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v2.4.1.9

Statutory Capital and Surplus (Details) (USD $) | 12 Months Ended | 3 Months Ended | 0 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2014 | Jan. 02, 2013 | Dec. 31, 2011
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | $ 3,996,600,000 us-gaap_StockholdersEquity | $ 3,905,500,000 us-gaap_StockholdersEquity |  |  |  |
Amount available for dividend distributions without prior approval from regulatory authorities | 500,000,000 us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval |  |  |  |  |
Equity held in insurance and reinsurance subsidiaries | 2,100,000,000 wtm_AmountNotAvailableForDividendDistribution |  |  |  |  |
Distributions made | 6,200,000 us-gaap_PaymentsOfDividends |  |  |  |  |
Fair value investments | 5,991,400,000 us-gaap_InvestmentsFairValueDisclosure | 6,766,500,000 us-gaap_InvestmentsFairValueDisclosure | 6,950,700,000 us-gaap_InvestmentsFairValueDisclosure |  |  |
Trading Securities | 4,796,500,000 us-gaap_TradingSecurities |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Other long-term investments | 408,200,000 us-gaap_OtherLongTermInvestments | 288,900,000 us-gaap_OtherLongTermInvestments |  |  |  |
Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | 1,604,100,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 1,459,600,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Unrestricted cash | 20,400,000 wtm_NetUnrestrictedCashShortTermAndFixedMaturityInvestments / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Cash Dividends Paid to Parent Company | 50,000,000 us-gaap_CashDividendsPaidToParentCompany / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory net income (loss) | (14,200,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember | 100,100,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember | 82,000,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |
Stockholders' Equity Attributable to Parent | 788,400,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember | 830,600,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
Distributions made | 80,000,000 us-gaap_PaymentsOfDividends / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Unrestricted cash | 107,000,000 wtm_NetUnrestrictedCashShortTermAndFixedMaturityInvestments / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Other Operations |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | 1,038,600,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember | 1,025,800,000 us-gaap_StockholdersEquity / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |
Unrestricted cash | 275,100,000 wtm_NetUnrestrictedCashShortTermAndFixedMaturityInvestments / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Other long-term investments | 106,400,000 us-gaap_OtherLongTermInvestments / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Unregulated Operation | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Distributions made | 4,800,000 us-gaap_PaymentsOfDividends / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_UnregulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember | 17,300,000 us-gaap_PaymentsOfDividends / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_UnregulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
Surplus notes | 101,000,000 us-gaap_SurplusNotes / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_UnregulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Unrestricted cash | 78,100,000 wtm_NetUnrestrictedCashShortTermAndFixedMaturityInvestments / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_UnregulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Star & Shield Insurance Exchange [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Surplus notes | 17,000,000 us-gaap_SurplusNotes / dei_LegalEntityAxis = wtm_StarShieldInsuranceExchangeMember |  |  |  |  |
Star & Shield Insurance Exchange [Member] | Other Operations |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 6,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_StarShieldInsuranceExchangeMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Statutory net income (loss) | (9,500,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_StarShieldInsuranceExchangeMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Surplus required | 2,800,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_StarShieldInsuranceExchangeMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Alstead [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 25,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_AlsteadMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Surplus required | 1,100,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_AlsteadMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Central National [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus |  | 9,300,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_CentralNationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Sirius Bermuda [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 2,400,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_SiriusBermudaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Surplus required | 1,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_SiriusBermudaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Amount available for dividend distributions without prior approval from regulatory authorities | 350,000,000 us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval / dei_LegalEntityAxis = wtm_SiriusBermudaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Percentage of prior year statutory surplus that may be paid as dividends without prior approval of regulatory authorities | 15.00%wtm_DividendPaymentWithoutPriorApprovalOfRegulatoryAuthoritiesPercentageOfPriorYearStatutorySurplus / dei_LegalEntityAxis = wtm_SiriusBermudaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Woodridge [Domain] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 8,300,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_WoodridgeDomain / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 8,400,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_WoodridgeDomain / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Statutory net income (loss) | (200,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_WoodridgeDomain / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | (100,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_WoodridgeDomain / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 100,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_WoodridgeDomain / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |
Surplus required | 2,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_WoodridgeDomain / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Dividends available, net of noncontrolling interest | 199,000,000 wtm_AmountAvailableForDividendDistributionWithoutPriorApprovalFromRegulatoryAgencyInOnebeaconRegulatedEntities / dei_LegalEntityAxis = wtm_OnebeaconMember |  |  |  |  |
Sirius International | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 2,300,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Surplus required | 158,200,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Restricted equity | 1,400,000,000 us-gaap_StatutoryAccountingPracticesRetainedEarningsNotAvailableForDividends / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Cash Dividends Paid to Parent Company | 220,900,000 us-gaap_CashDividendsPaidToParentCompany / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Statutory capital and surplus required, percent | 125.00%wtm_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequiredPercent / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Maximum contributions per bankruptcy agreement | 200,000,000 wtm_MaximumContributionsPerCapitalMaintenanceAgreement / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Ratio limitation | 70.00%wtm_StopLossLimitation / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Expense limitation | 90,000,000 wtm_StopLossLimitationAmount / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Amount of safety reserve | 1,300,000,000 wtm_StatutoryAccountingPracticesSafetyReserve / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Exchange rate | 7.77 us-gaap_ForeignCurrencyExchangeRateTranslation1 / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Deferred Tax Liabilities, Safety Reserve | 295,700,000 wtm_DeferredTaxLiabilitiesSafetyReserve / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Sirius International | Regulated Operation | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Unrestricted statutory surplus available for distribution | 467,000,000 us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_RegulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
HG Global |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Surplus notes | 503,000,000 us-gaap_SurplusNotes / dei_LegalEntityAxis = wtm_HgGlobalMember | 503,000,000 us-gaap_SurplusNotes / dei_LegalEntityAxis = wtm_HgGlobalMember |  |  |  |
HG Global | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Preferred stock, value | 613,000,000 us-gaap_PreferredStockValue / dei_LegalEntityAxis = wtm_HgGlobalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
Ownership interest (as a percent) | 96.90%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = wtm_HgGlobalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
Preferred stock dividend rate | 6.00%us-gaap_PreferredStockDividendRatePercentage / dei_LegalEntityAxis = wtm_HgGlobalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
HG Re | HG Global-BAM |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 444,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_HgReMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
Collateral Held in Supplement Trust | 402,600,000 wtm_CollateralHeldInSupplementTrust / dei_LegalEntityAxis = wtm_HgReMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Accrued interest on surplus notes | 44,300,000 wtm_AccruedInterestOnSurplusNotes / dei_LegalEntityAxis = wtm_HgReMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
BAM | HG Global-BAM |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 448,700,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
Surplus required | 66,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
Subsidiaries |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | 2,600,000,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = wtm_InsuranceAndReinsuranceSubsidiariesMember |  |  |  |  |
One Beacon Insurance Company | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Distributions made | 700,500,000 us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = wtm_OneBeaconInsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Noncash distribution received | 151,200,000 wtm_NoncashorPartNoncashDistributionReceived / dei_LegalEntityAxis = wtm_OneBeaconInsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Payments of Capital Distribution |  | 190,000,000 us-gaap_PaymentsOfCapitalDistribution / dei_LegalEntityAxis = wtm_OneBeaconInsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
Proceeds from Contributions from Affiliates |  | 35,000,000 us-gaap_ProceedsFromContributionsFromAffiliates / dei_LegalEntityAxis = wtm_OneBeaconInsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
Split Rock [Member] | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 122,600,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember | 96,400,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
Statutory net income (loss) | 46,200,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember | (38,700,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
Distributions made | 10,000,000 us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Payments of Capital Distribution |  |  |  | 10,000,000 us-gaap_PaymentsOfCapitalDistribution / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |
Proceeds from Contributions from Affiliates | 135,100,000 us-gaap_ProceedsFromContributionsFromAffiliates / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
White Mountains | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Distributions made |  | 60,300,000 us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = wtm_WhiteMountainsMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
White Mountains | Other Operations |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Proceeds from Contributions from Affiliates | 15,000,000 us-gaap_ProceedsFromContributionsFromAffiliates / dei_LegalEntityAxis = wtm_WhiteMountainsMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Unrestricted cash | 25,700,000 wtm_NetUnrestrictedCashShortTermAndFixedMaturityInvestments / dei_LegalEntityAxis = wtm_WhiteMountainsMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Atlantic Speciality Insurance Company (ASIC) [Member] | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Surplus required | 136,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_AtlanticSpecialityInsuranceCompanyAsicMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Payments of Capital Distribution | 67,000,000 us-gaap_PaymentsOfCapitalDistribution / dei_LegalEntityAxis = wtm_AtlanticSpecialityInsuranceCompanyAsicMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember | 190,000,000 us-gaap_PaymentsOfCapitalDistribution / dei_LegalEntityAxis = wtm_AtlanticSpecialityInsuranceCompanyAsicMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |
Atlantic Speciality Insurance Company (ASIC) [Member] | Regulated Operation | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 721,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_AtlanticSpecialityInsuranceCompanyAsicMember / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_RegulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Amount available for dividend distributions without prior approval from regulatory authorities | 44,900,000 us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval / dei_LegalEntityAxis = wtm_AtlanticSpecialityInsuranceCompanyAsicMember / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_RegulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Statutory accounting practices earned surplus | 87,800,000 wtm_StatutoryAccountingPracticesEarnedSurplus / dei_LegalEntityAxis = wtm_AtlanticSpecialityInsuranceCompanyAsicMember / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_RegulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Sirius America | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 620,600,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 548,400,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Statutory net income (loss) | 56,100,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 55,900,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 26,200,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |
Surplus required | 106,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Statutory accounting practices earned surplus | 81,900,000 wtm_StatutoryAccountingPracticesEarnedSurplus / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Percentage of prior year statutory surplus that may be paid as dividends without prior approval of regulatory authorities |  | 10.00%wtm_DividendPaymentWithoutPriorApprovalOfRegulatoryAuthoritiesPercentageOfPriorYearStatutorySurplus / dei_LegalEntityAxis = wtm_SiriusAmericaMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Oakwood | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 29,400,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_OakwoodMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 20,700,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_OakwoodMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Statutory net income (loss) | (800,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_OakwoodMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | (900,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_OakwoodMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 3,900,000 us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_OakwoodMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |
Surplus required | 8,100,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_OakwoodMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Ashmere [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 12,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_AshmereMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 12,700,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_AshmereMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Statutory net income (loss) | (500,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_AshmereMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | (400,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_AshmereMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Surplus required | 2,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_AshmereMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Empire [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 10,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_EmpireMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 10,700,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_EmpireMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Statutory net income (loss) | (600,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_EmpireMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | (10,400,000)us-gaap_StatutoryAccountingPracticesStatutoryNetIncomeAmount / dei_LegalEntityAxis = wtm_EmpireMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Surplus required | 3,400,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_EmpireMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
White Shoals Reinsurance Company | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 22,400,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_WhiteShoalsReinsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 14,600,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_WhiteShoalsReinsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
Surplus required | 8,200,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_WhiteShoalsReinsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember | 6,200,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_WhiteShoalsReinsuranceCompanyMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |
White Mountains Life Re | Other Operations |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 76,000,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_WhiteMountainsLifeReMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember | 85,900,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_WhiteMountainsLifeReMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |
Surplus required | 400,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_WhiteMountainsLifeReMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Olympus [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 12,300,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / dei_LegalEntityAxis = wtm_OlympusMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Surplus required | 2,600,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_OlympusMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Surplus Note | BAM | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Interest rate (as a percent) | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = wtm_SurplusNoteMember / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
basis points | 3.00%wtm_Basispoints / us-gaap_DebtInstrumentAxis = wtm_SurplusNoteMember / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
SWEDEN | Sirius Group |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Effective income tax |  |  | 26.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations / us-gaap_IncomeTaxAuthorityAxis = country_SE / dei_LegalEntityAxis = wtm_SiriusGroupMember |  | 22.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations / us-gaap_IncomeTaxAuthorityAxis = country_SE / dei_LegalEntityAxis = wtm_SiriusGroupMember |
Preferred stocks | HG Global | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Dividends Payable | 96,200,000 us-gaap_DividendsPayableCurrentAndNoncurrent / dei_LegalEntityAxis = wtm_HgGlobalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember / us-gaap_StatementClassOfStockAxis = us-gaap_PreferredStockMember |  |  |  |  |
Preferred stocks | White Mountains | HG Global | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Dividends Payable | 93,300,000 us-gaap_DividendsPayableCurrentAndNoncurrent / dei_LegalEntityAxis = wtm_HgGlobalMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = wtm_WhiteMountainsMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember / us-gaap_StatementClassOfStockAxis = us-gaap_PreferredStockMember |  |  |  |  |
SEK |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Exchange rate | 7.7737 us-gaap_ForeignCurrencyExchangeRateTranslation1 / us-gaap_CurrencyAxis = currency_SEK | 6.4339 us-gaap_ForeignCurrencyExchangeRateTranslation1 / us-gaap_CurrencyAxis = currency_SEK | 6.4973 us-gaap_ForeignCurrencyExchangeRateTranslation1 / us-gaap_CurrencyAxis = currency_SEK |  |  |
SEK | Sirius International | Sirius Group |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Amount of safety reserve | 10,400,000,000 wtm_StatutoryAccountingPracticesSafetyReserve / us-gaap_CurrencyAxis = currency_SEK / dei_LegalEntityAxis = wtm_SiriusInternationalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Common Stock [Member] | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Trading Securities | 89,400,000 us-gaap_TradingSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_EquitySecuritiesandConvertibleFixedMaturityInvestmentsMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Common Equities [Member] | Other Operations |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Trading Securities | 172,700,000 us-gaap_TradingSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = wtm_CommonEquitiesMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OtherOperationsMember |  |  |  |  |
Retained earnings |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | 3,011,400,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 2,802,300,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | 2,542,700,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  | 2,789,700,000 us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Amount available for dividend distributions without prior approval from regulatory authorities | 958,000,000 us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |  |
Retained earnings | Split Rock [Member] | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Amount available for dividend distributions without prior approval from regulatory authorities | 18,800,000 us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |  |
Statutory Accounting Practices, Statutory Capital, Percent | 15.00%wtm_StatutoryAccountingPracticesStatutoryCapitalPercent / dei_LegalEntityAxis = wtm_SplitRockMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |  |
Retained earnings | Atlantic Speciality Insurance Company (ASIC) [Member] | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory Accounting Practices, Statutory Capital, Percent | 10.00%wtm_StatutoryAccountingPracticesStatutoryCapitalPercent / dei_LegalEntityAxis = wtm_AtlanticSpecialityInsuranceCompanyAsicMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |  |  |  |
U.S and Bermuda [Member] | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Statutory capital and surplus | 721,500,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember / us-gaap_StatementGeographicalAxis = wtm_U.SandBermudaMember | 866,200,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember / us-gaap_StatementGeographicalAxis = wtm_U.SandBermudaMember |  |  |  |
NAIC Risk-Based Capital [Member] | Ashmere [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Surplus required | 100,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_AshmereMember / us-gaap_RegulatoryAgencyAxis = wtm_NAICRiskBasedCapitalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
NAIC Risk-Based Capital [Member] | Empire [Member] | Sirius Group |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Surplus required | 1,200,000 us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired / dei_LegalEntityAxis = wtm_EmpireMember / us-gaap_RegulatoryAgencyAxis = wtm_NAICRiskBasedCapitalMember / us-gaap_StatementBusinessSegmentsAxis = wtm_SiriusGroupMember |  |  |  |  |
Surplus Note | Unregulated Operation | OneBeacon |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Fair value investments | $ 65,100,000 us-gaap_InvestmentsFairValueDisclosure / invest_InvestmentAxis = wtm_SurplusNoteMember / us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis = us-gaap_UnregulatedOperationMember / us-gaap_StatementBusinessSegmentsAxis = wtm_OnebeaconMember |  |  |  |  |
Combination One [Member] | Surplus Note | BAM | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Number of years of change in interest rate | 5 wtm_Numberofyearsofchangeininterestrate / us-gaap_DebtInstrumentAxis = wtm_SurplusNoteMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = wtm_CombinationOneMember / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
Combination Two [Member] | Surplus Note | BAM | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Number of years of change in interest rate | 3 wtm_Numberofyearsofchangeininterestrate / us-gaap_DebtInstrumentAxis = wtm_SurplusNoteMember / us-gaap_DebtInstrumentRedemptionPeriodAxis = wtm_CombinationTwoMember / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember |  |  |  |  |
US Treasury Rate [Member] | Surplus Note | BAM | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Interest rate (as a percent) | 3.13%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = wtm_SurplusNoteMember / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember / us-gaap_VariableRateAxis = wtm_USTreasuryRateMember |  |  |  |  |
Fixed interest rate [Member] | Surplus Note | BAM | HG Global-BAM |  |  |  |  |  |
Dividend Capacity |  |  |  |  |  |
Interest rate (as a percent) | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = wtm_SurplusNoteMember / dei_LegalEntityAxis = wtm_BamMember / us-gaap_StatementBusinessSegmentsAxis = wtm_HgGlobalBamMember / us-gaap_VariableRateAxis = wtm_FixedinterestrateMember |  |  |  |  |

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- Definition This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.9-06) -URI http://asc.fasb.org/extlink&oid=6882215&loc=d3e537971-122884 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 06 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph b -Article 12 + Details
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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 + Details
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