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Commitments And Contingencies - Additional Information (Detail) $ in Millions	Sep. 30, 2015 USD ($)
Commitments and Contingencies [Line Items]
Commitment to purchase alternative investment	$ 50.0
Funded commitment amount	28.7
Unfunded Commitments | European Non-Performing Loan Fund, LP
Commitments and Contingencies [Line Items]
Future Funding Commitments	21.3
Unfunded Commitments | Equity Fund, LP
Commitments and Contingencies [Line Items]
Future Funding Commitments	$ 2.4

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- Definition

Commitment To Purchase Alternative Investment

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- Definition

Commitments And Contingencies [Line Items]

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- Definition

Funded Commitment Amount

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- Definition

Future Funding Commitments

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No definition available.

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- Details

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