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020019 - Schedule - Average Annual Returns {Transposed}
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020021 - Document - Risk/Return Summary {Unlabeled} - Corporate Bond Portfolio
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020022 - Schedule - Shareholder Fees
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020023 - Schedule - Annual Fund Operating Expenses
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020024 - Schedule - Expense Example {Transposed}
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020025 - Schedule - Annual Total Returns [Bar Chart]
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020026 - Schedule - Average Annual Returns {Transposed}
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020028 - Document - Risk/Return Summary {Unlabeled} - High Yield Portfolio
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020029 - Schedule - Shareholder Fees
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020030 - Schedule - Annual Fund Operating Expenses
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020031 - Schedule - Expense Example {Transposed}
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020033 - Document - Risk/Return Summary {Unlabeled} - Limited Duration Portfolio
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020034 - Schedule - Shareholder Fees
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020035 - Schedule - Annual Fund Operating Expenses
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020036 - Schedule - Expense Example {Transposed}
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020037 - Schedule - Annual Total Returns [Bar Chart]
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020038 - Schedule - Average Annual Returns {Transposed}
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020040 - Document - Risk/Return Summary {Unlabeled} - Global Strategist Portfolio
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020041 - Schedule - Shareholder Fees
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020042 - Schedule - Annual Fund Operating Expenses
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020043 - Schedule - Expense Example {Transposed}
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020044 - Schedule - Annual Total Returns [Bar Chart]
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020045 - Schedule - Average Annual Returns {Transposed}
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020006 - Disclosure - Risk/Return Detail Data {Elements} - Mid Cap Growth Portfolio
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020013 - Disclosure - Risk/Return Detail Data {Elements} - Core Fixed Income Portfolio
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020020 - Disclosure - Risk/Return Detail Data {Elements} - Core Plus Fixed Income Portfolio
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020027 - Disclosure - Risk/Return Detail Data {Elements} - Corporate Bond Portfolio
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020032 - Disclosure - Risk/Return Detail Data {Elements} - High Yield Portfolio
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020039 - Disclosure - Risk/Return Detail Data {Elements} - Limited Duration Portfolio
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020046 - Disclosure - Risk/Return Detail Data {Elements} - Global Strategist Portfolio
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