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Investment Securities (Fair Value of Hedge Funds Subject to Restrictions on Redemption Frequency) (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Hedge funds |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | $ 92.1 us-gaap_TradingSecuritiesOther / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsMember |
Private equity funds |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 150.4 us-gaap_TradingSecuritiesOther / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember |
Hedge and private equity funds included in other long-term investments |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 242.5 us-gaap_TradingSecuritiesOther / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsAndPrivateEquityFundsMember | 242.9 us-gaap_TradingSecuritiesOther / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsAndPrivateEquityFundsMember
Unfunded Commitments | 70.7 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsAndPrivateEquityFundsMember | 81.7 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsAndPrivateEquityFundsMember
Private equity funds | Private Equity Multi Sector |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 24.3 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityMultiSectorMember | 24.2 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityMultiSectorMember
Unfunded Commitments | 4.4 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityMultiSectorMember | 5.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityMultiSectorMember
Private equity funds | Private Equity Energy Infrastructure and Services |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 51.3 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityEnergyInfrastructureAndServicesMember | 59.6 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityEnergyInfrastructureAndServicesMember
Unfunded Commitments | 10.0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityEnergyInfrastructureAndServicesMember | 11.0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityEnergyInfrastructureAndServicesMember
Private equity funds | Real Estate Funds |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 2.0 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_RealEstateFundsMember | 3.6 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_RealEstateFundsMember
Unfunded Commitments | 0.1 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_RealEstateFundsMember | 3.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_RealEstateFundsMember
Private equity funds | Private Equity Secondaries |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 8.0 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquitySecondariesMember | 8.5 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquitySecondariesMember
Unfunded Commitments | 3.2 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquitySecondariesMember | 3.1 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquitySecondariesMember
Private equity funds | Private Equity Funds Multi Sector Europe |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 1.2 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsMultiSectorEuropeMember | 1.5 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsMultiSectorEuropeMember
Unfunded Commitments | 2.1 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsMultiSectorEuropeMember | 2.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsMultiSectorEuropeMember
Private equity funds | Private Equity Funds Manufacturing and Industrial |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 30.5 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsManufacturingAndIndustrialMember | 23.2 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsManufacturingAndIndustrialMember
Unfunded Commitments | 2.9 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsManufacturingAndIndustrialMember | 7.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityFundsManufacturingAndIndustrialMember
Private equity funds | Private Equity Healthcare |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 8.7 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityHealthcareMember | 6.1 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityHealthcareMember
Unfunded Commitments | 1.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityHealthcareMember | 2.8 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityHealthcareMember
Private equity funds | Private Equity Insurance |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 2.1 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityInsuranceMember | 2.1 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityInsuranceMember
Unfunded Commitments | 41.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityInsuranceMember | 41.2 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_PrivateEquityInsuranceMember
Private equity funds | Aerospace Defense Government |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 20.9 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_AerospaceDefenseGovernmentMember | 20.7 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_AerospaceDefenseGovernmentMember
Unfunded Commitments | 5.1 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_AerospaceDefenseGovernmentMember | 5.1 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_AerospaceDefenseGovernmentMember
Private equity funds | Venture Capital Funds |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 1.4 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_VentureCapitalFundsMember | 1.4 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_VentureCapitalFundsMember
Unfunded Commitments | 0.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_VentureCapitalFundsMember | 0.3 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_VentureCapitalFundsMember
Private equity funds | Private equity funds |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 150.4 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember | 150.9 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember
Unfunded Commitments | 70.7 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember | 81.7 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_PrivateEquityFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_PrivateEquityFundsMember
Hedge funds | Hedge Funds, Equity Long (Short) [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 44.3 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsEquityLongShortMember | 43.9 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsEquityLongShortMember
Unfunded Commitments | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsEquityLongShortMember | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsEquityLongShortMember
Hedge funds | Hedge Funds Credit and Distressed |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 20.0 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsCreditAndDistressedMember | 21.4 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsCreditAndDistressedMember
Unfunded Commitments | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsCreditAndDistressedMember | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsCreditAndDistressedMember
Hedge funds | Hedge Funds Equity R E I T |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 21.0 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityREITMember | 20.3 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityREITMember
Unfunded Commitments | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityREITMember | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityREITMember
Hedge funds | Hedge Funds Equity Activist |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 6.6 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityActivistMember | 6.2 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityActivistMember
Unfunded Commitments | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityActivistMember | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsEquityActivistMember
Hedge funds | Hedge Funds Bank Loan |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 0.2 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsBankLoanMember | 0.2 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsBankLoanMember
Unfunded Commitments | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsBankLoanMember | 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_HedgeFundsBankLoanMember
Hedge funds | Hedge funds |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Other long-term investments | 92.1 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsMember | 92.0 us-gaap_TradingSecuritiesOther / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsMember
Unfunded Commitments | $ 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsMember | $ 0 us-gaap_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments / us-gaap_InvestmentTypeAxis = us-gaap_HedgeFundsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_HedgeFundsMember

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