10-K Filing

ASSURED GUARANTY LTD CIK: 1273813 FY 2024

Filing Information

Form Type	10-K
Accession Number	`0001273813-25-000011`
Period End Date	20241231
Filing Date	20250228
Fiscal Year	2024
Fiscal Period	FY
XBRL Instance	ago-20241231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 182 Income Statement 182 Cash Flow Statement 452 Stockholders Equity 66 Comprehensive Income 72

Balance Sheet 182 line items

Line Item	Tag	Value	Unit	Period
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$60.00M	USD	Point-in-time
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$60.00M	USD	Point-in-time
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$42.00M	USD	Point-in-time
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$42.00M	USD	Point-in-time
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$77.00M	USD	Point-in-time
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$77.00M	USD	Point-in-time
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$65.00M	USD	Point-in-time
Allowance for credit loss	`DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest`	$65.00M	USD	Point-in-time
Amortized Cost	`DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss`	$6.75B	USD	Point-in-time
Amortized Cost	`DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss`	$6.75B	USD	Point-in-time
Amortized Cost	`DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss`	$6.83B	USD	Point-in-time
Amortized Cost	`DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss`	$6.83B	USD	Point-in-time
Fixed-maturity securities, available-for-sale	`DebtSecuritiesAvailableForSaleExcludingAccruedInterest`	$6.37B	USD	Point-in-time
Fixed-maturity securities, available-for-sale	`DebtSecuritiesAvailableForSaleExcludingAccruedInterest`	$6.37B	USD	Point-in-time
Other invested assets, fair value disclosure	`OtherInvestmentsFairValueDisclosure`	$3.00M	USD	Point-in-time
Other invested assets, fair value disclosure	`OtherInvestmentsFairValueDisclosure`	$3.00M	USD	Point-in-time
Other invested assets, fair value disclosure	`OtherInvestmentsFairValueDisclosure`	$4.00M	USD	Point-in-time
Other invested assets, fair value disclosure	`OtherInvestmentsFairValueDisclosure`	$4.00M	USD	Point-in-time
Fixed-maturity securities, available-for-sale	`DebtSecuritiesAvailableForSaleExcludingAccruedInterest`	$6.31B	USD	Point-in-time
Fixed-maturity securities, available-for-sale	`DebtSecuritiesAvailableForSaleExcludingAccruedInterest`	$6.31B	USD	Point-in-time
Fixed-maturity securities, trading, at fair value	`TradingSecuritiesDebt`	$147.00M	USD	Point-in-time
Fixed-maturity securities, trading, at fair value	`TradingSecuritiesDebt`	$147.00M	USD	Point-in-time
Fixed-maturity securities, trading, at fair value	`TradingSecuritiesDebt`	$318.00M	USD	Point-in-time
Fixed-maturity securities, trading, at fair value	`TradingSecuritiesDebt`	$318.00M	USD	Point-in-time
Financial Guaranty variable interest entities assets	`VariableInterestEntityConsolidatedAssetsatFairValue`	$147.00M	USD	Point-in-time
Financial Guaranty variable interest entities assets	`VariableInterestEntityConsolidatedAssetsatFairValue`	$147.00M	USD	Point-in-time
Financial Guaranty variable interest entities assets	`VariableInterestEntityConsolidatedAssetsatFairValue`	$174.00M	USD	Point-in-time
Financial Guaranty variable interest entities assets	`VariableInterestEntityConsolidatedAssetsatFairValue`	$174.00M	USD	Point-in-time
Assets of consolidated investment vehicles, fair value disclosure	`AssetsofConsolidatedInvestmentVehiclesFairValueDisclosure`	$331.00M	USD	Point-in-time
Assets of consolidated investment vehicles, fair value disclosure	`AssetsofConsolidatedInvestmentVehiclesFairValueDisclosure`	$331.00M	USD	Point-in-time
Assets of consolidated investment vehicles, fair value disclosure	`AssetsofConsolidatedInvestmentVehiclesFairValueDisclosure`	$99.00M	USD	Point-in-time
Assets of consolidated investment vehicles, fair value disclosure	`AssetsofConsolidatedInvestmentVehiclesFairValueDisclosure`	$99.00M	USD	Point-in-time
Short-term investments, at fair value	`OtherShortTermInvestments`	$1.66B	USD	Point-in-time
Short-term investments, at fair value	`OtherShortTermInvestments`	$1.66B	USD	Point-in-time
Short-term investments, at fair value	`OtherShortTermInvestments`	$1.22B	USD	Point-in-time
Short-term investments, at fair value	`OtherShortTermInvestments`	$1.22B	USD	Point-in-time
Other assets, fair value disclosure	`OtherAssetsFairValueDisclosure`	$131.00M	USD	Point-in-time
Other assets, fair value disclosure	`OtherAssetsFairValueDisclosure`	$131.00M	USD	Point-in-time
Other invested assets (includes $4 and $3, at fair value)	`OtherInvestments`	$829.00M	USD	Point-in-time
Other invested assets (includes $4 and $3, at fair value)	`OtherInvestments`	$829.00M	USD	Point-in-time
Other assets, fair value disclosure	`OtherAssetsFairValueDisclosure`	$123.00M	USD	Point-in-time
Other assets, fair value disclosure	`OtherAssetsFairValueDisclosure`	$123.00M	USD	Point-in-time
Other invested assets (includes $4 and $3, at fair value)	`OtherInvestments`	$926.00M	USD	Point-in-time
Other invested assets (includes $4 and $3, at fair value)	`OtherInvestments`	$926.00M	USD	Point-in-time
Total investments	`Investments`	$8.66B	USD	Point-in-time
Total investments	`Investments`	$8.66B	USD	Point-in-time
Total investments	`Investments`	$9.12B	USD	Point-in-time
Total investments	`Investments`	$9.12B	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, with recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse`	$543.00M	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, with recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse`	$543.00M	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, with recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse`	$155.00M	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, with recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithRecourse`	$155.00M	USD	Point-in-time
Cash	`Cash`	$97.00M	USD	Point-in-time
Cash	`Cash`	$97.00M	USD	Point-in-time
Cash	`Cash`	$107.00M	USD	Point-in-time
Cash	`Cash`	$107.00M	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, without recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse`	$11.00M	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, without recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse`	$11.00M	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, without recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse`	$9.00M	USD	Point-in-time
Financial guaranty variable interest entities' liabilities, without recourse	`VariableInterestEntityConsolidatedCarryingAmountLiabilitiesWithoutRecourse`	$9.00M	USD	Point-in-time
Cash	`Cash`	$121.00M	USD	Point-in-time
Cash	`Cash`	$121.00M	USD	Point-in-time
Other liabilities at fair value	`OtherLiabilitiesFairValueDisclosure`	$34.00M	USD	Point-in-time
Other liabilities at fair value	`OtherLiabilitiesFairValueDisclosure`	$34.00M	USD	Point-in-time
Premiums receivable, net of commissions payable	`PremiumsReceivableAtCarryingValue`	$1.55B	USD	Point-in-time
Premiums receivable, net of commissions payable	`PremiumsReceivableAtCarryingValue`	$1.55B	USD	Point-in-time
Premiums receivable, net of commissions payable	`PremiumsReceivableAtCarryingValue`	$1.47B	USD	Point-in-time
Premiums receivable, net of commissions payable	`PremiumsReceivableAtCarryingValue`	$1.47B	USD	Point-in-time
Other liabilities at fair value	`OtherLiabilitiesFairValueDisclosure`	$53.00M	USD	Point-in-time
Other liabilities at fair value	`OtherLiabilitiesFairValueDisclosure`	$53.00M	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$147.00M	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$147.00M	USD	Point-in-time
Common stock par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$131.00M	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$131.00M	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$176.00M	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$176.00M	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$161.00M	USD	Point-in-time
Deferred acquisition costs	`DeferredPolicyAcquisitionCosts`	$161.00M	USD	Point-in-time
Common stock par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Salvage and subrogation recoverable	`SalvageAndSubrogationRecoveriesValue`	$298.00M	USD	Point-in-time
Salvage and subrogation recoverable	`SalvageAndSubrogationRecoveriesValue`	$298.00M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Salvage and subrogation recoverable	`SalvageAndSubrogationRecoveriesValue`	$396.00M	USD	Point-in-time
Salvage and subrogation recoverable	`SalvageAndSubrogationRecoveriesValue`	$396.00M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	500.00M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	56.22M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	56.22M	shares	Point-in-time
Financial guaranty variable interest entities assets (includes $147 and $174, at fair value)	`FinancialGuarantyOfVariableInterestEntitiesAssetsHeld`	$147.00M	USD	Point-in-time
Financial guaranty variable interest entities assets (includes $147 and $174, at fair value)	`FinancialGuarantyOfVariableInterestEntitiesAssetsHeld`	$147.00M	USD	Point-in-time
Financial guaranty variable interest entities assets (includes $147 and $174, at fair value)	`FinancialGuarantyOfVariableInterestEntitiesAssetsHeld`	$328.00M	USD	Point-in-time
Financial guaranty variable interest entities assets (includes $147 and $174, at fair value)	`FinancialGuarantyOfVariableInterestEntitiesAssetsHeld`	$328.00M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	50.51M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	50.51M	shares	Point-in-time
Assets of consolidated investment vehicles (includes $99 and $331, at fair value)	`AssetsofConsolidatedInvestmentVehicles`	$366.00M	USD	Point-in-time
Assets of consolidated investment vehicles (includes $99 and $331, at fair value)	`AssetsofConsolidatedInvestmentVehicles`	$366.00M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	50.51M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	50.51M	shares	Point-in-time
Assets of consolidated investment vehicles (includes $99 and $331, at fair value)	`AssetsofConsolidatedInvestmentVehicles`	$101.00M	USD	Point-in-time
Assets of consolidated investment vehicles (includes $99 and $331, at fair value)	`AssetsofConsolidatedInvestmentVehicles`	$101.00M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	56.22M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	56.22M	shares	Point-in-time
Other assets (includes $131 and $123, at fair value)	`OtherAssets`	$706.00M	USD	Point-in-time
Other assets (includes $131 and $123, at fair value)	`OtherAssets`	$706.00M	USD	Point-in-time
Accumulated other comprehensive income, tax provision	`AociTaxAttributableToParent`	$-67.00M	USD	Point-in-time
Accumulated other comprehensive income, tax provision	`AociTaxAttributableToParent`	$-67.00M	USD	Point-in-time
Accumulated other comprehensive income, tax provision	`AociTaxAttributableToParent`	$-75.00M	USD	Point-in-time
Accumulated other comprehensive income, tax provision	`AociTaxAttributableToParent`	$-75.00M	USD	Point-in-time
Other assets (includes $131 and $123, at fair value)	`OtherAssets`	$746.00M	USD	Point-in-time
Other assets (includes $131 and $123, at fair value)	`OtherAssets`	$746.00M	USD	Point-in-time
Total assets	`Assets`	$11.90B	USD	Point-in-time
Total assets	`Assets`	$11.90B	USD	Point-in-time
Total assets	`Assets`	$12.54B	USD	Point-in-time
Total assets	`Assets`	$12.54B	USD	Point-in-time
Unearned premium reserve	`UnearnedPremiums`	$3.66B	USD	Point-in-time
Unearned premium reserve	`UnearnedPremiums`	$3.66B	USD	Point-in-time
Unearned premium reserve	`UnearnedPremiums`	$3.72B	USD	Point-in-time
Unearned premium reserve	`UnearnedPremiums`	$3.72B	USD	Point-in-time
Loss and loss adjustment expense reserve	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$268.00M	USD	Point-in-time
Loss and loss adjustment expense reserve	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$268.00M	USD	Point-in-time
Loss and loss adjustment expense reserve	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$376.00M	USD	Point-in-time
Loss and loss adjustment expense reserve	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$376.00M	USD	Point-in-time
Long-term debt	`LongTermDebt`	$1.69B	USD	Point-in-time
Long-term debt	`LongTermDebt`	$1.69B	USD	Point-in-time
Long-term debt	`LongTermDebt`	$1.70B	USD	Point-in-time
Long-term debt	`LongTermDebt`	$1.70B	USD	Point-in-time
Financial guaranty variable interest entities liabilities, at fair value (with recourse $155 and $543, without recourse $9 and $11)	`VariableInterestEntityConsolidatedLiabilitiesAtFairValue`	$164.00M	USD	Point-in-time
Financial guaranty variable interest entities liabilities, at fair value (with recourse $155 and $543, without recourse $9 and $11)	`VariableInterestEntityConsolidatedLiabilitiesAtFairValue`	$164.00M	USD	Point-in-time
Financial guaranty variable interest entities liabilities, at fair value (with recourse $155 and $543, without recourse $9 and $11)	`VariableInterestEntityConsolidatedLiabilitiesAtFairValue`	$554.00M	USD	Point-in-time
Financial guaranty variable interest entities liabilities, at fair value (with recourse $155 and $543, without recourse $9 and $11)	`VariableInterestEntityConsolidatedLiabilitiesAtFairValue`	$554.00M	USD	Point-in-time
Other liabilities (includes $34000000 and $53000000 at fair value)	`OtherLiabilities`	$498.00M	USD	Point-in-time
Other liabilities (includes $34000000 and $53000000 at fair value)	`OtherLiabilities`	$498.00M	USD	Point-in-time
Other liabilities (includes $34000000 and $53000000 at fair value)	`OtherLiabilities`	$492.00M	USD	Point-in-time
Other liabilities (includes $34000000 and $53000000 at fair value)	`OtherLiabilities`	$492.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$6.35B	USD	Point-in-time
Total liabilities	`Liabilities`	$6.35B	USD	Point-in-time
Total liabilities	`Liabilities`	$6.77B	USD	Point-in-time
Total liabilities	`Liabilities`	$6.77B	USD	Point-in-time
Commitments and contingencies (Notes 3, 4, 7, 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Notes 3, 4, 7, 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Notes 3, 4, 7, 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Notes 3, 4, 7, 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common shares ($0.01 par value, 500,000,000 shares authorized; 50,505,320 and 56,217,305 shares issued and outstanding)	`CommonStockValue`	$1.00M	USD	Point-in-time
Common shares ($0.01 par value, 500,000,000 shares authorized; 50,505,320 and 56,217,305 shares issued and outstanding)	`CommonStockValue`	$1.00M	USD	Point-in-time
Common shares ($0.01 par value, 500,000,000 shares authorized; 50,505,320 and 56,217,305 shares issued and outstanding)	`CommonStockValue`	$1.00M	USD	Point-in-time
Common shares ($0.01 par value, 500,000,000 shares authorized; 50,505,320 and 56,217,305 shares issued and outstanding)	`CommonStockValue`	$1.00M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$6.07B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$6.07B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.88B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.88B	USD	Point-in-time
Accumulated other comprehensive income (loss), net of tax of $(75) and $(67)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-385.00M	USD	Point-in-time
Accumulated other comprehensive income (loss), net of tax of $(75) and $(67)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-385.00M	USD	Point-in-time
Accumulated other comprehensive income (loss), net of tax of $(75) and $(67)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-359.00M	USD	Point-in-time
Accumulated other comprehensive income (loss), net of tax of $(75) and $(67)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-359.00M	USD	Point-in-time
Deferred equity compensation	`CompensationAndBenefitsTrust`	$1.00M	USD	Point-in-time
Deferred equity compensation	`CompensationAndBenefitsTrust`	$1.00M	USD	Point-in-time
Deferred equity compensation	`CompensationAndBenefitsTrust`	$1.00M	USD	Point-in-time
Deferred equity compensation	`CompensationAndBenefitsTrust`	$1.00M	USD	Point-in-time
Total shareholders equity attributable to Assured Guaranty Ltd.	`StockholdersEquity`	$5.50B	USD	Point-in-time
Total shareholders equity attributable to Assured Guaranty Ltd.	`StockholdersEquity`	$5.50B	USD	Point-in-time
Total shareholders equity attributable to Assured Guaranty Ltd.	`StockholdersEquity`	$5.71B	USD	Point-in-time
Total shareholders equity attributable to Assured Guaranty Ltd.	`StockholdersEquity`	$5.71B	USD	Point-in-time
Nonredeemable noncontrolling interests (Note 8)	`MinorityInterest`	$52.00M	USD	Point-in-time
Nonredeemable noncontrolling interests (Note 8)	`MinorityInterest`	$52.00M	USD	Point-in-time
Nonredeemable noncontrolling interests (Note 8)	`MinorityInterest`	$58.00M	USD	Point-in-time
Nonredeemable noncontrolling interests (Note 8)	`MinorityInterest`	$58.00M	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.55B	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.55B	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.48B	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.48B	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.29B	USD	Point-in-time
Total shareholders equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.29B	USD	Point-in-time
Total liabilities and shareholders equity	`LiabilitiesAndStockholdersEquity`	$12.54B	USD	Point-in-time
Total liabilities and shareholders equity	`LiabilitiesAndStockholdersEquity`	$12.54B	USD	Point-in-time
Total liabilities and shareholders equity	`LiabilitiesAndStockholdersEquity`	$11.90B	USD	Point-in-time
Total liabilities and shareholders equity	`LiabilitiesAndStockholdersEquity`	$11.90B	USD	Point-in-time

Income Statement 182 line items

Line Item	Tag	Value	Unit	Period
Net earned premiums	`PremiumsEarnedNet`	$403.00M	USD	Annual
Net earned premiums	`PremiumsEarnedNet`	$403.00M	USD	Annual
Net earned premiums	`PremiumsEarnedNet`	$494.00M	USD	Annual
Net earned premiums	`PremiumsEarnedNet`	$494.00M	USD	Annual
Net earned premiums	`PremiumsEarnedNet`	$344.00M	USD	Annual
Net earned premiums	`PremiumsEarnedNet`	$344.00M	USD	Annual
Net investment income	`NetInvestmentIncome`	$269.00M	USD	Annual
Net investment income	`NetInvestmentIncome`	$269.00M	USD	Annual
Net investment income	`NetInvestmentIncome`	$340.00M	USD	Annual
Net investment income	`NetInvestmentIncome`	$340.00M	USD	Annual
Net investment income	`NetInvestmentIncome`	$365.00M	USD	Annual
Net investment income	`NetInvestmentIncome`	$365.00M	USD	Annual
Asset management fees	`RevenueFromContractWithCustomerExcludingAssessedTax`	$53.00M	USD	Annual
Asset management fees	`RevenueFromContractWithCustomerExcludingAssessedTax`	$53.00M	USD	Annual
Asset management fees	`RevenueFromContractWithCustomerExcludingAssessedTax`	$93.00M	USD	Annual
Asset management fees	`RevenueFromContractWithCustomerExcludingAssessedTax`	$93.00M	USD	Annual
Asset management fees	`RevenueFromContractWithCustomerExcludingAssessedTax`	-	USD	Annual
Asset management fees	`RevenueFromContractWithCustomerExcludingAssessedTax`	-	USD	Annual
Net realized investment gains (losses)	`RealizedInvestmentGainsLosses`	$-14.00M	USD	Annual
Net realized investment gains (losses)	`RealizedInvestmentGainsLosses`	$-14.00M	USD	Annual
Net realized investment gains (losses)	`RealizedInvestmentGainsLosses`	$-56.00M	USD	Annual
Net realized investment gains (losses)	`RealizedInvestmentGainsLosses`	$-56.00M	USD	Annual
Net realized investment gains (losses)	`RealizedInvestmentGainsLosses`	$9.00M	USD	Annual
Net realized investment gains (losses)	`RealizedInvestmentGainsLosses`	$9.00M	USD	Annual
Fair value gains (losses) on credit derivatives	`DerivativeGainLossOnDerivativeNet`	$24.00M	USD	Annual
Fair value gains (losses) on credit derivatives	`DerivativeGainLossOnDerivativeNet`	$24.00M	USD	Annual
Fair value gains (losses) on credit derivatives	`DerivativeGainLossOnDerivativeNet`	$114.00M	USD	Annual
Fair value gains (losses) on credit derivatives	`DerivativeGainLossOnDerivativeNet`	$114.00M	USD	Annual
Fair value gains (losses) on credit derivatives	`DerivativeGainLossOnDerivativeNet`	$-11.00M	USD	Annual
Fair value gains (losses) on credit derivatives	`DerivativeGainLossOnDerivativeNet`	$-11.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-10.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-10.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$24.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$24.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-35.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-35.00M	USD	Annual
Fair value gains (losses) on financial guaranty variable interest entities	`VariableInterestEntityChangeinFairValue`	$-11.00M	USD	Annual
Fair value gains (losses) on financial guaranty variable interest entities	`VariableInterestEntityChangeinFairValue`	$-11.00M	USD	Annual
Fair value gains (losses) on financial guaranty variable interest entities	`VariableInterestEntityChangeinFairValue`	$22.00M	USD	Annual
Fair value gains (losses) on financial guaranty variable interest entities	`VariableInterestEntityChangeinFairValue`	$22.00M	USD	Annual
Fair value gains (losses) on financial guaranty variable interest entities	`VariableInterestEntityChangeinFairValue`	$8.00M	USD	Annual
Fair value gains (losses) on financial guaranty variable interest entities	`VariableInterestEntityChangeinFairValue`	$8.00M	USD	Annual
Fair value gains (losses) on consolidated investment vehicles	`FairValueGainLossOnConsolidatedInvestmentVehicles`	$17.00M	USD	Annual
Fair value gains (losses) on consolidated investment vehicles	`FairValueGainLossOnConsolidatedInvestmentVehicles`	$17.00M	USD	Annual
Fair value gains (losses) on consolidated investment vehicles	`FairValueGainLossOnConsolidatedInvestmentVehicles`	$88.00M	USD	Annual
Fair value gains (losses) on consolidated investment vehicles	`FairValueGainLossOnConsolidatedInvestmentVehicles`	$88.00M	USD	Annual
Fair value gains (losses) on consolidated investment vehicles	`FairValueGainLossOnConsolidatedInvestmentVehicles`	$69.00M	USD	Annual
Fair value gains (losses) on consolidated investment vehicles	`FairValueGainLossOnConsolidatedInvestmentVehicles`	$69.00M	USD	Annual
Foreign exchange gains (losses) on remeasurement	`ForeignCurrencyTransactionGainLossBeforeTax`	$-27.00M	USD	Annual
Foreign exchange gains (losses) on remeasurement	`ForeignCurrencyTransactionGainLossBeforeTax`	$-27.00M	USD	Annual
Foreign exchange gains (losses) on remeasurement	`ForeignCurrencyTransactionGainLossBeforeTax`	$53.00M	USD	Annual
Foreign exchange gains (losses) on remeasurement	`ForeignCurrencyTransactionGainLossBeforeTax`	$53.00M	USD	Annual
Foreign exchange gains (losses) on remeasurement	`ForeignCurrencyTransactionGainLossBeforeTax`	$-112.00M	USD	Annual
Foreign exchange gains (losses) on remeasurement	`ForeignCurrencyTransactionGainLossBeforeTax`	$-112.00M	USD	Annual
Fair value gains (losses) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$52.00M	USD	Annual
Fair value gains (losses) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$52.00M	USD	Annual
Fair value gains (losses) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$74.00M	USD	Annual
Fair value gains (losses) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$74.00M	USD	Annual
Fair value gains (losses) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$-34.00M	USD	Annual
Fair value gains (losses) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$-34.00M	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Point-in-time
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Point-in-time
Other income (loss)	`OtherIncome`	$61.00M	USD	Annual
Other income (loss)	`OtherIncome`	$61.00M	USD	Annual
Other income (loss)	`OtherIncome`	$17.00M	USD	Annual
Other income (loss)	`OtherIncome`	$17.00M	USD	Annual
Other income (loss)	`OtherIncome`	$23.00M	USD	Annual
Other income (loss)	`OtherIncome`	$23.00M	USD	Annual
Total revenues	`Revenues`	$872.00M	USD	Annual
Total revenues	`Revenues`	$872.00M	USD	Annual
Total revenues	`Revenues`	$1.37B	USD	Annual
Total revenues	`Revenues`	$1.37B	USD	Annual
Total revenues	`Revenues`	$723.00M	USD	Annual
Total revenues	`Revenues`	$723.00M	USD	Annual
Loss and loss adjustment expenses (benefit)	`PolicyholderBenefitsAndClaimsIncurredNet`	$-26.00M	USD	Annual
Loss and loss adjustment expenses (benefit)	`PolicyholderBenefitsAndClaimsIncurredNet`	$-26.00M	USD	Annual
Loss and loss adjustment expenses (benefit)	`PolicyholderBenefitsAndClaimsIncurredNet`	$162.00M	USD	Annual
Loss and loss adjustment expenses (benefit)	`PolicyholderBenefitsAndClaimsIncurredNet`	$162.00M	USD	Annual
Loss and loss adjustment expenses (benefit)	`PolicyholderBenefitsAndClaimsIncurredNet`	$16.00M	USD	Annual
Loss and loss adjustment expenses (benefit)	`PolicyholderBenefitsAndClaimsIncurredNet`	$16.00M	USD	Annual
Interest expense	`InterestExpenseOperating`	$91.00M	USD	Annual
Interest expense	`InterestExpenseOperating`	$91.00M	USD	Annual
Interest expense	`InterestExpenseOperating`	$90.00M	USD	Annual
Interest expense	`InterestExpenseOperating`	$90.00M	USD	Annual
Interest expense	`InterestExpenseOperating`	$81.00M	USD	Annual
Interest expense	`InterestExpenseOperating`	$81.00M	USD	Annual
Amortization of deferred acquisition costs	`DeferredPolicyAcquisitionCostAmortizationExpense`	$20.00M	USD	Annual
Amortization of deferred acquisition costs	`DeferredPolicyAcquisitionCostAmortizationExpense`	$20.00M	USD	Annual
Amortization of deferred acquisition costs	`DeferredPolicyAcquisitionCostAmortizationExpense`	$14.00M	USD	Annual
Amortization of deferred acquisition costs	`DeferredPolicyAcquisitionCostAmortizationExpense`	$14.00M	USD	Annual
Amortization of deferred acquisition costs	`DeferredPolicyAcquisitionCostAmortizationExpense`	$13.00M	USD	Annual
Amortization of deferred acquisition costs	`DeferredPolicyAcquisitionCostAmortizationExpense`	$13.00M	USD	Annual
Employee compensation and benefit expenses	`EmployeeBenefitsAndShareBasedCompensation`	$251.00M	USD	Annual
Employee compensation and benefit expenses	`EmployeeBenefitsAndShareBasedCompensation`	$251.00M	USD	Annual
Employee compensation and benefit expenses	`EmployeeBenefitsAndShareBasedCompensation`	$202.00M	USD	Annual
Employee compensation and benefit expenses	`EmployeeBenefitsAndShareBasedCompensation`	$202.00M	USD	Annual
Employee compensation and benefit expenses	`EmployeeBenefitsAndShareBasedCompensation`	$258.00M	USD	Annual
Employee compensation and benefit expenses	`EmployeeBenefitsAndShareBasedCompensation`	$258.00M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$217.00M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$217.00M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$167.00M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$167.00M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$159.00M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$159.00M	USD	Annual
Total expenses	`BenefitsLossesAndExpenses`	$446.00M	USD	Annual
Total expenses	`BenefitsLossesAndExpenses`	$446.00M	USD	Annual
Total expenses	`BenefitsLossesAndExpenses`	$733.00M	USD	Annual
Total expenses	`BenefitsLossesAndExpenses`	$733.00M	USD	Annual
Total expenses	`BenefitsLossesAndExpenses`	$536.00M	USD	Annual
Total expenses	`BenefitsLossesAndExpenses`	$536.00M	USD	Annual
Income (loss) before income taxes and equity in earnings (losses) of investees	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$640.00M	USD	Annual
Income (loss) before income taxes and equity in earnings (losses) of investees	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$640.00M	USD	Annual
Income (loss) before income taxes and equity in earnings (losses) of investees	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$426.00M	USD	Annual
Income (loss) before income taxes and equity in earnings (losses) of investees	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$426.00M	USD	Annual
Income (loss) before income taxes and equity in earnings (losses) of investees	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$187.00M	USD	Annual
Income (loss) before income taxes and equity in earnings (losses) of investees	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$187.00M	USD	Annual
Equity in earnings (losses) of investees	`IncomeLossFromEquityMethodInvestments`	$-39.00M	USD	Annual
Equity in earnings (losses) of investees	`IncomeLossFromEquityMethodInvestments`	$-39.00M	USD	Annual
Equity in earnings (losses) of investees	`IncomeLossFromEquityMethodInvestments`	$62.00M	USD	Annual
Equity in earnings (losses) of investees	`IncomeLossFromEquityMethodInvestments`	$62.00M	USD	Annual
Equity in earnings (losses) of investees	`IncomeLossFromEquityMethodInvestments`	$28.00M	USD	Annual
Equity in earnings (losses) of investees	`IncomeLossFromEquityMethodInvestments`	$28.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$668.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$668.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$488.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$488.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$148.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$148.00M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$63.00M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$63.00M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$100.00M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$100.00M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$14.00M	USD	Annual
Current	`CurrentIncomeTaxExpenseBenefit`	$14.00M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-3.00M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-3.00M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-156.00M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-156.00M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-4.00M	USD	Annual
Deferred	`DeferredIncomeTaxExpenseBenefit`	$-4.00M	USD	Annual
Total provision (benefit) for income taxes	`IncomeTaxExpenseBenefit`	$11.00M	USD	Annual
Total provision (benefit) for income taxes	`IncomeTaxExpenseBenefit`	$11.00M	USD	Annual
Total provision (benefit) for income taxes	`IncomeTaxExpenseBenefit`	$96.00M	USD	Annual
Total provision (benefit) for income taxes	`IncomeTaxExpenseBenefit`	$96.00M	USD	Annual
Total provision (benefit) for income taxes	`IncomeTaxExpenseBenefit`	$-93.00M	USD	Annual
Total provision (benefit) for income taxes	`IncomeTaxExpenseBenefit`	$-93.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$761.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$761.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$392.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$392.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$137.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$137.00M	USD	Annual
Less: Noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$22.00M	USD	Annual
Less: Noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$22.00M	USD	Annual
Less: Noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$13.00M	USD	Annual
Less: Noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$13.00M	USD	Annual
Less: Noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$16.00M	USD	Annual
Less: Noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$16.00M	USD	Annual
Net income (loss) attributable to Assured Guaranty Ltd.	`NetIncomeLoss`	$739.00M	USD	Annual
Net income (loss) attributable to Assured Guaranty Ltd.	`NetIncomeLoss`	$739.00M	USD	Annual
Net income (loss) attributable to Assured Guaranty Ltd.	`NetIncomeLoss`	$376.00M	USD	Annual
Net income (loss) attributable to Assured Guaranty Ltd.	`NetIncomeLoss`	$376.00M	USD	Annual
Net income (loss) attributable to Assured Guaranty Ltd.	`NetIncomeLoss`	$124.00M	USD	Annual
Net income (loss) attributable to Assured Guaranty Ltd.	`NetIncomeLoss`	$124.00M	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$7.01	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$7.01	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$12.54	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$12.54	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.95	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.95	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$12.30	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$12.30	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.92	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.92	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$6.87	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$6.87	USD	Annual

Cash Flow Statement 452 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$761.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$761.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$392.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$392.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$137.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$137.00M	USD	Annual
Non-cash interest and operating expenses	`OtherNoncashIncomeExpense`	$-58.00M	USD	Annual
Non-cash interest and operating expenses	`OtherNoncashIncomeExpense`	$-58.00M	USD	Annual
Non-cash interest and operating expenses	`OtherNoncashIncomeExpense`	$-65.00M	USD	Annual
Non-cash interest and operating expenses	`OtherNoncashIncomeExpense`	$-65.00M	USD	Annual
Non-cash interest and operating expenses	`OtherNoncashIncomeExpense`	$-66.00M	USD	Annual
Non-cash interest and operating expenses	`OtherNoncashIncomeExpense`	$-66.00M	USD	Annual
Net amortization of premium (discount) on investments	`AccretionAmortizationOfDiscountsAndPremiumsInvestments`	$-5.00M	USD	Annual
Net amortization of premium (discount) on investments	`AccretionAmortizationOfDiscountsAndPremiumsInvestments`	$-5.00M	USD	Annual
Net amortization of premium (discount) on investments	`AccretionAmortizationOfDiscountsAndPremiumsInvestments`	$37.00M	USD	Annual
Net amortization of premium (discount) on investments	`AccretionAmortizationOfDiscountsAndPremiumsInvestments`	$37.00M	USD	Annual
Net amortization of premium (discount) on investments	`AccretionAmortizationOfDiscountsAndPremiumsInvestments`	$23.00M	USD	Annual
Net amortization of premium (discount) on investments	`AccretionAmortizationOfDiscountsAndPremiumsInvestments`	$23.00M	USD	Annual
Provision (benefit) for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-3.00M	USD	Annual
Provision (benefit) for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-3.00M	USD	Annual
Provision (benefit) for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-156.00M	USD	Annual
Provision (benefit) for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-156.00M	USD	Annual
Provision (benefit) for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-4.00M	USD	Annual
Provision (benefit) for deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-4.00M	USD	Annual
Net realized investment losses (gains)	`RealizedNoncashInvestmentsGainsLosses`	$-56.00M	USD	Annual
Net realized investment losses (gains)	`RealizedNoncashInvestmentsGainsLosses`	$-56.00M	USD	Annual
Net realized investment losses (gains)	`RealizedNoncashInvestmentsGainsLosses`	$9.00M	USD	Annual
Net realized investment losses (gains)	`RealizedNoncashInvestmentsGainsLosses`	$9.00M	USD	Annual
Net realized investment losses (gains)	`RealizedNoncashInvestmentsGainsLosses`	$-14.00M	USD	Annual
Net realized investment losses (gains)	`RealizedNoncashInvestmentsGainsLosses`	$-14.00M	USD	Annual
Equity in (earnings) losses of investees	`IncomeLossFromEquityMethodInvestments`	$-39.00M	USD	Annual
Equity in (earnings) losses of investees	`IncomeLossFromEquityMethodInvestments`	$-39.00M	USD	Annual
Equity in (earnings) losses of investees	`IncomeLossFromEquityMethodInvestments`	$62.00M	USD	Annual
Equity in (earnings) losses of investees	`IncomeLossFromEquityMethodInvestments`	$62.00M	USD	Annual
Equity in (earnings) losses of investees	`IncomeLossFromEquityMethodInvestments`	$28.00M	USD	Annual
Equity in (earnings) losses of investees	`IncomeLossFromEquityMethodInvestments`	$28.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-10.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-10.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$24.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$24.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-35.00M	USD	Annual
Fair value gains (losses) on committed capital securities	`FairValueGainLossOnCommittedCapitalSecurities`	$-35.00M	USD	Annual
Fair value losses (gains) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$52.00M	USD	Annual
Fair value losses (gains) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$52.00M	USD	Annual
Fair value losses (gains) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$74.00M	USD	Annual
Fair value losses (gains) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$74.00M	USD	Annual
Fair value losses (gains) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$-34.00M	USD	Annual
Fair value losses (gains) on trading securities	`DebtSecuritiesTradingUnrealizedGainLoss`	$-34.00M	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	-	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Annual
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Point-in-time
Gain on sale of asset management subsidiaries	`GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee`	$262.00M	USD	Point-in-time
Change in premiums receivable, net of premiums and commissions payable	`IncreaseDecreaseInPremiumsReceivable`	$80.00M	USD	Annual
Change in premiums receivable, net of premiums and commissions payable	`IncreaseDecreaseInPremiumsReceivable`	$80.00M	USD	Annual
Change in premiums receivable, net of premiums and commissions payable	`IncreaseDecreaseInPremiumsReceivable`	$157.00M	USD	Annual
Change in premiums receivable, net of premiums and commissions payable	`IncreaseDecreaseInPremiumsReceivable`	$157.00M	USD	Annual
Change in premiums receivable, net of premiums and commissions payable	`IncreaseDecreaseInPremiumsReceivable`	$-74.00M	USD	Annual
Change in premiums receivable, net of premiums and commissions payable	`IncreaseDecreaseInPremiumsReceivable`	$-74.00M	USD	Annual
Change in unearned premium reserve, net	`IncreaseDecreaseInUnearnedPremiums`	$-93.00M	USD	Annual
Change in unearned premium reserve, net	`IncreaseDecreaseInUnearnedPremiums`	$-93.00M	USD	Annual
Change in unearned premium reserve, net	`IncreaseDecreaseInUnearnedPremiums`	$62.00M	USD	Annual
Change in unearned premium reserve, net	`IncreaseDecreaseInUnearnedPremiums`	$62.00M	USD	Annual
Change in unearned premium reserve, net	`IncreaseDecreaseInUnearnedPremiums`	$26.00M	USD	Annual
Change in unearned premium reserve, net	`IncreaseDecreaseInUnearnedPremiums`	$26.00M	USD	Annual
Change in loss and loss adjustment expense reserve and salvage and subrogation recoverable, net	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$-202.00M	USD	Annual
Change in loss and loss adjustment expense reserve and salvage and subrogation recoverable, net	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$-202.00M	USD	Annual
Change in loss and loss adjustment expense reserve and salvage and subrogation recoverable, net	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$-1.21B	USD	Annual
Change in loss and loss adjustment expense reserve and salvage and subrogation recoverable, net	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$-1.21B	USD	Annual
Change in loss and loss adjustment expense reserve and salvage and subrogation recoverable, net	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$35.00M	USD	Annual
Change in loss and loss adjustment expense reserve and salvage and subrogation recoverable, net	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$35.00M	USD	Annual
Change in current income taxes	`IncreaseDecreaseInIncomeTaxes`	$-106.00M	USD	Annual
Change in current income taxes	`IncreaseDecreaseInIncomeTaxes`	$-106.00M	USD	Annual
Change in current income taxes	`IncreaseDecreaseInIncomeTaxes`	$72.00M	USD	Annual
Change in current income taxes	`IncreaseDecreaseInIncomeTaxes`	$72.00M	USD	Annual
Change in current income taxes	`IncreaseDecreaseInIncomeTaxes`	$-6.00M	USD	Annual
Change in current income taxes	`IncreaseDecreaseInIncomeTaxes`	$-6.00M	USD	Annual
Change in credit derivative assets and liabilities, net	`IncreaseDecreaseInDerivativeAssetsAndLiabilities`	$-8.00M	USD	Annual
Change in credit derivative assets and liabilities, net	`IncreaseDecreaseInDerivativeAssetsAndLiabilities`	$-8.00M	USD	Annual
Change in credit derivative assets and liabilities, net	`IncreaseDecreaseInDerivativeAssetsAndLiabilities`	$112.00M	USD	Annual
Change in credit derivative assets and liabilities, net	`IncreaseDecreaseInDerivativeAssetsAndLiabilities`	$112.00M	USD	Annual
Change in credit derivative assets and liabilities, net	`IncreaseDecreaseInDerivativeAssetsAndLiabilities`	$21.00M	USD	Annual
Change in credit derivative assets and liabilities, net	`IncreaseDecreaseInDerivativeAssetsAndLiabilities`	$21.00M	USD	Annual
Distributions from equity method investments	`EquityMethodInvestmentDividendsOrDistributions`	$47.00M	USD	Annual
Distributions from equity method investments	`EquityMethodInvestmentDividendsOrDistributions`	$47.00M	USD	Annual
Distributions from equity method investments	`EquityMethodInvestmentDividendsOrDistributions`	$10.00M	USD	Annual
Distributions from equity method investments	`EquityMethodInvestmentDividendsOrDistributions`	$10.00M	USD	Annual
Distributions from equity method investments	`EquityMethodInvestmentDividendsOrDistributions`	$7.00M	USD	Annual
Distributions from equity method investments	`EquityMethodInvestmentDividendsOrDistributions`	$7.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$97.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$97.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$47.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$47.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$19.00M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$19.00M	USD	Annual
Purchases of securities	`PurchasesofSecuritiesofConsolidatedInvestmentVehicles`	$340.00M	USD	Annual
Purchases of securities	`PurchasesofSecuritiesofConsolidatedInvestmentVehicles`	$340.00M	USD	Annual
Purchases of securities	`PurchasesofSecuritiesofConsolidatedInvestmentVehicles`	$97.00M	USD	Annual
Purchases of securities	`PurchasesofSecuritiesofConsolidatedInvestmentVehicles`	$97.00M	USD	Annual
Purchases of securities	`PurchasesofSecuritiesofConsolidatedInvestmentVehicles`	$3.20B	USD	Annual
Purchases of securities	`PurchasesofSecuritiesofConsolidatedInvestmentVehicles`	$3.20B	USD	Annual
Sales of securities	`ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles`	$41.00M	USD	Annual
Sales of securities	`ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles`	$41.00M	USD	Annual
Sales of securities	`ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles`	$1.51B	USD	Annual
Sales of securities	`ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles`	$1.51B	USD	Annual
Sales of securities	`ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles`	$675.00M	USD	Annual
Sales of securities	`ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles`	$675.00M	USD	Annual
Maturities and paydowns of securities	`MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles`	$60.00M	USD	Annual
Maturities and paydowns of securities	`MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles`	$60.00M	USD	Annual
Maturities and paydowns of securities	`MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles`	$156.00M	USD	Annual
Maturities and paydowns of securities	`MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles`	$156.00M	USD	Annual
Maturities and paydowns of securities	`MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles`	-	USD	Annual
Maturities and paydowns of securities	`MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles`	-	USD	Annual
Proceeds from (purchases of) money market funds	`ProceedsFromPaymentsForMoneyMarketFunds`	$-66.00M	USD	Annual
Proceeds from (purchases of) money market funds	`ProceedsFromPaymentsForMoneyMarketFunds`	$-66.00M	USD	Annual
Proceeds from (purchases of) money market funds	`ProceedsFromPaymentsForMoneyMarketFunds`	$-6.00M	USD	Annual
Proceeds from (purchases of) money market funds	`ProceedsFromPaymentsForMoneyMarketFunds`	$-6.00M	USD	Annual
Proceeds from (purchases of) money market funds	`ProceedsFromPaymentsForMoneyMarketFunds`	-	USD	Annual
Proceeds from (purchases of) money market funds	`ProceedsFromPaymentsForMoneyMarketFunds`	-	USD	Annual
Purchases to cover securities sold short	`PaymentsToCoverSecuritiesSoldShort`	-	USD	Annual
Purchases to cover securities sold short	`PaymentsToCoverSecuritiesSoldShort`	-	USD	Annual
Purchases to cover securities sold short	`PaymentsToCoverSecuritiesSoldShort`	-	USD	Annual
Purchases to cover securities sold short	`PaymentsToCoverSecuritiesSoldShort`	-	USD	Annual
Purchases to cover securities sold short	`PaymentsToCoverSecuritiesSoldShort`	$223.00M	USD	Annual
Purchases to cover securities sold short	`PaymentsToCoverSecuritiesSoldShort`	$223.00M	USD	Annual
Proceeds from securities sold short	`ProceedsFromSecuritiesSoldShort`	-	USD	Annual
Proceeds from securities sold short	`ProceedsFromSecuritiesSoldShort`	-	USD	Annual
Proceeds from securities sold short	`ProceedsFromSecuritiesSoldShort`	$188.00M	USD	Annual
Proceeds from securities sold short	`ProceedsFromSecuritiesSoldShort`	$188.00M	USD	Annual
Proceeds from securities sold short	`ProceedsFromSecuritiesSoldShort`	-	USD	Annual
Proceeds from securities sold short	`ProceedsFromSecuritiesSoldShort`	-	USD	Annual
Other changes in consolidated investment vehicles	`IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles`	$4.00M	USD	Annual
Other changes in consolidated investment vehicles	`IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles`	$4.00M	USD	Annual
Other changes in consolidated investment vehicles	`IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles`	$-85.00M	USD	Annual
Other changes in consolidated investment vehicles	`IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles`	$-85.00M	USD	Annual
Other changes in consolidated investment vehicles	`IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles`	$134.00M	USD	Annual
Other changes in consolidated investment vehicles	`IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles`	$134.00M	USD	Annual
Net cash flows provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$461.00M	USD	Annual
Net cash flows provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$461.00M	USD	Annual
Net cash flows provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$47.00M	USD	Annual
Net cash flows provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$47.00M	USD	Annual
Net cash flows provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-2.48B	USD	Annual
Net cash flows provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-2.48B	USD	Annual
Purchases	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$540.00M	USD	Annual
Purchases	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$540.00M	USD	Annual
Purchases	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$371.00M	USD	Annual
Purchases	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$371.00M	USD	Annual
Purchases	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$1.35B	USD	Annual
Purchases	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$1.35B	USD	Annual
Sales	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$649.00M	USD	Annual
Sales	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$649.00M	USD	Annual
Sales	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$717.00M	USD	Annual
Sales	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$717.00M	USD	Annual
Sales	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$862.00M	USD	Annual
Sales	`ProceedsFromSaleOfAvailableForSaleSecuritiesDebt`	$862.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$746.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$746.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$853.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$853.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$682.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities`	$682.00M	USD	Annual
Purchases	`PaymentsToAcquireShortTermInvestments`	$16.00M	USD	Annual
Purchases	`PaymentsToAcquireShortTermInvestments`	$16.00M	USD	Annual
Purchases	`PaymentsToAcquireShortTermInvestments`	$63.00M	USD	Annual
Purchases	`PaymentsToAcquireShortTermInvestments`	$63.00M	USD	Annual
Purchases	`PaymentsToAcquireShortTermInvestments`	$1.00M	USD	Annual
Purchases	`PaymentsToAcquireShortTermInvestments`	$1.00M	USD	Annual
Sales	`ProceedsFromSaleOfShortTermInvestments`	-	USD	Annual
Sales	`ProceedsFromSaleOfShortTermInvestments`	-	USD	Annual
Sales	`ProceedsFromSaleOfShortTermInvestments`	-	USD	Annual
Sales	`ProceedsFromSaleOfShortTermInvestments`	-	USD	Annual
Sales	`ProceedsFromSaleOfShortTermInvestments`	$4.00M	USD	Annual
Sales	`ProceedsFromSaleOfShortTermInvestments`	$4.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments`	$36.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments`	$36.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments`	$5.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments`	$5.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments`	$36.00M	USD	Annual
Maturities and paydowns	`ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments`	$36.00M	USD	Annual
Net sales (purchases) of short-term investments with original maturities of less than three months	`PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths`	$-437.00M	USD	Annual
Net sales (purchases) of short-term investments with original maturities of less than three months	`PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths`	$-437.00M	USD	Annual
Net sales (purchases) of short-term investments with original maturities of less than three months	`PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths`	$872.00M	USD	Annual
Net sales (purchases) of short-term investments with original maturities of less than three months	`PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths`	$872.00M	USD	Annual
Net sales (purchases) of short-term investments with original maturities of less than three months	`PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths`	$-439.00M	USD	Annual
Net sales (purchases) of short-term investments with original maturities of less than three months	`PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths`	$-439.00M	USD	Annual
Sales of fixed-maturity securities, trading	`ProceedsFromPaymentsForTradingSecurities`	$121.00M	USD	Annual
Sales of fixed-maturity securities, trading	`ProceedsFromPaymentsForTradingSecurities`	$121.00M	USD	Annual
Sales of fixed-maturity securities, trading	`ProceedsFromPaymentsForTradingSecurities`	$233.00M	USD	Annual
Sales of fixed-maturity securities, trading	`ProceedsFromPaymentsForTradingSecurities`	$233.00M	USD	Annual
Sales of fixed-maturity securities, trading	`ProceedsFromPaymentsForTradingSecurities`	-	USD	Annual
Sales of fixed-maturity securities, trading	`ProceedsFromPaymentsForTradingSecurities`	-	USD	Annual
Maturities and paydowns of fixed-maturity securities, trading	`ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment`	$87.00M	USD	Annual
Maturities and paydowns of fixed-maturity securities, trading	`ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment`	$87.00M	USD	Annual
Maturities and paydowns of fixed-maturity securities, trading	`ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment`	$63.00M	USD	Annual
Maturities and paydowns of fixed-maturity securities, trading	`ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment`	$63.00M	USD	Annual
Maturities and paydowns of fixed-maturity securities, trading	`ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment`	$21.00M	USD	Annual
Maturities and paydowns of fixed-maturity securities, trading	`ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment`	$21.00M	USD	Annual
Purchases of and contributions to other invested assets	`PaymentsToAcquireOtherInvestments`	$119.00M	USD	Annual
Purchases of and contributions to other invested assets	`PaymentsToAcquireOtherInvestments`	$119.00M	USD	Annual
Purchases of and contributions to other invested assets	`PaymentsToAcquireOtherInvestments`	$25.00M	USD	Annual
Purchases of and contributions to other invested assets	`PaymentsToAcquireOtherInvestments`	$25.00M	USD	Annual
Purchases of and contributions to other invested assets	`PaymentsToAcquireOtherInvestments`	$198.00M	USD	Annual
Purchases of and contributions to other invested assets	`PaymentsToAcquireOtherInvestments`	$198.00M	USD	Annual
Sales of and return of capital from other invested assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	$36.00M	USD	Annual
Sales of and return of capital from other invested assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	$36.00M	USD	Annual
Sales of and return of capital from other invested assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	$29.00M	USD	Annual
Sales of and return of capital from other invested assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	$29.00M	USD	Annual
Sales of and return of capital from other invested assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	$41.00M	USD	Annual
Sales of and return of capital from other invested assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	$41.00M	USD	Annual
Paydowns on financial guaranty variable interest entities assets	`ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets`	$84.00M	USD	Annual
Paydowns on financial guaranty variable interest entities assets	`ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets`	$84.00M	USD	Annual
Paydowns on financial guaranty variable interest entities assets	`ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets`	$23.00M	USD	Annual
Paydowns on financial guaranty variable interest entities assets	`ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets`	$23.00M	USD	Annual
Paydowns on financial guaranty variable interest entities assets	`ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets`	$175.00M	USD	Annual
Paydowns on financial guaranty variable interest entities assets	`ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets`	$175.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$3.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$3.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$8.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$8.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$3.00M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$3.00M	USD	Annual
Net cash flows provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$780.00M	USD	Annual
Net cash flows provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$780.00M	USD	Annual
Net cash flows provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$286.00M	USD	Annual
Net cash flows provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$286.00M	USD	Annual
Net cash flows provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$1.74B	USD	Annual
Net cash flows provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$1.74B	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$67.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$67.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$64.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$64.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$68.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$68.00M	USD	Annual
Repurchases of common shares	`PaymentsForRepurchaseOfCommonStock`	$500.00M	USD	Annual
Repurchases of common shares	`PaymentsForRepurchaseOfCommonStock`	$500.00M	USD	Annual
Repurchases of common shares	`PaymentsForRepurchaseOfCommonStock`	$502.00M	USD	Annual
Repurchases of common shares	`PaymentsForRepurchaseOfCommonStock`	$502.00M	USD	Annual
Repurchases of common shares	`PaymentsForRepurchaseOfCommonStock`	$199.00M	USD	Annual
Repurchases of common shares	`PaymentsForRepurchaseOfCommonStock`	$199.00M	USD	Annual
Net paydowns of financial guaranty variable interest entities liabilities	`PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities`	$99.00M	USD	Annual
Net paydowns of financial guaranty variable interest entities liabilities	`PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities`	$99.00M	USD	Annual
Net paydowns of financial guaranty variable interest entities liabilities	`PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities`	$149.00M	USD	Annual
Net paydowns of financial guaranty variable interest entities liabilities	`PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities`	$149.00M	USD	Annual
Net paydowns of financial guaranty variable interest entities liabilities	`PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities`	$375.00M	USD	Annual
Net paydowns of financial guaranty variable interest entities liabilities	`PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities`	$375.00M	USD	Annual
Issuance of long-term debt, net of issuance costs	`ProceedsFromDebtNetOfIssuanceCosts`	$345.00M	USD	Annual
Issuance of long-term debt, net of issuance costs	`ProceedsFromDebtNetOfIssuanceCosts`	$345.00M	USD	Annual
Issuance of long-term debt, net of issuance costs	`ProceedsFromDebtNetOfIssuanceCosts`	-	USD	Annual
Issuance of long-term debt, net of issuance costs	`ProceedsFromDebtNetOfIssuanceCosts`	-	USD	Annual
Issuance of long-term debt, net of issuance costs	`ProceedsFromDebtNetOfIssuanceCosts`	-	USD	Annual
Issuance of long-term debt, net of issuance costs	`ProceedsFromDebtNetOfIssuanceCosts`	-	USD	Annual
Redemptions and purchases of debt, including make-whole payment	`RepaymentsOfLongTermDebt`	-	USD	Annual
Redemptions and purchases of debt, including make-whole payment	`RepaymentsOfLongTermDebt`	-	USD	Annual
Redemptions and purchases of debt, including make-whole payment	`RepaymentsOfLongTermDebt`	$330.00M	USD	Annual
Redemptions and purchases of debt, including make-whole payment	`RepaymentsOfLongTermDebt`	$330.00M	USD	Annual
Redemptions and purchases of debt, including make-whole payment	`RepaymentsOfLongTermDebt`	$2.00M	USD	Annual
Redemptions and purchases of debt, including make-whole payment	`RepaymentsOfLongTermDebt`	$2.00M	USD	Annual
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$20.00M	USD	Annual
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$20.00M	USD	Annual
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.00M	USD	Annual
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.00M	USD	Annual
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$30.00M	USD	Annual
Payments related to tax withholding for share-based compensation	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$30.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$2.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$2.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$8.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$8.00M	USD	Annual
Proceeds from issuance of collateralized loan obligations	`ProceedsfromIssuanceofCollateralizedLoanObligations`	$1.37B	USD	Annual
Proceeds from issuance of collateralized loan obligations	`ProceedsfromIssuanceofCollateralizedLoanObligations`	$1.37B	USD	Annual
Proceeds from issuance of collateralized loan obligations	`ProceedsfromIssuanceofCollateralizedLoanObligations`	-	USD	Annual
Proceeds from issuance of collateralized loan obligations	`ProceedsfromIssuanceofCollateralizedLoanObligations`	-	USD	Annual
Proceeds from issuance of collateralized loan obligations	`ProceedsfromIssuanceofCollateralizedLoanObligations`	-	USD	Annual
Proceeds from issuance of collateralized loan obligations	`ProceedsfromIssuanceofCollateralizedLoanObligations`	-	USD	Annual
Repayment of collateralized loan obligations	`RepaymentsOfCollateralizedLoanObligations`	$373.00M	USD	Annual
Repayment of collateralized loan obligations	`RepaymentsOfCollateralizedLoanObligations`	$373.00M	USD	Annual
Repayment of collateralized loan obligations	`RepaymentsOfCollateralizedLoanObligations`	-	USD	Annual
Repayment of collateralized loan obligations	`RepaymentsOfCollateralizedLoanObligations`	-	USD	Annual
Repayment of collateralized loan obligations	`RepaymentsOfCollateralizedLoanObligations`	$1.00M	USD	Annual
Repayment of collateralized loan obligations	`RepaymentsOfCollateralizedLoanObligations`	$1.00M	USD	Annual
Proceeds from issuance of warehouse financing debt	`ProceedsFromIssuanceOfWarehouseLoansAndEquity`	-	USD	Annual
Proceeds from issuance of warehouse financing debt	`ProceedsFromIssuanceOfWarehouseLoansAndEquity`	-	USD	Annual
Proceeds from issuance of warehouse financing debt	`ProceedsFromIssuanceOfWarehouseLoansAndEquity`	-	USD	Annual
Proceeds from issuance of warehouse financing debt	`ProceedsFromIssuanceOfWarehouseLoansAndEquity`	-	USD	Annual
Proceeds from issuance of warehouse financing debt	`ProceedsFromIssuanceOfWarehouseLoansAndEquity`	$991.00M	USD	Annual
Proceeds from issuance of warehouse financing debt	`ProceedsFromIssuanceOfWarehouseLoansAndEquity`	$991.00M	USD	Annual
Repayment of warehouse financing debt	`RepaymentofWarehouseLoansandEquity`	$796.00M	USD	Annual
Repayment of warehouse financing debt	`RepaymentofWarehouseLoansandEquity`	$796.00M	USD	Annual
Repayment of warehouse financing debt	`RepaymentofWarehouseLoansandEquity`	-	USD	Annual
Repayment of warehouse financing debt	`RepaymentofWarehouseLoansandEquity`	-	USD	Annual
Repayment of warehouse financing debt	`RepaymentofWarehouseLoansandEquity`	$166.00M	USD	Annual
Repayment of warehouse financing debt	`RepaymentofWarehouseLoansandEquity`	$166.00M	USD	Annual
Contributions from noncontrolling interests to consolidated investment vehicles	`ContributionsFromNoncontrollingInterestsToInvestmentVehicles`	$74.00M	USD	Annual
Contributions from noncontrolling interests to consolidated investment vehicles	`ContributionsFromNoncontrollingInterestsToInvestmentVehicles`	$74.00M	USD	Annual
Contributions from noncontrolling interests to consolidated investment vehicles	`ContributionsFromNoncontrollingInterestsToInvestmentVehicles`	-	USD	Annual
Contributions from noncontrolling interests to consolidated investment vehicles	`ContributionsFromNoncontrollingInterestsToInvestmentVehicles`	-	USD	Annual
Contributions from noncontrolling interests to consolidated investment vehicles	`ContributionsFromNoncontrollingInterestsToInvestmentVehicles`	-	USD	Annual
Contributions from noncontrolling interests to consolidated investment vehicles	`ContributionsFromNoncontrollingInterestsToInvestmentVehicles`	-	USD	Annual
Distributions to noncontrolling interests from consolidated investment vehicles	`DistributionsToNoncontrollingInterestsFromInvestmentVehicles`	$10.00M	USD	Annual
Distributions to noncontrolling interests from consolidated investment vehicles	`DistributionsToNoncontrollingInterestsFromInvestmentVehicles`	$10.00M	USD	Annual
Distributions to noncontrolling interests from consolidated investment vehicles	`DistributionsToNoncontrollingInterestsFromInvestmentVehicles`	$80.00M	USD	Annual
Distributions to noncontrolling interests from consolidated investment vehicles	`DistributionsToNoncontrollingInterestsFromInvestmentVehicles`	$80.00M	USD	Annual
Distributions to noncontrolling interests from consolidated investment vehicles	`DistributionsToNoncontrollingInterestsFromInvestmentVehicles`	$26.00M	USD	Annual
Distributions to noncontrolling interests from consolidated investment vehicles	`DistributionsToNoncontrollingInterestsFromInvestmentVehicles`	$26.00M	USD	Annual
Borrowing (payment) under credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$-4.00M	USD	Annual
Borrowing (payment) under credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$-4.00M	USD	Annual
Borrowing (payment) under credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$41.00M	USD	Annual
Borrowing (payment) under credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	$41.00M	USD	Annual
Borrowing (payment) under credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	-	USD	Annual
Borrowing (payment) under credit facility	`ProceedsFromRepaymentsOfLinesOfCredit`	-	USD	Annual
Net cash flows provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$612.00M	USD	Annual
Net cash flows provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$612.00M	USD	Annual
Net cash flows provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-670.00M	USD	Annual
Net cash flows provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-670.00M	USD	Annual
Net cash flows provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-983.00M	USD	Annual
Net cash flows provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-983.00M	USD	Annual
Effect of foreign exchange rate changes	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.00M	USD	Annual
Effect of foreign exchange rate changes	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.00M	USD	Annual
Effect of foreign exchange rate changes	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-8.00M	USD	Annual
Effect of foreign exchange rate changes	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-8.00M	USD	Annual
Effect of foreign exchange rate changes	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-2.00M	USD	Annual
Effect of foreign exchange rate changes	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-2.00M	USD	Annual
Increase (decrease) in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$79.00M	USD	Annual
Increase (decrease) in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$79.00M	USD	Annual
Increase (decrease) in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-158.00M	USD	Annual
Increase (decrease) in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-158.00M	USD	Annual
Increase (decrease) in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-135.00M	USD	Annual
Increase (decrease) in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-135.00M	USD	Annual
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$342.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$342.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$286.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$286.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$207.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$207.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$128.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$128.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$342.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$342.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$286.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$286.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$207.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$207.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$128.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$128.00M	USD	Point-in-time
Income taxes paid (received)	`IncomeTaxesPaidNet`	$4.00M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$4.00M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$90.00M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$90.00M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$105.00M	USD	Annual
Income taxes paid (received)	`IncomeTaxesPaidNet`	$105.00M	USD	Annual
Interest paid on long-term debt	`InterestPaidNet`	$77.00M	USD	Annual
Interest paid on long-term debt	`InterestPaidNet`	$77.00M	USD	Annual
Interest paid on long-term debt	`InterestPaidNet`	$77.00M	USD	Annual
Interest paid on long-term debt	`InterestPaidNet`	$77.00M	USD	Annual
Interest paid on long-term debt	`InterestPaidNet`	$88.00M	USD	Annual
Interest paid on long-term debt	`InterestPaidNet`	$88.00M	USD	Annual
Fixed-maturity securities, available-for-sale, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale`	-	USD	Annual
Fixed-maturity securities, available-for-sale, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale`	-	USD	Annual
Fixed-maturity securities, available-for-sale, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale`	$-1.00M	USD	Annual
Fixed-maturity securities, available-for-sale, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale`	$-1.00M	USD	Annual
Fixed-maturity securities, available-for-sale, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale`	$-986.00M	USD	Annual
Fixed-maturity securities, available-for-sale, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale`	$-986.00M	USD	Annual
Fixed-maturity securities, available-for-sale, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale`	-	USD	Annual
Fixed-maturity securities, available-for-sale, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale`	-	USD	Annual
Fixed-maturity securities, available-for-sale, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale`	$27.00M	USD	Annual
Fixed-maturity securities, available-for-sale, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale`	$27.00M	USD	Annual
Fixed-maturity securities, available-for-sale, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale`	-	USD	Annual
Fixed-maturity securities, available-for-sale, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale`	-	USD	Annual
Fixed-maturity securities, trading, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading`	$-549.00M	USD	Annual
Fixed-maturity securities, trading, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading`	$-549.00M	USD	Annual
Fixed-maturity securities, trading, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading`	-	USD	Annual
Fixed-maturity securities, trading, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading`	-	USD	Annual
Fixed-maturity securities, trading, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading`	-	USD	Annual
Fixed-maturity securities, trading, received as salvage	`NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading`	-	USD	Annual
Fixed-maturity securities, trading, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading`	-	USD	Annual
Fixed-maturity securities, trading, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading`	-	USD	Annual
Fixed-maturity securities, trading, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading`	-	USD	Annual
Fixed-maturity securities, trading, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading`	-	USD	Annual
Fixed-maturity securities, trading, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading`	$6.00M	USD	Annual
Fixed-maturity securities, trading, ceded to a reinsurer	`NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading`	$6.00M	USD	Annual
Debt securities of financial guaranty variable interest entities received as salvage	`PaymentsToAcquireDebtSecuritiesFGVIEsNonCash`	-	USD	Annual
Debt securities of financial guaranty variable interest entities received as salvage	`PaymentsToAcquireDebtSecuritiesFGVIEsNonCash`	-	USD	Annual
Debt securities of financial guaranty variable interest entities received as salvage	`PaymentsToAcquireDebtSecuritiesFGVIEsNonCash`	-	USD	Annual
Debt securities of financial guaranty variable interest entities received as salvage	`PaymentsToAcquireDebtSecuritiesFGVIEsNonCash`	-	USD	Annual
Debt securities of financial guaranty variable interest entities received as salvage	`PaymentsToAcquireDebtSecuritiesFGVIEsNonCash`	$-234.00M	USD	Annual
Debt securities of financial guaranty variable interest entities received as salvage	`PaymentsToAcquireDebtSecuritiesFGVIEsNonCash`	$-234.00M	USD	Annual
Contributions from noncontrolling interests	`NoncashContributionsFromNoncontrollingInterests`	-	USD	Annual
Contributions from noncontrolling interests	`NoncashContributionsFromNoncontrollingInterests`	-	USD	Annual
Contributions from noncontrolling interests	`NoncashContributionsFromNoncontrollingInterests`	$20.00M	USD	Annual
Contributions from noncontrolling interests	`NoncashContributionsFromNoncontrollingInterests`	$20.00M	USD	Annual
Contributions from noncontrolling interests	`NoncashContributionsFromNoncontrollingInterests`	$36.00M	USD	Annual
Contributions from noncontrolling interests	`NoncashContributionsFromNoncontrollingInterests`	$36.00M	USD	Annual
Distributions to noncontrolling interests	`NoncashDistributionsToNoncontrollingInterests`	-	USD	Annual
Distributions to noncontrolling interests	`NoncashDistributionsToNoncontrollingInterests`	-	USD	Annual
Distributions to noncontrolling interests	`NoncashDistributionsToNoncontrollingInterests`	$56.00M	USD	Annual
Distributions to noncontrolling interests	`NoncashDistributionsToNoncontrollingInterests`	$56.00M	USD	Annual
Distributions to noncontrolling interests	`NoncashDistributionsToNoncontrollingInterests`	$27.00M	USD	Annual
Distributions to noncontrolling interests	`NoncashDistributionsToNoncontrollingInterests`	$27.00M	USD	Annual
Assets acquired	`DeconsolidationAssetsAcquiredNoncash`	-	USD	Annual
Assets acquired	`DeconsolidationAssetsAcquiredNoncash`	-	USD	Annual
Assets acquired	`DeconsolidationAssetsAcquiredNoncash`	$437.00M	USD	Annual
Assets acquired	`DeconsolidationAssetsAcquiredNoncash`	$437.00M	USD	Annual
Assets acquired	`DeconsolidationAssetsAcquiredNoncash`	-	USD	Annual
Assets acquired	`DeconsolidationAssetsAcquiredNoncash`	-	USD	Annual
Assets transferred	`DeconsolidationAssetsTransferredNoncash`	-	USD	Annual
Assets transferred	`DeconsolidationAssetsTransferredNoncash`	-	USD	Annual
Assets transferred	`DeconsolidationAssetsTransferredNoncash`	-	USD	Annual
Assets transferred	`DeconsolidationAssetsTransferredNoncash`	-	USD	Annual
Assets transferred	`DeconsolidationAssetsTransferredNoncash`	$240.00M	USD	Annual
Assets transferred	`DeconsolidationAssetsTransferredNoncash`	$240.00M	USD	Annual
Liabilities transferred	`DeconsolidationLiabilitiesTransferredNoncash`	-	USD	Annual
Liabilities transferred	`DeconsolidationLiabilitiesTransferredNoncash`	-	USD	Annual
Liabilities transferred	`DeconsolidationLiabilitiesTransferredNoncash`	$66.00M	USD	Annual
Liabilities transferred	`DeconsolidationLiabilitiesTransferredNoncash`	$66.00M	USD	Annual
Liabilities transferred	`DeconsolidationLiabilitiesTransferredNoncash`	-	USD	Annual
Liabilities transferred	`DeconsolidationLiabilitiesTransferredNoncash`	-	USD	Annual
Cash	`Cash`	$97.00M	USD	Point-in-time
Cash	`Cash`	$97.00M	USD	Point-in-time
Cash	`Cash`	$107.00M	USD	Point-in-time
Cash	`Cash`	$107.00M	USD	Point-in-time
Cash	`Cash`	$121.00M	USD	Point-in-time
Cash	`Cash`	$121.00M	USD	Point-in-time
Restricted cash (included in other assets)	`RestrictedCash`	$1.00M	USD	Point-in-time
Restricted cash (included in other assets)	`RestrictedCash`	$1.00M	USD	Point-in-time
Restricted cash (included in other assets)	`RestrictedCash`	$5.00M	USD	Point-in-time
Restricted cash (included in other assets)	`RestrictedCash`	$5.00M	USD	Point-in-time
Restricted cash (included in other assets)	`RestrictedCash`	-	USD	Point-in-time
Restricted cash (included in other assets)	`RestrictedCash`	-	USD	Point-in-time
Cash of financial guaranty variable interest entities	`CashOfFinancialGuarantyVariableInterestEntities`	-	USD	Point-in-time
Cash of financial guaranty variable interest entities	`CashOfFinancialGuarantyVariableInterestEntities`	-	USD	Point-in-time
Cash of financial guaranty variable interest entities	`CashOfFinancialGuarantyVariableInterestEntities`	$154.00M	USD	Point-in-time
Cash of financial guaranty variable interest entities	`CashOfFinancialGuarantyVariableInterestEntities`	$154.00M	USD	Point-in-time
Cash of financial guaranty variable interest entities	`CashOfFinancialGuarantyVariableInterestEntities`	$2.00M	USD	Point-in-time
Cash of financial guaranty variable interest entities	`CashOfFinancialGuarantyVariableInterestEntities`	$2.00M	USD	Point-in-time
Cash and cash equivalents of consolidated vehicles	`CashofConsolidatedInvestmentVehicles`	$2.00M	USD	Point-in-time
Cash and cash equivalents of consolidated vehicles	`CashofConsolidatedInvestmentVehicles`	$2.00M	USD	Point-in-time
Cash and cash equivalents of consolidated vehicles	`CashofConsolidatedInvestmentVehicles`	$35.00M	USD	Point-in-time
Cash and cash equivalents of consolidated vehicles	`CashofConsolidatedInvestmentVehicles`	$35.00M	USD	Point-in-time
Cash and cash equivalents of consolidated vehicles	`CashofConsolidatedInvestmentVehicles`	$97.00M	USD	Point-in-time
Cash and cash equivalents of consolidated vehicles	`CashofConsolidatedInvestmentVehicles`	$97.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$342.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$342.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$286.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$286.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$207.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$207.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$128.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at the end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$128.00M	USD	Point-in-time

Stockholders Equity 66 line items

Line Item	Tag	Value	Unit	Period
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.24	USD	Annual
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.24	USD	Annual
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.00	USD	Annual
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.00	USD	Annual
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.12	USD	Annual
Dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.12	USD	Annual
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.55B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.55B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.48B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.48B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.29B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.29B	USD	Point-in-time
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$138.00M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$138.00M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$392.00M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$392.00M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$761.00M	USD	Annual
Net income	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$761.00M	USD	Annual
Dividends	`DividendsCommonStockCash`	$68.00M	USD	Annual
Dividends	`DividendsCommonStockCash`	$68.00M	USD	Annual
Dividends	`DividendsCommonStockCash`	$64.00M	USD	Annual
Dividends	`DividendsCommonStockCash`	$64.00M	USD	Annual
Dividends	`DividendsCommonStockCash`	$68.00M	USD	Annual
Dividends	`DividendsCommonStockCash`	$68.00M	USD	Annual
Common shares repurchases	`StockRepurchasedAndRetiredDuringPeriodValue`	$503.00M	USD	Annual
Common shares repurchases	`StockRepurchasedAndRetiredDuringPeriodValue`	$503.00M	USD	Annual
Common shares repurchases	`StockRepurchasedAndRetiredDuringPeriodValue`	$508.00M	USD	Annual
Common shares repurchases	`StockRepurchasedAndRetiredDuringPeriodValue`	$508.00M	USD	Annual
Common shares repurchases	`StockRepurchasedAndRetiredDuringPeriodValue`	$199.00M	USD	Annual
Common shares repurchases	`StockRepurchasedAndRetiredDuringPeriodValue`	$199.00M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueSharebasedCompensationandOther`	$21.00M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueSharebasedCompensationandOther`	$21.00M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueSharebasedCompensationandOther`	$8.00M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueSharebasedCompensationandOther`	$8.00M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueSharebasedCompensationandOther`	$30.00M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueSharebasedCompensationandOther`	$30.00M	USD	Annual
Reclassification to liabilities	`MinorityInterestDecreaseFromRedemptions`	$16.00M	USD	Annual
Reclassification to liabilities	`MinorityInterestDecreaseFromRedemptions`	$16.00M	USD	Annual
Contributions	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$89.00M	USD	Annual
Contributions	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$89.00M	USD	Annual
Contributions	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$20.00M	USD	Annual
Contributions	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$20.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$70.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$70.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$61.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$61.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-26.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-26.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-815.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-815.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$156.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$156.00M	USD	Annual
Deconsolidation of investment vehicles	`NoncontrollingInterestDecreaseFromDeconsolidation`	$132.00M	USD	Annual
Deconsolidation of investment vehicles	`NoncontrollingInterestDecreaseFromDeconsolidation`	$132.00M	USD	Annual
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.55B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.55B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.48B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.48B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.29B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.29B	USD	Point-in-time

Comprehensive Income 72 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$761.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$761.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$392.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$392.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$137.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$137.00M	USD	Annual
Investments with no credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax`	$-10.00M	USD	Annual
Investments with no credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax`	$-10.00M	USD	Annual
Investments with no credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax`	$14.00M	USD	Annual
Investments with no credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax`	$14.00M	USD	Annual
Investments with no credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax`	$-121.00M	USD	Annual
Investments with no credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax`	$-121.00M	USD	Annual
Investments with credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax`	$1.00M	USD	Annual
Investments with credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax`	$1.00M	USD	Annual
Investments with credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax`	$-20.00M	USD	Annual
Investments with credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax`	$-20.00M	USD	Annual
Investments with credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax`	$1.00M	USD	Annual
Investments with credit impairment, tax	`OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax`	$1.00M	USD	Annual
Investments with no credit impairment, net of tax provision (benefit) of $(10), $14 and $(121)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax`	$-718.00M	USD	Annual
Investments with no credit impairment, net of tax provision (benefit) of $(10), $14 and $(121)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax`	$-718.00M	USD	Annual
Investments with no credit impairment, net of tax provision (benefit) of $(10), $14 and $(121)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax`	$-33.00M	USD	Annual
Investments with no credit impairment, net of tax provision (benefit) of $(10), $14 and $(121)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax`	$-33.00M	USD	Annual
Investments with no credit impairment, net of tax provision (benefit) of $(10), $14 and $(121)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax`	$141.00M	USD	Annual
Investments with no credit impairment, net of tax provision (benefit) of $(10), $14 and $(121)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax`	$141.00M	USD	Annual
Investments with credit impairment, net of tax provision (benefit) of $1, $1 and $(20)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax`	$5.00M	USD	Annual
Investments with credit impairment, net of tax provision (benefit) of $1, $1 and $(20)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax`	$5.00M	USD	Annual
Investments with credit impairment, net of tax provision (benefit) of $1, $1 and $(20)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax`	$6.00M	USD	Annual
Investments with credit impairment, net of tax provision (benefit) of $1, $1 and $(20)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax`	$6.00M	USD	Annual
Investments with credit impairment, net of tax provision (benefit) of $1, $1 and $(20)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax`	$-86.00M	USD	Annual
Investments with credit impairment, net of tax provision (benefit) of $1, $1 and $(20)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax`	$-86.00M	USD	Annual
Change in net unrealized gains (losses) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$147.00M	USD	Annual
Change in net unrealized gains (losses) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$147.00M	USD	Annual
Change in net unrealized gains (losses) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-28.00M	USD	Annual
Change in net unrealized gains (losses) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-28.00M	USD	Annual
Change in net unrealized gains (losses) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-804.00M	USD	Annual
Change in net unrealized gains (losses) on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-804.00M	USD	Annual
Change in instrument-specific credit risk on financial guaranty variable interest entities liabilities with recourse, net of tax provision (benefit)	`OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment`	$3.00M	USD	Annual
Change in instrument-specific credit risk on financial guaranty variable interest entities liabilities with recourse, net of tax provision (benefit)	`OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment`	$3.00M	USD	Annual
Change in instrument-specific credit risk on financial guaranty variable interest entities liabilities with recourse, net of tax provision (benefit)	`OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment`	$2.00M	USD	Annual
Change in instrument-specific credit risk on financial guaranty variable interest entities liabilities with recourse, net of tax provision (benefit)	`OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment`	$2.00M	USD	Annual
Change in instrument-specific credit risk on financial guaranty variable interest entities liabilities with recourse, net of tax provision (benefit)	`OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment`	$-2.00M	USD	Annual
Change in instrument-specific credit risk on financial guaranty variable interest entities liabilities with recourse, net of tax provision (benefit)	`OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment`	$-2.00M	USD	Annual
Other, net of tax provision (benefit)	`OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent`	$-9.00M	USD	Annual
Other, net of tax provision (benefit)	`OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent`	$-9.00M	USD	Annual
Other, net of tax provision (benefit)	`OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent`	$6.00M	USD	Annual
Other, net of tax provision (benefit)	`OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent`	$6.00M	USD	Annual
Other, net of tax provision (benefit)	`OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent`	-	USD	Annual
Other, net of tax provision (benefit)	`OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent`	-	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$156.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$156.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-815.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-815.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-26.00M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-26.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$917.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$917.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-678.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-678.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$366.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$366.00M	USD	Annual
Less: Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$22.00M	USD	Annual
Less: Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$22.00M	USD	Annual
Less: Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$13.00M	USD	Annual
Less: Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$13.00M	USD	Annual
Less: Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$16.00M	USD	Annual
Less: Comprehensive income (loss) attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$16.00M	USD	Annual
Comprehensive income (loss) attributable to Assured Guaranty Ltd.	`ComprehensiveIncomeNetOfTax`	$-691.00M	USD	Annual
Comprehensive income (loss) attributable to Assured Guaranty Ltd.	`ComprehensiveIncomeNetOfTax`	$-691.00M	USD	Annual
Comprehensive income (loss) attributable to Assured Guaranty Ltd.	`ComprehensiveIncomeNetOfTax`	$895.00M	USD	Annual
Comprehensive income (loss) attributable to Assured Guaranty Ltd.	`ComprehensiveIncomeNetOfTax`	$895.00M	USD	Annual
Comprehensive income (loss) attributable to Assured Guaranty Ltd.	`ComprehensiveIncomeNetOfTax`	$350.00M	USD	Annual
Comprehensive income (loss) attributable to Assured Guaranty Ltd.	`ComprehensiveIncomeNetOfTax`	$350.00M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.