$AGO
ASSURED GUARANTY LTD Stock $ago

$ago Overview Financials Valuation SEC Filings Company Website

2013 Q1 Form 10-Q Financial Statement

#000127381313000027 Filed on May 10, 2013

Income Statement

Concept	2013 Q1	2012 Q1	2010
Revenue	-$176.0M	-$362.0M	$1.313B
YoY Change	-51.38%	-473.2%	36.34%
Cost Of Revenue	-$48.00M	$242.0M	$412.0M
YoY Change	-119.83%	-1030.77%
Gross Profit	-$128.0M	-$604.0M	$901.0M
YoY Change	-78.81%	-591.06%
Gross Profit Margin			68.62%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.000M	$5.000M	$22.00M
YoY Change	-40.0%	66.67%
% of Gross Profit			2.44%
Operating Expenses	$15.00M	$309.0M	$672.0M
YoY Change	-95.15%	655.5%	4.15%
Operating Profit	-$143.0M	-$913.0M	$229.0M
YoY Change	-84.34%	-1212.06%
Interest Expense	$21.00M	$25.00M	$100.0M
YoY Change	-16.0%	0.0%	-259.24%
% of Operating Profit			43.67%
Other Income/Expense, Net
YoY Change
Pretax Income	-$212.0M	-$696.0M	$534.0M
YoY Change	-69.54%	-426.76%	356.8%
Income Tax	-$68.00M	-$213.0M	$50.00M
% Of Pretax Income			9.36%
Net Earnings	-$144.0M	-$483.0M	$484.0M
YoY Change	-70.19%	-447.48%	462.79%
Net Earnings / Revenue			36.86%
Basic Earnings Per Share	-$0.74	-$2.65	$2.63
Diluted Earnings Per Share	-$0.74	-$2.65	$2.56
COMMON SHARES
Basic Shares Outstanding	193.9M shares	182.4M shares	184.0M shares
Diluted Shares Outstanding	193.9M shares	182.4M shares	188.9M shares

Balance Sheet

Concept	2013 Q1	2012 Q1	2010
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets		$50.00M
YoY Change		-68.75%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$10.86B	$11.31B	$10.74B
YoY Change	-3.98%	7.34%	-2.07%
Other Assets	$872.0M	$1.032B	$1.259B
YoY Change	-15.5%	0.0%	8.25%
Total Long-Term Assets		$18.46B
YoY Change		-4.99%
TOTAL ASSETS
Total Short-Term Assets		$50.00M
Total Long-Term Assets		$18.46B
Total Assets	$17.30B	$18.51B	$19.84B
YoY Change	-6.52%	-5.51%	18.25%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities			$93.00M
YoY Change			-39.61%
LONG-TERM LIABILITIES
Long-Term Debt	$832.0M	$1.035B	$1.053B
YoY Change	-19.61%	-1.43%	-1.22%
Other Long-Term Liabilities	$6.036B	$6.290B	$7.141B
YoY Change	-4.04%	-14.61%	126.2%
Total Long-Term Liabilities	$6.868B	$7.325B	$8.194B
YoY Change	-6.24%	-12.96%	94.03%
TOTAL LIABILITIES
Total Short-Term Liabilities			$93.00M
Total Long-Term Liabilities	$6.868B	$7.325B	$8.194B
Total Liabilities	$12.58B	$14.32B	$16.11B
YoY Change	-12.2%	-9.01%	21.39%
SHAREHOLDERS EQUITY
Retained Earnings	$1.586B
YoY Change
Common Stock	$2.687B
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.724B	$4.183B	$3.733B
YoY Change
Total Liabilities & Shareholders Equity	$17.30B	$18.51B	$19.84B
YoY Change	-6.52%	-5.51%	18.25%

Cashflow Statement

Concept	2013 Q1	2012 Q1	2010
OPERATING ACTIVITIES
Net Income	-$144.0M	-$483.0M	$484.0M
YoY Change	-70.19%	-447.48%	462.79%
Depreciation, Depletion And Amortization	$3.000M	$5.000M	$22.00M
YoY Change	-40.0%	66.67%
Cash From Operating Activities	-$14.00M	$75.30M	$129.0M
YoY Change	-118.59%	-161.67%	-53.8%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions			$0.00
YoY Change
Other Investing Activities	-$55.00M	-$53.00M	-$20.00M
YoY Change	3.77%	-113.92%	-98.57%
Cash From Investing Activities	$237.0M	$107.0M	$653.0M
YoY Change	121.5%	-71.9%	-146.74%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$39.00M	$0.00	$10.00M
YoY Change			-99.16%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-233.0M	-217.2M	-717.0M
YoY Change	7.27%	-15.58%	-162.42%
NET CHANGE
Cash From Operating Activities	-14.00M	75.30M	129.0M
Cash From Investing Activities	$237.0M	$107.0M	$653.0M
Cash From Financing Activities	-233.0M	-217.2M	-717.0M
Net Change In Cash	$237.0M	$107.0M	$653.0M
YoY Change	121.5%	7542.86%	2033.99%
FREE CASH FLOW
Cash From Operating Activities	-$14.00M	$75.30M	$129.0M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q1	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	558000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	156000000	USD
CY2013Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	447000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	515000000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2724000000	USD
CY2013Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2685000000	USD
CY2012Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	18700000	shares
CY2013Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	5100000	shares
CY2012Q4	us-gaap	Assets Assets	17242000000	USD
CY2013Q1	us-gaap	Assets Assets	17299000000	USD
CY2013Q1	us-gaap	Assumed Premiums Earned Other Insurance AssumedPremiumsEarnedOtherInsurance	13000000	USD
CY2012Q1	us-gaap	Assumed Premiums Earned Other Insurance AssumedPremiumsEarnedOtherInsurance	14000000	USD
CY2013Q1	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	-2000000	USD
CY2012Q1	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	26000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	459000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	695000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	303000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	137000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	9363000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	9346000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	152000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	153000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	3576000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	3904000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	2328000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	2527000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	1623000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	1700000000	USD
CY2013Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	9985000000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	10056000000	USD
CY2012Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2	68000000	USD
CY2013Q1	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2	61000000	USD
CY2012Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2	98000000	USD
CY2013Q1	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2	91000000	USD
CY2012Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2	30000000	USD
CY2013Q1	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2	30000000	USD
CY2013Q1	us-gaap	Average Term Of Credit Risk Derivatives1 AverageTermOfCreditRiskDerivatives1	P3Y8M12D
CY2012Q4	us-gaap	Average Term Of Credit Risk Derivatives1 AverageTermOfCreditRiskDerivatives1	P3Y8M12D
CY2013Q1	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	36000000	USD
CY2012Q1	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	334000000	USD
CY2013Q1	us-gaap	Cash Cash	125000000	USD
CY2012Q4	us-gaap	Cash Cash	138000000	USD
CY2011Q4	us-gaap	Cash Cash	215000000	USD
CY2012Q1	us-gaap	Cash Cash	182000000	USD
CY2013Q1	us-gaap	Ceded Premiums Earned Financial Guarantee Insurance Contracts CededPremiumsEarnedFinancialGuaranteeInsuranceContracts	32000000	USD
CY2012Q1	us-gaap	Ceded Premiums Earned Financial Guarantee Insurance Contracts CededPremiumsEarnedFinancialGuaranteeInsuranceContracts	26000000	USD
CY2013Q1	us-gaap	Ceded Premiums Written Financial Guarantee Insurance Contracts CededPremiumsWrittenFinancialGuaranteeInsuranceContracts	2000000	USD
CY2012Q1	us-gaap	Ceded Premiums Written Financial Guarantee Insurance Contracts CededPremiumsWrittenFinancialGuaranteeInsuranceContracts	-87000000	USD
CY2013Q1	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	709000000	USD
CY2012Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	660000000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.090
CY2013Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.10
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2013Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2013Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	192337826	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	194003297	shares
CY2013Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	192337826	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	194003297	shares
CY2013Q1	us-gaap	Common Stock Value CommonStockValue	2000000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	2000000	USD
CY2012Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-452000000	USD
CY2013Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-212000000	USD
CY2012Q4	us-gaap	Credit Risk Derivative Assets At Fair Value CreditRiskDerivativeAssetsAtFairValue	141000000	USD
CY2013Q1	us-gaap	Credit Risk Derivative Assets At Fair Value CreditRiskDerivativeAssetsAtFairValue	125000000	USD
CY2012Q4	us-gaap	Credit Risk Derivative Liabilities At Fair Value CreditRiskDerivativeLiabilitiesAtFairValue	1934000000	USD
CY2013Q1	us-gaap	Credit Risk Derivative Liabilities At Fair Value CreditRiskDerivativeLiabilitiesAtFairValue	2518000000	USD
CY2013Q1	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	-2393000000	USD
CY2012Q4	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	-1793000000	USD
CY2013Q1	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	55000000	USD
CY2012Q1	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	29000000	USD
CY2013Q1	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1135000000	USD
CY2012Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1141000000	USD
CY2013Q1	us-gaap	Deferred Compensation Equity DeferredCompensationEquity	-4000000	USD
CY2012Q4	us-gaap	Deferred Compensation Equity DeferredCompensationEquity	-4000000	USD
CY2013Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-123000000	USD
CY2012Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-242000000	USD
CY2013Q1	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	3000000	USD
CY2012Q1	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	5000000	USD
CY2013Q1	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	116000000	USD
CY2012Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	116000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	721000000	USD
CY2013Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	872000000	USD
CY2013Q1	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	169000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	198000000	USD
CY2013Q1	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities	1903000000	USD
CY2012Q4	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities	3016000000	USD
CY2013Q1	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-592000000	USD
CY2012Q1	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-691000000	USD
CY2012Q1	us-gaap	Direct Premiums Earned Financial Guarantee Insurance Contracts DirectPremiumsEarnedFinancialGuaranteeInsuranceContracts	206000000	USD
CY2013Q1	us-gaap	Direct Premiums Earned Financial Guarantee Insurance Contracts DirectPremiumsEarnedFinancialGuaranteeInsuranceContracts	267000000	USD
CY2012Q1	us-gaap	Direct Premiums Written Financial Guarantee Insurance Contracts DirectPremiumsWrittenFinancialGuaranteeInsuranceContracts	62000000	USD
CY2013Q1	us-gaap	Direct Premiums Written Financial Guarantee Insurance Contracts DirectPremiumsWrittenFinancialGuaranteeInsuranceContracts	19000000	USD
CY2013Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	19000000	USD
CY2013Q1	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	0	USD
CY2012Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	0	USD
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.65
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.74
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.74
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.65
CY2012Q1	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations	2000000	USD
CY2013Q1	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations	-3000000	USD
CY2012Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.306
CY2013Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.318
CY2012Q1	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable Premium Payments Received FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumPaymentsReceived	86000000	USD
CY2013Q1	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable Premium Payments Received FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumPaymentsReceived	53000000	USD
CY2013Q1	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Change In Period Of Contract FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentChangeInPeriodOfContract	1000000	USD
CY2012Q1	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Change In Period Of Contract FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentChangeInPeriodOfContract	33000000	USD
CY2012Q1	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable New Business Written FinancialGuaranteeInsuranceContractsPremiumsReceivableNewBusinessWritten	56000000	USD
CY2013Q1	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable New Business Written FinancialGuaranteeInsuranceContractsPremiumsReceivableNewBusinessWritten	17000000	USD
CY2013Q1	us-gaap	Financial Guarantee Insurance Contracts Risk Management Activities Mitigating Claim Liabilities Accrued Liabilities FinancialGuaranteeInsuranceContractsRiskManagementActivitiesMitigatingClaimLiabilitiesAccruedLiabilities	31000000	USD
CY2012Q4	us-gaap	Financial Guarantee Insurance Contracts Risk Management Activities Mitigating Claim Liabilities Accrued Liabilities FinancialGuaranteeInsuranceContractsRiskManagementActivitiesMitigatingClaimLiabilitiesAccruedLiabilities	39000000	USD
CY2012Q1	us-gaap	Financial Guarantee Insurance Contracts Risk Management Activities Mitigating Claim Liabilities Expense FinancialGuaranteeInsuranceContractsRiskManagementActivitiesMitigatingClaimLiabilitiesExpense	9000000	USD
CY2013Q1	us-gaap	Financial Guarantee Insurance Contracts Risk Management Activities Mitigating Claim Liabilities Expense FinancialGuaranteeInsuranceContractsRiskManagementActivitiesMitigatingClaimLiabilitiesExpense	13000000	USD
CY2012Q1	us-gaap	Gains Losses On Sales Of Other Assets GainsLossesOnSalesOfOtherAssets	6000000	USD
CY2013Q1	us-gaap	Gains Losses On Sales Of Other Assets GainsLossesOnSalesOfOtherAssets	33000000	USD
CY2012Q1	us-gaap	Impairment Of Investments ImpairmentOfInvestments	5000000	USD
CY2013Q1	us-gaap	Impairment Of Investments ImpairmentOfInvestments	5000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-696000000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-212000000	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-68000000	USD
CY2012Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-213000000	USD
CY2012Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1000000	USD
CY2013Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2000000	USD
CY2012Q1	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	15000000	USD
CY2013Q1	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	14000000	USD
CY2013Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	32000000	USD
CY2012Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2000000	USD
CY2012Q1	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	0	shares
CY2013Q1	us-gaap	Incremental Common Shares Attributable To Equity Unit Purchase Agreements IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements	0	shares
CY2013Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2012Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2012Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	100000000	USD
CY2013Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	96000000	USD
CY2013Q1	us-gaap	Interest Expense InterestExpense	21000000	USD
CY2012Q1	us-gaap	Interest Expense InterestExpense	25000000	USD
CY2012Q1	us-gaap	Interest Paid Net InterestPaidNet	12000000	USD
CY2013Q1	us-gaap	Interest Paid Net InterestPaidNet	9000000	USD
CY2013Q1	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	2000000	USD
CY2012Q1	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	2000000	USD
CY2013Q1	us-gaap	Investments Investments	10862000000	USD
CY2012Q4	us-gaap	Investments Investments	11085000000	USD
CY2013Q1	us-gaap	Investments And Cash InvestmentsAndCash	10987000000	USD
CY2012Q4	us-gaap	Investments And Cash InvestmentsAndCash	11223000000	USD
CY2013Q1	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	10714000000	USD
CY2012Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	10873000000	USD
CY2013Q1	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2013Q1	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2900000	USD
CY2013Q1	us-gaap	Liabilities Liabilities	12575000000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	12248000000	USD
CY2013Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	17299000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	17242000000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	836000000	USD
CY2013Q1	us-gaap	Long Term Debt LongTermDebt	832000000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-33000000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-13000000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-217000000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-233000000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	107000000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	237000000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	107000000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	237000000	USD
CY2012Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	75000000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-14000000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-483000000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-144000000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-144000000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-483000000	USD
CY2013Q1	us-gaap	Net Investment Income NetInvestmentIncome	94000000	USD
CY2012Q1	us-gaap	Net Investment Income NetInvestmentIncome	98000000	USD
CY2013Q1	us-gaap	Other Assets OtherAssets	296000000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	273000000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	29000000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-63000000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-68000000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	31000000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	3000000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	1000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax		USD
CY2012Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	-1000000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	-2000000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-66000000	USD
CY2012Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	28000000	USD
CY2012Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	62000000	USD
CY2013Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	60000000	USD
CY2012Q1	us-gaap	Other Income OtherIncome	91000000	USD
CY2013Q1	us-gaap	Other Income OtherIncome	-14000000	USD
CY2013Q1	us-gaap	Other Investments OtherInvestments	148000000	USD
CY2012Q4	us-gaap	Other Investments OtherInvestments	212000000	USD
CY2013Q1	us-gaap	Other Liabilities OtherLiabilities	340000000	USD
CY2012Q4	us-gaap	Other Liabilities OtherLiabilities	310000000	USD
CY2013Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	4000000	USD
CY2012Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	2000000	USD
CY2013Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	1000000	USD
CY2012Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	2000000	USD
CY2012Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	64000000	USD
CY2012Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	51000000	USD
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	47000000	USD
CY2013Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	69000000	USD
CY2012Q1	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	28000000	USD
CY2013Q1	us-gaap	Other Than Temporary Impairment Losses Investments Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities	1000000	USD
CY2013Q1	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	4000000	USD
CY2012Q1	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	-23000000	USD
CY2012Q1	us-gaap	Participating Securities Distributed And Undistributed Earnings ParticipatingSecuritiesDistributedAndUndistributedEarnings	0	USD
CY2013Q1	us-gaap	Participating Securities Distributed And Undistributed Earnings ParticipatingSecuritiesDistributedAndUndistributedEarnings	0	USD
CY2013Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-55000000	USD
CY2012Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-53000000	USD
CY2013Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	39000000	USD
CY2012Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2012Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	16000000	USD
CY2013Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19000000	USD
CY2012Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	383000000	USD
CY2013Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	510000000	USD
CY2012Q1	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	304000000	USD
CY2013Q1	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	-27000000	USD
CY2012Q1	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	242000000	USD
CY2013Q1	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	-48000000	USD
CY2013Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	248000000	USD
CY2012Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	194000000	USD
CY2013Q1	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	956000000	USD
CY2012Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1005000000	USD
CY2012Q1	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1019000000	USD
CY2011Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	1003000000	USD
CY2012Q1	us-gaap	Premiums Written Net PremiumsWrittenNet	175000000	USD
CY2013Q1	us-gaap	Premiums Written Net PremiumsWrittenNet	15000000	USD
CY2013Q1	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	535000000	USD
CY2012Q4	us-gaap	Prepaid Reinsurance Premiums PrepaidReinsurancePremiums	561000000	USD
CY2013Q1	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	0	USD
CY2013Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	283000000	USD
CY2012Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	253000000	USD
CY2012Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	189000000	USD
CY2013Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	183000000	USD
CY2012Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1000000	USD
CY2013Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	28000000	USD
CY2012Q1	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	17000000	USD
CY2013Q1	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	-14000000	USD
CY2013Q1	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	7000000	USD
CY2012Q1	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	79000000	USD
CY2012Q4	us-gaap	Reinsurance Payable ReinsurancePayable	219000000	USD
CY2013Q1	us-gaap	Reinsurance Payable ReinsurancePayable	193000000	USD
CY2013Q1	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty	0	USD
CY2012Q4	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty	0	USD
CY2012Q1	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	5000000	USD
CY2013Q1	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	6000000	USD
CY2013Q1	us-gaap	Reserve For Losses And Loss Adjustment Expenses ReserveForLossesAndLossAdjustmentExpenses	532000000	USD
CY2012Q4	us-gaap	Reserve For Losses And Loss Adjustment Expenses ReserveForLossesAndLossAdjustmentExpenses	601000000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1749000000	USD
CY2013Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1586000000	USD
CY2013Q1	us-gaap	Revenues Revenues	-176000000	USD
CY2012Q1	us-gaap	Revenues Revenues	-362000000	USD
CY2012Q4	us-gaap	Short Term Investments ShortTermInvestments	817000000	USD
CY2013Q1	us-gaap	Short Term Investments ShortTermInvestments	729000000	USD
CY2013Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	39000000	USD
CY2013Q1	us-gaap	Stockholders Equity StockholdersEquity	4724000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	4994000000	USD
CY2013Q1	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	0	USD
CY2012Q1	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	0	USD
CY2012Q4	us-gaap	Unearned Premiums UnearnedPremiums	5207000000	USD
CY2013Q1	us-gaap	Unearned Premiums UnearnedPremiums	4982000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	22000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20000000	USD
CY2013Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14000000	USD
CY2013Q1	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	9000000	USD
CY2013Q1	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	3000000	USD
CY2013Q1	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	2000000	USD
CY2013Q1	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-8000000	USD
CY2012Q1	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
CY2013Q1	us-gaap	Variable Interest Entity Activity Between Vie And Entity Expense VariableInterestEntityActivityBetweenVIEAndEntityExpense	7000000	USD
CY2012Q1	us-gaap	Variable Interest Entity Activity Between Vie And Entity Expense VariableInterestEntityActivityBetweenVIEAndEntityExpense	-8000000	USD
CY2012Q1	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	-52000000	USD
CY2013Q1	us-gaap	Variable Interest Entity Activity Between Vie And Entity Income Or Loss Before Tax VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax	43000000	USD
CY2013Q1	us-gaap	Variable Interest Entity Activity Between Vie And Entity Revenues VariableInterestEntityActivityBetweenVIEAndEntityRevenues	-18000000	USD
CY2012Q1	us-gaap	Variable Interest Entity Activity Between Vie And Entity Revenues VariableInterestEntityActivityBetweenVIEAndEntityRevenues	-17000000	USD
CY2013Q1	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	2813000000	USD
CY2012Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	2688000000	USD
CY2012Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Liabilities VariableInterestEntityConsolidatedCarryingAmountLiabilities	3141000000	USD
CY2013Q1	us-gaap	Variable Interest Entity Consolidated Carrying Amount Liabilities VariableInterestEntityConsolidatedCarryingAmountLiabilities	3178000000	USD
CY2013Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	193900000	shares
CY2012Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	182400000	shares
CY2013Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	193900000	shares
CY2012Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	182400000	shares
CY2013Q1	ago	Accumulated Other Comprehensive Income Loss Gain Loss On Investments Including Other Than Temporary Impairments AccumulatedOtherComprehensiveIncomeLossGainLossOnInvestmentsIncludingOtherThanTemporaryImpairments	-25000000	USD
CY2012Q4	ago	Accumulated Other Comprehensive Income Loss Gain Loss On Investments Including Other Than Temporary Impairments AccumulatedOtherComprehensiveIncomeLossGainLossOnInvestmentsIncludingOtherThanTemporaryImpairments	-7000000	USD
CY2013Q1	ago	Amount Of Liabilities Agreed Paid By Entities Providing R And Ws For Transactions Company Provided Financial Guaranty AmountOfLiabilitiesAgreedPaidByEntitiesProvidingRAndWsForTransactionsCompanyProvidedFinancialGuaranty	3400000000	USD
CY2013Q1	ago	Amount Of Liabilities Agreed Paid Directly To Company By Entities Providing R And Ws For Transactions Company Provided Financial Guaranty AmountOfLiabilitiesAgreedPaidDirectlyToCompanyByEntitiesProvidingRAndWsForTransactionsCompanyProvidedFinancialGuaranty	2800000000	USD
CY2013Q1	ago	Amount Of Liabilities Agreed Paid Into Relevant Rmbs Financial Guaranty Transactions Entities Providing R And Ws To Company For Financial Guaranty Transactions AmountOfLiabilitiesAgreedPaidIntoRelevantRmbsFinancialGuarantyTransactionsEntitiesProvidingRAndWsToCompanyForFinancialGuarantyTransactions	562000000	USD
CY2013Q1	ago	Assumed Expected Loss And Loss Adjustment Expense Payable AssumedExpectedLossAndLossAdjustmentExpensePayable	104000000	USD
CY2013Q1	ago	Assumed Par Amount AssumedParAmount	36761000000	USD
CY2013Q1	ago	Assumed Premium Receivable AssumedPremiumReceivable	81000000	USD
CY2013Q1	ago	Available For Sale Securities Continuous Unrealized Loss Position Greater Than10 Percent Of Book Value Twelve Months Or Longer Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber	8	Security
CY2012Q4	ago	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsNumber	58	Security
CY2013Q1	ago	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsNumber	105	Security
CY2012Q4	ago	Available For Sale Securities Continuous Unrealized Loss Position Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionNumber	74	Security
CY2013Q1	ago	Available For Sale Securities Continuous Unrealized Loss Position Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionNumber	117	Security
CY2013Q1	ago	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Greater Than10 Percent Book Value Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses	60000000	USD
CY2012Q4	ago	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerNumber	16	Security
CY2013Q1	ago	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerNumber	12	Security
CY2012Q4	ago	Available For Sale Securities With Otti Continuous Unrealized Loss Position Less Than12 Months Number AvailableForSaleSecuritiesWithOttiContinuousUnrealizedLossPositionLessThan12MonthsNumber	5	Security
CY2013Q1	ago	Available For Sale Securities With Otti Continuous Unrealized Loss Position Less Than12 Months Number AvailableForSaleSecuritiesWithOttiContinuousUnrealizedLossPositionLessThan12MonthsNumber	5	Security
CY2012Q4	ago	Available For Sale Securities With Otti Continuous Unrealized Loss Position Number AvailableForSaleSecuritiesWithOttiContinuousUnrealizedLossPositionNumber	11	Security
CY2013Q1	ago	Available For Sale Securities With Otti Continuous Unrealized Loss Position Number AvailableForSaleSecuritiesWithOttiContinuousUnrealizedLossPositionNumber	10	Security
CY2012Q4	ago	Available For Sale Securities With Otti Continuous Unrealized Loss Position Twelve Months Or Longer Number AvailableForSaleSecuritiesWithOttiContinuousUnrealizedLossPositionTwelveMonthsOrLongerNumber	6	Security
CY2013Q1	ago	Available For Sale Securities With Otti Continuous Unrealized Loss Position Twelve Months Or Longer Number AvailableForSaleSecuritiesWithOttiContinuousUnrealizedLossPositionTwelveMonthsOrLongerNumber	5	Security
CY2012Q4	ago	Breached Representations And Warranties Number Of Policies BreachedRepresentationsAndWarrantiesNumberOfPolicies	53	risk
CY2013Q1	ago	Breached Representations And Warranties Number Of Policies BreachedRepresentationsAndWarrantiesNumberOfPolicies	55	risk
CY2013Q1	ago	Cash Amount Already Received For Liabilities Agreed Paid By Entities Providing R And Ws For Transactions Company Provided Financial Guaranty CashAmountAlreadyReceivedForLiabilitiesAgreedPaidByEntitiesProvidingRAndWsForTransactionsCompanyProvidedFinancialGuaranty	2100000000	USD
CY2013Q1	ago	Cash Expected To Be Received From Liabilities Agreed Paid By Entities Providing R And Ws For Transactions Company Provided Financial Guaranty CashExpectedToBeReceivedFromLiabilitiesAgreedPaidByEntitiesProvidingRAndWsForTransactionsCompanyProvidedFinancialGuaranty	716000000	USD
CY2013Q1	ago	Ceded Expected Loss And Loss Adjustment Expense CededExpectedLossAndLossAdjustmentExpense	46000000	USD
CY2013Q1	ago	Ceded Par Amount CededParAmount	30929000000	USD
CY2013Q1	ago	Ceded Par Amount Credit Derivatives CededParAmountCreditDerivatives	3720000000	USD
CY2013Q1	ago	Ceded Premium Payable CededPremiumPayable	145000000	USD
CY2013Q1	ago	Ceded Salvage And Subrogation Recoveries Value CededSalvageAndSubrogationRecoveriesValue	50000000	USD
CY2012Q4	ago	Ceded Salvage And Subrogation Recoveries Value CededSalvageAndSubrogationRecoveriesValue	46000000	USD
CY2013Q1	ago	Collateral Agreed To Be Posted Aggregate Fair Value CollateralAgreedToBePostedAggregateFairValue	709000000	USD
CY2013Q1	ago	Constant Discount Rate ConstantDiscountRate	0.05
CY2013Q1	ago	Credit Derivative Ceding Commissions CreditDerivativeCedingCommissions	1000000	USD
CY2012Q1	ago	Credit Derivative Ceding Commissions CreditDerivativeCedingCommissions	0	USD
CY2013Q1	ago	Credit Derivative Collateral Posted Based In Mtm Valuation CreditDerivativeCollateralPostedBasedInMtmValuation	64000000	USD
CY2012Q4	ago	Credit Derivative Current Subordination CreditDerivativeCurrentSubordination	0.000
CY2013Q1	ago	Credit Derivative Current Subordination CreditDerivativeCurrentSubordination	0.000
CY2013Q1	ago	Credit Derivative Gain Loss Due To Change In Spreads CreditDerivativeGainLossDueToChangeInSpreads	513000000	USD
CY2013Q1	ago	Credit Derivative Losses CreditDerivativeLosses	10000000	USD
CY2012Q1	ago	Credit Derivative Losses CreditDerivativeLosses	86000000	USD
CY2013Q1	ago	Credit Derivative Maximum Collateral Amount CreditDerivativeMaximumCollateralAmount	11900000000	USD
CY2013Q1	ago	Credit Derivative Notional Amount Subject To Collateral CreditDerivativeNotionalAmountSubjectToCollateral	12300000000	USD
CY2013Q1	ago	Credit Derivative Notional Amount Subject To Collateral At Capped Amount CreditDerivativeNotionalAmountSubjectToCollateralAtCappedAmount	675000000	USD
CY2013Q1	ago	Credit Derivative Notional Amount Subjest To Collateral Based In Mtm Valuation CreditDerivativeNotionalAmountSubjestToCollateralBasedInMtmValuation	400000000	USD
CY2013Q1	ago	Credit Derivative Original Subordination CreditDerivativeOriginalSubordination	0.000
CY2013Q1	ago	Credit Derivative Percentage Of Each Category To Total Principal Amount CreditDerivativePercentageOfEachCategoryToTotalPrincipalAmount	1.000
CY2012Q4	ago	Credit Derivative Percentage Of Each Category To Total Principal Amount CreditDerivativePercentageOfEachCategoryToTotalPrincipalAmount	1.000
CY2012Q1	ago	Credit Derivative Premiums CreditDerivativePremiums	29000000	USD
CY2013Q1	ago	Credit Derivative Premiums CreditDerivativePremiums	27000000	USD
CY2012Q1	ago	Credit Derivative Realized Gains CreditDerivativeRealizedGains	29000000	USD
CY2013Q1	ago	Credit Derivative Realized Gains CreditDerivativeRealizedGains	28000000	USD
CY2013Q1	ago	Credit Derivative Terminated Amount If Ratings Downgraded CreditDerivativeTerminatedAmountIfRatingsDowngraded	2000000000	USD
CY2013Q1	ago	Credit Derivatives Minimum Number Of Events Triggering Guaranty Obligation CreditDerivativesMinimumNumberOfEventsTriggeringGuarantyObligation	1	Security
CY2013Q1	ago	Credit Derivatives Minimum Number Of Third Party Referenced Securities Or Loans CreditDerivativesMinimumNumberOfThirdPartyReferencedSecuritiesOrLoans	1	Security
CY2013Q1	ago	Credit Risk Derivatives At Fair Value Before Effect Of Credit Spread Net CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet	-4296000000	USD
CY2012Q4	ago	Credit Risk Derivatives At Fair Value Before Effect Of Credit Spread Net CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet	-4809000000	USD
CY2013Q1	ago	Deferred Compensation Equity Share DeferredCompensationEquityShare	320193	shares
CY2012Q4	ago	Deferred Compensation Equity Share DeferredCompensationEquityShare	320193	shares
CY2013Q1	ago	Deferred Tax Assets Realization Assessment Period For Which Cumulative Operating Income Considered DeferredTaxAssetsRealizationAssessmentPeriodForWhichCumulativeOperatingIncomeConsidered	P3Y
CY2013Q1	ago	Equity In Earnings Of Subsidiaries EquityInEarningsOfSubsidiaries	0	USD
CY2012Q1	ago	Equity In Earnings Of Subsidiaries EquityInEarningsOfSubsidiaries	0	USD
CY2013Q1	ago	Estimated Benefit From Loan Repurchases Related To Breaches Of R And W Included In Net Expected Loss Estimates EstimatedBenefitFromLoanRepurchasesRelatedToBreachesOfRAndWIncludedInNetExpectedLossEstimates	1400000000	USD
CY2013Q1	ago	Estimated Benefit From Loan Repurchases Related To Breaches Of R And W Included In Net Expected Loss Estimates In Pursuit EstimatedBenefitFromLoanRepurchasesRelatedToBreachesOfRAndWIncludedInNetExpectedLossEstimatesInPursuit	401000000	USD
CY2013Q1	ago	Estimated Benefit From Loan Repurchases Related To Breaches Of R And W Included In Net Expected Loss Estimates Under Agreements EstimatedBenefitFromLoanRepurchasesRelatedToBreachesOfRAndWIncludedInNetExpectedLossEstimatesUnderAgreements	1037000000	USD
CY2013Q1	ago	Estimated Benefit From Loan Repurchases Related To Breaches Of R And W Included In Net Expected Loss Estimates Under Agreements Other EstimatedBenefitFromLoanRepurchasesRelatedToBreachesOfRAndWIncludedInNetExpectedLossEstimatesUnderAgreementsOther	51000000	USD
CY2012Q1	ago	Expected Future Recoveries For Breached Representations And Warranties Development And Accretion Of Discount ExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesDevelopmentAndAccretionOfDiscount	51000000	USD
CY2013Q1	ago	Expected Future Recoveries For Breached Representations And Warranties Development And Accretion Of Discount ExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesDevelopmentAndAccretionOfDiscount	157000000	USD
CY2013Q1	ago	Fair Value Gain Loss On Committed Capital Securities FairValueGainLossOnCommittedCapitalSecurities	-10000000	USD
CY2012Q1	ago	Fair Value Gain Loss On Committed Capital Securities FairValueGainLossOnCommittedCapitalSecurities	-14000000	USD
CY2012Q4	ago	Fair Value Of Securities Held Under State Licensing Requirements FairValueOfSecuritiesHeldUnderStateLicensingRequirements	27000000	USD
CY2013Q1	ago	Fair Value Of Securities Held Under State Licensing Requirements FairValueOfSecuritiesHeldUnderStateLicensingRequirements	24000000	USD
CY2013Q1	ago	Financial Guaranty Contracts Accounted For As Credit Derivatives Outstanding Principal Amount FinancialGuarantyContractsAccountedForAsCreditDerivativesOutstandingPrincipalAmount	65900000000	USD
CY2012Q4	ago	Financial Guaranty Contracts Accounted For As Credit Derivatives Outstanding Principal Amount FinancialGuarantyContractsAccountedForAsCreditDerivativesOutstandingPrincipalAmount	70781000000	USD
CY2012Q1	ago	Financial Guaranty Contracts Accounted For As Credit Derivatives Principal Amount Terminated FinancialGuarantyContractsAccountedForAsCreditDerivativesPrincipalAmountTerminated	200000000	USD
CY2013Q1	ago	Financial Guaranty Contracts Accounted For As Credit Derivatives Principal Amount Terminated FinancialGuarantyContractsAccountedForAsCreditDerivativesPrincipalAmountTerminated	1000000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Ceded Prepaid Losses Related To Variable Interest Entities FinancialGuarantyInsuranceContractsCededPrepaidLossesRelatedToVariableInterestEntities	72000000	USD
CY2012Q4	ago	Financial Guaranty Insurance Contracts Ceded Prepaid Losses Related To Variable Interest Entities FinancialGuarantyInsuranceContractsCededPrepaidLossesRelatedToVariableInterestEntities	98000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Accretion Of Discount On Balance FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesAccretionOfDiscountOnBalance	3000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Accretion Of Discount On Balance FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesAccretionOfDiscountOnBalance	5000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Amount Of New Transactions FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesAmountOfNewTransactions	0	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Amount Of New Transactions FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesAmountOfNewTransactions	0	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Change In Recovery Assumptions FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesChangeInRecoveryAssumptions	11000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Change In Recovery Assumptions FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesChangeInRecoveryAssumptions	80000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Estimated Increase In Defaults Causing Additional Breaches FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesEstimatedIncreaseInDefaultsCausingAdditionalBreaches	1000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Estimated Increase In Defaults Causing Additional Breaches FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesEstimatedIncreaseInDefaultsCausingAdditionalBreaches	-82000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Increase Due To Negotiated Agreements FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesIncreaseDueToNegotiatedAgreements	48000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Expected Future Recoveries For Breached Representations And Warranties Increase Due To Negotiated Agreements FinancialGuarantyInsuranceContractsExpectedFutureRecoveriesForBreachedRepresentationsAndWarrantiesIncreaseDueToNegotiatedAgreements	142000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed Beyond Twentieth Fiscal Year FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedBeyondTwentiethFiscalYear	19000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed Discount Amount FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedDiscountAmount	333000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed For Consolidating Vies FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedForConsolidatingVies	130000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed In Fifth Full Fiscal Year FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedInFifthFullFiscalYear	34000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed In Fourth Full Fiscal Year FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedInFourthFullFiscalYear	37000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed In Second Full Fiscal Year FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedInSecondFullFiscalYear	50000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed In Third Full Fiscal Year FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedInThirdFullFiscalYear	43000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed More Than10 And Within15 Years From Balance Sheet Date FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan10AndWithin15YearsFromBalanceSheetDate	60000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed More Than15 And Within20 Years From Balance Sheet Date FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThan15AndWithin20YearsFromBalanceSheetDate	28000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Future Expected Net Loss To Be Expensed More Than Five And Within10 Years From Balance Sheet Date FinancialGuarantyInsuranceContractsFutureExpectedNetLossToBeExpensedMoreThanFiveAndWithin10YearsFromBalanceSheetDate	122000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Installment Premium Receivable Percentage Foreign Denominated FinancialGuarantyInsuranceContractsInstallmentPremiumReceivablePercentageForeignDenominated	0.46
CY2012Q4	ago	Financial Guaranty Insurance Contracts Installment Premium Receivable Percentage Foreign Denominated FinancialGuarantyInsuranceContractsInstallmentPremiumReceivablePercentageForeignDenominated	0.47
CY2013Q1	ago	Financial Guaranty Insurance Contracts Net Premiums Receivable Adjustment Accretion Of Discount On Net Premium Receivable FinancialGuarantyInsuranceContractsNetPremiumsReceivableAdjustmentAccretionOfDiscountOnNetPremiumReceivable	9000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Net Premiums Receivable Adjustment Accretion Of Discount On Net Premium Receivable FinancialGuarantyInsuranceContractsNetPremiumsReceivableAdjustmentAccretionOfDiscountOnNetPremiumReceivable	6000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Premiums Receivable Adjustment Consolidation Of Variable Interest Entities FinancialGuarantyInsuranceContractsPremiumsReceivableAdjustmentConsolidationOfVariableInterestEntities	0	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Premiums Receivable Adjustment Consolidation Of Variable Interest Entities FinancialGuarantyInsuranceContractsPremiumsReceivableAdjustmentConsolidationOfVariableInterestEntities	-5000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Premiums Receivable Adjustment Foreign Exchange Translation FinancialGuarantyInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation	-23000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Premiums Receivable Adjustment Foreign Exchange Translation FinancialGuarantyInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation	12000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Prepaid Reinsurance Premiums FinancialGuarantyInsuranceContractsPrepaidReinsurancePremiums	558000000	USD
CY2012Q4	ago	Financial Guaranty Insurance Contracts Prepaid Reinsurance Premiums FinancialGuarantyInsuranceContractsPrepaidReinsurancePremiums	586000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Recoveries For Breached Representations And Warranties Gross FinancialGuarantyInsuranceContractsRecoveriesForBreachedRepresentationsAndWarrantiesGross	92000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Recoveries For Breached Representations And Warranties Gross FinancialGuarantyInsuranceContractsRecoveriesForBreachedRepresentationsAndWarrantiesGross	77000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Total Recoveries Under Negotiated Agreement FinancialGuarantyInsuranceContractsTotalRecoveriesUnderNegotiatedAgreement	1700000000	USD
CY2012Q4	ago	Financial Guaranty Insurance Contracts Unearned Premium Revenue FinancialGuarantyInsuranceContractsUnearnedPremiumRevenue	5356000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Unearned Premium Revenue FinancialGuarantyInsuranceContractsUnearnedPremiumRevenue	5097000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Unearned Premium Revenue Net FinancialGuarantyInsuranceContractsUnearnedPremiumRevenueNet	4539000000	USD
CY2012Q4	ago	Financial Guaranty Insurance Contracts Unearned Premium Revenue Net FinancialGuarantyInsuranceContractsUnearnedPremiumRevenueNet	4770000000	USD
CY2011Q4	ago	Financial Guaranty Insurance Contracts Unearned Premium Revenue Net FinancialGuarantyInsuranceContractsUnearnedPremiumRevenueNet	5327000000	USD
CY2012Q1	ago	Financial Guaranty Insurance Contracts Unearned Premium Revenue Net FinancialGuarantyInsuranceContractsUnearnedPremiumRevenueNet	5279000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Variable Interest Entity Consolidated Outstanding Principal Amount Gross FinancialGuarantyInsuranceContractsVariableInterestEntityConsolidatedOutstandingPrincipalAmountGross	2707000000	USD
CY2012Q4	ago	Financial Guaranty Insurance Contracts Variable Interest Entity Consolidated Outstanding Principal Amount Gross FinancialGuarantyInsuranceContractsVariableInterestEntityConsolidatedOutstandingPrincipalAmountGross	2808000000	USD
CY2013Q1	ago	Financial Guaranty Insurance Contracts Variable Interest Entity Consolidated Outstanding Principal Amount Gross Maturing In First Full Fiscal Year FinancialGuarantyInsuranceContractsVariableInterestEntityConsolidatedOutstandingPrincipalAmountGrossMaturingInFirstFullFiscalYear	17000000	USD
CY2013Q1	ago	Financial Guaranty Variable Interest Assets With Recourse FinancialGuarantyVariableInterestAssetsWithRecourse	1672000000	USD
CY2012Q4	ago	Financial Guaranty Variable Interest Assets With Recourse FinancialGuarantyVariableInterestAssetsWithRecourse	1601000000	USD
CY2013Q1	ago	Financial Guaranty Variable Interest Assets Without Recourse FinancialGuarantyVariableInterestAssetsWithoutRecourse	1141000000	USD
CY2012Q4	ago	Financial Guaranty Variable Interest Assets Without Recourse FinancialGuarantyVariableInterestAssetsWithoutRecourse	1087000000	USD
CY2012Q4	ago	Financial Guaranty Variable Interest Liabilities With Recourse FinancialGuarantyVariableInterestLiabilitiesWithRecourse	2090000000	USD
CY2013Q1	ago	Financial Guaranty Variable Interest Liabilities With Recourse FinancialGuarantyVariableInterestLiabilitiesWithRecourse	2071000000	USD
CY2013Q1	ago	Financial Guaranty Variable Interest Liabilities Without Recourse FinancialGuarantyVariableInterestLiabilitiesWithoutRecourse	1107000000	USD
CY2012Q4	ago	Financial Guaranty Variable Interest Liabilities Without Recourse FinancialGuarantyVariableInterestLiabilitiesWithoutRecourse	1051000000	USD
CY2013Q1	ago	Fixed Maturity Investment Held In Segregated Account As Collateral For Letter Of Credit Percent Value Of Letter Of Credit FixedMaturityInvestmentHeldInSegregatedAccountAsCollateralForLetterOfCreditPercentValueOfLetterOfCredit	1.2
CY2012Q4	ago	Fixed Maturity Investments In Segregated Portfolio FixedMaturityInvestmentsInSegregatedPortfolio	3500000	USD
CY2013Q1	ago	Fixed Maturity Investments In Segregated Portfolio FixedMaturityInvestmentsInSegregatedPortfolio	3500000	USD
CY2012Q4	ago	Fixed Maturity Securities Held For Benefit Of Reinsured Companies FixedMaturitySecuritiesHeldForBenefitOfReinsuredCompanies	368000000	USD
CY2013Q1	ago	Fixed Maturity Securities Held For Benefit Of Reinsured Companies FixedMaturitySecuritiesHeldForBenefitOfReinsuredCompanies	371000000	USD
CY2013Q1	ago	Fixed Maturity Securities Valued Using Model Processes As Percentage Of Fixed Income Securities And Short Term Investments FixedMaturitySecuritiesValuedUsingModelProcessesAsPercentageOfFixedIncomeSecuritiesAndShortTermInvestments	0.051
CY2012Q1	ago	Gain Loss From Commutations GainLossFromCommutations	83000000	USD
CY2012Q4	ago	Government Agency Obligations As Percentage Of Total Mortgage Backed Securities GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities	0.61
CY2013Q1	ago	Government Agency Obligations As Percentage Of Total Mortgage Backed Securities GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities	0.60
CY2012Q1	ago	Income Tax Reconciliation Income Tax Expense Benefit At Statutory Income Tax Rates IncomeTaxReconciliationIncomeTaxExpenseBenefitAtStatutoryIncomeTaxRates	-199000000	USD
CY2013Q1	ago	Income Tax Reconciliation Income Tax Expense Benefit At Statutory Income Tax Rates IncomeTaxReconciliationIncomeTaxExpenseBenefitAtStatutoryIncomeTaxRates	-48000000	USD
CY2013Q1	ago	Increase Decrease Financial Guaranty Insurance Contracts Future Expected Net Loss Due To Variable Interest Entities IncreaseDecreaseFinancialGuarantyInsuranceContractsFutureExpectedNetLossDueToVariableInterestEntities	130000000	USD
CY2013Q1	ago	Increase Decrease Financial Guaranty Insurance Contracts Future Expected Premium Revenue Due To Variable Interest Entities IncreaseDecreaseFinancialGuarantyInsuranceContractsFutureExpectedPremiumRevenueDueToVariableInterestEntities	244000000	USD
CY2012Q1	ago	Increase Decrease In Net Par Due To Commutations IncreaseDecreaseInNetParDueToCommutations	19073000000	USD
CY2013Q1	ago	Increase Decrease In Net Par Due To Commutations IncreaseDecreaseInNetParDueToCommutations	0	USD
CY2013Q1	ago	Increase Decrease In Unearned Premiums Due To Commutation Or Cancellation Of Previously Ceded Or Assumed Business And Changes In Expected Premiums IncreaseDecreaseInUnearnedPremiumsDueToCommutationOrCancellationOfPreviouslyCededOrAssumedBusinessAndChangesInExpectedPremiums	1000000	USD
CY2012Q1	ago	Increase Decrease In Unearned Premiums Due To Commutation Or Cancellation Of Previously Ceded Or Assumed Business And Changes In Expected Premiums IncreaseDecreaseInUnearnedPremiumsDueToCommutationOrCancellationOfPreviouslyCededOrAssumedBusinessAndChangesInExpectedPremiums	130000000	USD
CY2012Q1	ago	Increase Decrease In Unearned Premiums Due To Commutations IncreaseDecreaseInUnearnedPremiumsDueToCommutations	106000000	USD
CY2013Q1	ago	Increase Decrease In Unearned Premiums Due To Commutations IncreaseDecreaseInUnearnedPremiumsDueToCommutations	0	USD
CY2012Q1	ago	Increase Decrease In Unearned Premiums Due To Consolidation Of Fg Vies IncreaseDecreaseInUnearnedPremiumsDueToConsolidationOfFgVies	-5000000	USD
CY2013Q1	ago	Increase Decrease In Unearned Premiums Due To Consolidation Of Fg Vies IncreaseDecreaseInUnearnedPremiumsDueToConsolidationOfFgVies	-1000000	USD
CY2012Q1	ago	Increasedecreaseinunearnedpremiumsduetoforeignexchangetranslation Increasedecreaseinunearnedpremiumsduetoforeignexchangetranslation	3000000	USD
CY2013Q1	ago	Increasedecreaseinunearnedpremiumsduetoforeignexchangetranslation Increasedecreaseinunearnedpremiumsduetoforeignexchangetranslation	-4000000	USD
CY2012Q4	ago	Insured Financial Obligation Outstanding Principal Amount As Percentage Of Outstanding Principal For Identified Asset Class InsuredFinancialObligationOutstandingPrincipalAmountAsPercentageOfOutstandingPrincipalForIdentifiedAssetClass	1.000
CY2013Q1	ago	Insured Financial Obligation Outstanding Principal Amount As Percentage Of Outstanding Principal For Identified Asset Class InsuredFinancialObligationOutstandingPrincipalAmountAsPercentageOfOutstandingPrincipalForIdentifiedAssetClass	1.000
CY2013Q1	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Gross InsuredFinancialObligationsInsuredContractualPaymentsOutstandingGross	801747000000	USD
CY2012Q4	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Gross InsuredFinancialObligationsInsuredContractualPaymentsOutstandingGross	834950000000	USD
CY2013Q1	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Net InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet	751741000000	USD
CY2012Q4	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Net InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet	782180000000	USD
CY2012Q4	ago	Insured Financial Obligations Outstanding Principal Amount InsuredFinancialObligationsOutstandingPrincipalAmount	519893000000	USD
CY2013Q1	ago	Insured Financial Obligations Outstanding Principal Amount InsuredFinancialObligationsOutstandingPrincipalAmount	501817000000	USD
CY2013Q1	ago	Insured Financial Obligations Outstanding Principal Amount Selected European Exposure Net InsuredFinancialObligationsOutstandingPrincipalAmountSelectedEuropeanExposureNet	4184000000	USD
CY2013Q1	ago	Investing Activities Investment In Subsidiary InvestingActivitiesInvestmentInSubsidiary	0	USD
CY2013Q1	ago	Investment As Percentage Of Aggregate Amortized Cost1 InvestmentAsPercentageOfAggregateAmortizedCost1	1.00
CY2012Q4	ago	Investment As Percentage Of Aggregate Amortized Cost1 InvestmentAsPercentageOfAggregateAmortizedCost1	1.00
CY2013Q1	ago	Investments Amortized Cost InvestmentsAmortizedCost	10092000000	USD
CY2012Q4	ago	Investments Amortized Cost InvestmentsAmortizedCost	10163000000	USD
CY2013Q1	ago	Liabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaid After Recoveries For Rw LiabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaidAfterRecoveriesForRw	92000000	USD
CY2012Q1	ago	Liabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaid After Recoveries For Rw LiabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaidAfterRecoveriesForRw	133000000	USD
CY2012Q1	ago	Liabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaid Before Recoveries For Rw LiabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaidBeforeRecoveriesForRw	203000000	USD
CY2013Q1	ago	Liabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaid Before Recoveries For Rw LiabilityforunpaidclaimsandclaimsadjustmentexpenseclaimspaidBeforeRecoveriesForRw	181000000	USD
CY2012Q4	ago	Liquidation Rate For Real Estate Owned Category LiquidationRateForRealEstateOwnedCategory	1.00
CY2013Q1	ago	Liquidation Rate For Real Estate Owned Category LiquidationRateForRealEstateOwnedCategory	1.00
CY2013Q1	ago	Loss Estimate Sensitivity Analysis Increase In Conditional Default Rate Ramp Down Period LossEstimateSensitivityAnalysisIncreaseInConditionalDefaultRateRampDownPeriod	P3M
CY2012	ago	Maximum Number Of Payments Behind For Mortgage Borrower To Be Classified As Performing Borrower MaximumNumberOfPaymentsBehindForMortgageBorrowerToBeClassifiedAsPerformingBorrower	1	Payment
CY2013Q1	ago	Maximum Period Of Liquidity Claims MaximumPeriodOfLiquidityClaims	P1Y
CY2013Q1	ago	Minimum Amount Assumed Principal Amount For Internal Rating MinimumAmountAssumedPrincipalAmountForInternalRating	1000000	USD
CY2013Q1	ago	Minimum Number Of Proceedings For Recoveries To Have Potential Material Impact MinimumNumberOfProceedingsForRecoveriesToHavePotentialMaterialImpact	1	Lawsuit
CY2013Q1	ago	Mortgage Guaranty Insured Obligations Outstanding Principal Amount MortgageGuarantyInsuredObligationsOutstandingPrincipalAmount	149000000	USD
CY2013Q1	ago	Net Expected Loss Development After Recoveries For Rw NetExpectedLossDevelopmentAfterRecoveriesForRw	-98000000	USD
CY2012Q1	ago	Net Expected Loss Development After Recoveries For Rw NetExpectedLossDevelopmentAfterRecoveriesForRw	212000000	USD
CY2013Q1	ago	Net Expected Loss Development After Recoveries For Rw Excluding Other Lines Of Business NetExpectedLossDevelopmentAfterRecoveriesForRwExcludingOtherLinesOfBusiness	-88000000	USD
CY2012Q1	ago	Net Expected Loss Development After Recoveries For Rw Excluding Other Lines Of Business NetExpectedLossDevelopmentAfterRecoveriesForRwExcludingOtherLinesOfBusiness	212000000	USD
CY2012Q1	ago	Net Expected Loss Development Before Recoveries For Rw NetExpectedLossDevelopmentBeforeRecoveriesForRw	263000000	USD
CY2013Q1	ago	Net Expected Loss Development Before Recoveries For Rw NetExpectedLossDevelopmentBeforeRecoveriesForRw	59000000	USD
CY2013Q1	ago	Net Expected Loss To Be Paid After Recoveries For Rw NetExpectedLossToBePaidAfterRecoveriesForRw	487000000	USD
CY2012Q4	ago	Net Expected Loss To Be Paid After Recoveries For Rw NetExpectedLossToBePaidAfterRecoveriesForRw	677000000	USD
CY2011Q4	ago	Net Expected Loss To Be Paid After Recoveries For Rw NetExpectedLossToBePaidAfterRecoveriesForRw	1106000000	USD
CY2012Q1	ago	Net Expected Loss To Be Paid After Recoveries For Rw NetExpectedLossToBePaidAfterRecoveriesForRw	1185000000	USD
CY2012Q4	ago	Net Expected Loss To Be Paid After Recoveries For Rw Excluding Other Lines Of Business NetExpectedLossToBePaidAfterRecoveriesForRwExcludingOtherLinesOfBusiness	680000000	USD
CY2013Q1	ago	Net Expected Loss To Be Paid After Recoveries For Rw Excluding Other Lines Of Business NetExpectedLossToBePaidAfterRecoveriesForRwExcludingOtherLinesOfBusiness	500000000	USD
CY2012Q1	ago	Net Expected Loss To Be Paid Before Recoveries For Rw NetExpectedLossToBePaidBeforeRecoveriesForRw	2816000000	USD
CY2011Q4	ago	Net Expected Loss To Be Paid Before Recoveries For Rw NetExpectedLossToBePaidBeforeRecoveriesForRw	2756000000	USD
CY2012Q4	ago	Net Expected Loss To Be Paid Before Recoveries For Rw NetExpectedLossToBePaidBeforeRecoveriesForRw	2047000000	USD
CY2013Q1	ago	Net Expected Loss To Be Paid Before Recoveries For Rw NetExpectedLossToBePaidBeforeRecoveriesForRw	1925000000	USD
CY2013Q1	ago	Net Expected Loss To Be Paid For Consolidating Vies NetExpectedLossToBePaidForConsolidatingVies	138000000	USD
CY2013Q1	ago	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Basic NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesBasic	-144000000	USD
CY2012Q1	ago	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Basic NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesBasic	-483000000	USD
CY2013Q1	ago	Number Of Cds Counterparites That Would Constitute Termination Event NumberOfCdsCounterparitesThatWouldConstituteTerminationEvent	1
CY2013Q1	ago	Number Of Fixed Maturity Securities Valued Using Model Processes NumberOfFixedMaturitySecuritiesValuedUsingModelProcesses	35	Security
CY2013Q1	ago	Number Of Holding Companies Having Outstanding Public Debt NumberOfHoldingCompaniesHavingOutstandingPublicDebt	2	Company
CY2013Q1	ago	Number Of Types Of Second Lien Residential Mortgage Back Securities Insured NumberOfTypesOfSecondLienResidentialMortgageBackSecuritiesInsured	2	contract
CY2013Q1	ago	Number Of Vie That Did Not Require Consolidation NumberOfVieThatDidNotRequireConsolidation	1100	Entity
CY2013Q1	ago	Other Assets Consolidating OtherAssetsConsolidating	839000000	USD
CY2012Q4	ago	Other Assets Consolidating OtherAssetsConsolidating	729000000	USD
CY2013Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Excluding Other Than Temporary Impairment Losses Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodExcludingOtherThanTemporaryImpairmentLossesTax	-19000000	USD
CY2012Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Excluding Other Than Temporary Impairment Losses Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodExcludingOtherThanTemporaryImpairmentLossesTax	19000000	USD
CY2010	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Excluding Other Than Temporary Impairment Losses Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodExcludingOtherThanTemporaryImpairmentLossesTax		USD
CY2013Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Including Other Than Temporary Impairment Losses Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodIncludingOtherThanTemporaryImpairmentLossesTax	-8000000	USD
CY2012Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Including Other Than Temporary Impairment Losses Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodIncludingOtherThanTemporaryImpairmentLossesTax	-7000000	USD
CY2010	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Including Other Than Temporary Impairment Losses Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodIncludingOtherThanTemporaryImpairmentLossesTax		USD
CY2013Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Including Other Than Temporary Impairment Losses OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTaxIncludingOtherThanTemporaryImpairmentLosses	-16000000	USD
CY2012Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Including Other Than Temporary Impairment Losses OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTaxIncludingOtherThanTemporaryImpairmentLosses	-14000000	USD
CY2012Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities With No Other Than Temporary Impairment Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesWithNoOtherThanTemporaryImpairmentArisingDuringPeriodNetOfTax	42000000	USD
CY2013Q1	ago	Other Comprehensive Income Unrealized Holding Gain Loss On Securities With No Other Than Temporary Impairment Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesWithNoOtherThanTemporaryImpairmentArisingDuringPeriodNetOfTax	-50000000	USD
CY2013Q1	ago	Other Expenses Consolidating OtherExpensesConsolidating	60000000	USD
CY2012Q1	ago	Other Expenses Consolidating OtherExpensesConsolidating	62000000	USD
CY2013Q1	ago	Other Income Consolidating OtherIncomeConsolidating	46000000	USD
CY2012Q1	ago	Other Income Consolidating OtherIncomeConsolidating	36000000	USD
CY2013Q1	ago	Other Liabilities Consolidating OtherLiabilitiesConsolidating	533000000	USD
CY2012Q4	ago	Other Liabilities Consolidating OtherLiabilitiesConsolidating	529000000	USD
CY2012Q1	ago	Othercomprehensiveincomeother Othercomprehensiveincomeother	2000000	USD
CY2013Q1	ago	Othercomprehensiveincomeother Othercomprehensiveincomeother	-5000000	USD
CY2013Q1	ago	Outstanding Principal And Interest On Representations And Warranties Policies OutstandingPrincipalAndInterestOnRepresentationsAndWarrantiesPolicies	6335000000	USD
CY2012Q4	ago	Outstanding Principal And Interest On Representations And Warranties Policies OutstandingPrincipalAndInterestOnRepresentationsAndWarrantiesPolicies	6731000000	USD
CY2013Q1	ago	Paydown Of Financial Guaranty Variable Interest Entities Liabilities PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities	167000000	USD
CY2012Q1	ago	Paydown Of Financial Guaranty Variable Interest Entities Liabilities PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities	193000000	USD
CY2013Q1	ago	Percentage Of Cds Contracts Fair Valued Using Minimum Premium PercentageOfCdsContractsFairValuedUsingMinimumPremium	0.32
CY2012Q4	ago	Percentage Of Cds Contracts Fair Valued Using Minimum Premium PercentageOfCdsContractsFairValuedUsingMinimumPremium	0.71
CY2013Q1	ago	Period After End Of Reporting Period For Settlement Of Ceded Paid Losses PeriodAfterEndOfReportingPeriodForSettlementOfCededPaidLosses	P45D
CY2013Q1	ago	Period Company Extended Most Pessimistic Case For Market Recovery PeriodCompanyExtendedMostPessimisticCaseForMarketRecovery	P3M
CY2013Q1	ago	Period Company Reduced Most Optimistic Case For Market Recovery PeriodCompanyReducedMostOptimisticCaseForMarketRecovery	P3M
CY2012Q1	ago	Policyholder Benefits And Claims Incurred Adjustment For Consolidating Vies PolicyholderBenefitsAndClaimsIncurredAdjustmentForConsolidatingVies	-8000000	USD
CY2013Q1	ago	Policyholder Benefits And Claims Incurred Adjustment For Consolidating Vies PolicyholderBenefitsAndClaimsIncurredAdjustmentForConsolidatingVies	7000000	USD
CY2013Q1	ago	Policyholder Benefits And Claims Incurred Before Vie Adjustment PolicyholderBenefitsAndClaimsIncurredBeforeVieAdjustment	-55000000	USD
CY2012Q1	ago	Policyholder Benefits And Claims Incurred Before Vie Adjustment PolicyholderBenefitsAndClaimsIncurredBeforeVieAdjustment	250000000	USD
CY2013Q1	ago	Premiums Earned Excluding Accretion On Premiums Receivable PremiumsEarnedExcludingAccretionOnPremiumsReceivable	241000000	USD
CY2012Q1	ago	Premiums Earned Excluding Accretion On Premiums Receivable PremiumsEarnedExcludingAccretionOnPremiumsReceivable	189000000	USD
CY2013Q1	ago	Premiums Written Excluding Change In Life PremiumsWrittenExcludingChangeInLife	14000000	USD
CY2012Q1	ago	Premiums Written Excluding Change In Life PremiumsWrittenExcludingChangeInLife	13000000	USD
CY2012Q4	ago	Present Value Of Expected Claim Payments Recoveries PresentValueOfExpectedClaimPaymentsRecoveries	-282000000	USD
CY2013Q1	ago	Present Value Of Expected Claim Payments Recoveries PresentValueOfExpectedClaimPaymentsRecoveries	-286000000	USD
CY2012Q4	ago	Present Value Of Future Installment Fees Receivable PresentValueOfFutureInstallmentFeesReceivable	43000000	USD
CY2013Q1	ago	Present Value Of Future Installment Fees Receivable PresentValueOfFutureInstallmentFeesReceivable	42000000	USD
CY2013Q1	ago	Probability Of Paying More Claims Than Reimbursed ProbabilityOfPayingMoreClaimsThanReimbursed	0.50
CY2013Q1	ago	Proceeds From Financial Guaranty Variable Interest Entities Assets ProceedsFromFinancialGuarantyVariableInterestEntitiesAssets	138000000	USD
CY2012Q1	ago	Proceeds From Financial Guaranty Variable Interest Entities Assets ProceedsFromFinancialGuarantyVariableInterestEntitiesAssets	138000000	USD
CY2013Q1	ago	Proceeds From Termination Of Financial Guaranty Contracts Accounted For As Credit Derivatives ProceedsFromTerminationOfFinancialGuarantyContractsAccountedForAsCreditDerivatives	1000000	USD
CY2012Q1	ago	Proceeds From Termination Of Financial Guaranty Contracts Accounted For As Credit Derivatives ProceedsFromTerminationOfFinancialGuarantyContractsAccountedForAsCreditDerivatives	0	USD
CY2013Q1	ago	R And W Included In Credit Derivative Asset Liability RAndWIncludedInCreditDerivativeAssetLiability	226000000	USD
CY2012Q4	ago	R And W Included In Credit Derivative Asset Liability RAndWIncludedInCreditDerivativeAssetLiability	237000000	USD
CY2012Q1	ago	Realized Gains And Other Settlements RealizedGainsAndOtherSettlements	-57000000	USD
CY2013Q1	ago	Realized Gains And Other Settlements RealizedGainsAndOtherSettlements	18000000	USD
CY2013Q1	ago	Realized Investment Gains RealizedInvestmentGains	39000000	USD
CY2012Q1	ago	Realized Investment Gains RealizedInvestmentGains	9000000	USD
CY2012Q1	ago	Realized Investment Losses RealizedInvestmentLosses	3000000	USD
CY2013Q1	ago	Realized Investment Losses RealizedInvestmentLosses	6000000	USD
CY2012Q4	ago	Reinsurance Recoverable On Unpaid Losses ReinsuranceRecoverableOnUnpaidLosses	58000000	USD
CY2013Q1	ago	Reinsurance Recoverable On Unpaid Losses ReinsuranceRecoverableOnUnpaidLosses	56000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses Adjustment For Consolidating Vies ReserveForLossesAndLossAdjustmentExpensesAdjustmentForConsolidatingVies	68000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses Adjustment For Consolidating Vies ReserveForLossesAndLossAdjustmentExpensesAdjustmentForConsolidatingVies	64000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses For Breached Representations And Warranties ReserveForLossesAndLossAdjustmentExpensesForBreachedRepresentationsAndWarranties	522000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses For Breached Representations And Warranties ReserveForLossesAndLossAdjustmentExpensesForBreachedRepresentationsAndWarranties	571000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses For Breached Representations And Warranties Adjustment For Consolidating Vies ReserveForLossesAndLossAdjustmentExpensesForBreachedRepresentationsAndWarrantiesAdjustmentForConsolidatingVies	-33000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses For Breached Representations And Warranties Adjustment For Consolidating Vies ReserveForLossesAndLossAdjustmentExpensesForBreachedRepresentationsAndWarrantiesAdjustmentForConsolidatingVies	-39000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses For Breached Representations And Warranties After Vie Adjustment ReserveForLossesAndLossAdjustmentExpensesForBreachedRepresentationsAndWarrantiesAfterVieAdjustment	483000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses For Breached Representations And Warranties After Vie Adjustment ReserveForLossesAndLossAdjustmentExpensesForBreachedRepresentationsAndWarrantiesAfterVieAdjustment	538000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries	-17000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries	133000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries Adjustment For Consolidating Vies ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveriesAdjustmentForConsolidatingVies	-153000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries Adjustment For Consolidating Vies ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveriesAdjustmentForConsolidatingVies	-194000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries Before Vie Adjustment ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveriesBeforeVieAdjustment	-20000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries Before Vie Adjustment ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveriesBeforeVieAdjustment	-211000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance Before Vie Adjustment ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceBeforeVieAdjustment	544000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance Before Vie Adjustment ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceBeforeVieAdjustment	607000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance Recoverable ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceRecoverable	-543000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance Recoverable ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceRecoverable	-476000000	USD
CY2012Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance Salvage And Subrogation And Other Recoveries ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceSalvageAndSubrogationAndOtherRecoveries	103000000	USD
CY2013Q1	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance Salvage And Subrogation And Other Recoveries ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceSalvageAndSubrogationAndOtherRecoveries	-44000000	USD
CY2012Q1	ago	Sales Purchases Of Short Term Investments SalesPurchasesOfShortTermInvestments	143000000	USD
CY2013Q1	ago	Sales Purchases Of Short Term Investments SalesPurchasesOfShortTermInvestments	-88000000	USD
CY2012Q4	ago	Salvage And Subrogation Recoverable Payable And Other Recoveries Net SalvageAndSubrogationRecoverablePayableAndOtherRecoveriesNet	440000000	USD
CY2013Q1	ago	Salvage And Subrogation Recoverable Payable And Other Recoveries Net SalvageAndSubrogationRecoverablePayableAndOtherRecoveriesNet	520000000	USD
CY2012Q4	ago	Salvage And Subrogation Recoverable Payable Net SalvageAndSubrogationRecoverablePayableNet	410000000	USD
CY2013Q1	ago	Salvage And Subrogation Recoverable Payable Net SalvageAndSubrogationRecoverablePayableNet	493000000	USD
CY2013Q1	ago	Salvage And Subrogation Recoveries Value Adjustment For Consolidating Vies SalvageAndSubrogationRecoveriesValueAdjustmentForConsolidatingVies	262000000	USD
CY2012Q4	ago	Salvage And Subrogation Recoveries Value Adjustment For Consolidating Vies SalvageAndSubrogationRecoveriesValueAdjustmentForConsolidatingVies	217000000	USD
CY2012Q4	ago	Salvage And Subrogation Recoveries Value Before Vie Adjustment SalvageAndSubrogationRecoveriesValueBeforeVieAdjustment	627000000	USD
CY2013Q1	ago	Salvage And Subrogation Recoveries Value Before Vie Adjustment SalvageAndSubrogationRecoveriesValueBeforeVieAdjustment	755000000	USD
CY2012Q4	ago	Salvage And Subrogation Recoveries Value For Breached Representations And Warranties SalvageAndSubrogationRecoveriesValueForBreachedRepresentationsAndWarranties	449000000	USD
CY2013Q1	ago	Salvage And Subrogation Recoveries Value For Breached Representations And Warranties SalvageAndSubrogationRecoveriesValueForBreachedRepresentationsAndWarranties	600000000	USD
CY2012Q4	ago	Salvage And Subrogation Recoveries Value For Breached Representations And Warranties Adjustment For Consolidating Vies SalvageAndSubrogationRecoveriesValueForBreachedRepresentationsAndWarrantiesAdjustmentForConsolidatingVies	-169000000	USD
CY2013Q1	ago	Salvage And Subrogation Recoveries Value For Breached Representations And Warranties Adjustment For Consolidating Vies SalvageAndSubrogationRecoveriesValueForBreachedRepresentationsAndWarrantiesAdjustmentForConsolidatingVies	-236000000	USD
CY2012Q4	ago	Salvage And Subrogation Recoveries Value For Breached Representations And Warranties After Vie Adjustment SalvageAndSubrogationRecoveriesValueForBreachedRepresentationsAndWarrantiesAfterVieAdjustment	280000000	USD
CY2013Q1	ago	Salvage And Subrogation Recoveries Value For Breached Representations And Warranties After Vie Adjustment SalvageAndSubrogationRecoveriesValueForBreachedRepresentationsAndWarrantiesAfterVieAdjustment	364000000	USD
CY2013Q1	ago	Salvage Recoverable Asset SalvageRecoverableAsset	543000000	USD
CY2012Q4	ago	Salvage Recoverable Asset SalvageRecoverableAsset	456000000	USD
CY2012Q4	ago	Unrealized Loss On Investments UnrealizedLossOnInvestments	98000000	USD
CY2013Q1	ago	Second To Pay Insured Par Amount SecondToPayInsuredParAmount	24461000000	USD
CY2012Q4	ago	Securities Purchased For Loss Mitigation Or To Settle Credit Derivatives Fair Value Disclosures SecuritiesPurchasedForLossMitigationOrToSettleCreditDerivativesFairValueDisclosures	670000000	USD
CY2013Q1	ago	Securities Purchased For Loss Mitigation Or To Settle Credit Derivatives Fair Value Disclosures SecuritiesPurchasedForLossMitigationOrToSettleCreditDerivativesFairValueDisclosures	629000000	USD
CY2012Q4	ago	Securitiespurchasedforlossmitigationamountofgrosspar Securitiespurchasedforlossmitigationamountofgrosspar	1133000000	USD
CY2013Q1	ago	Securitiespurchasedforlossmitigationamountofgrosspar Securitiespurchasedforlossmitigationamountofgrosspar	1119000000	USD
CY2013Q1	ago	Securitiespurchasedtosettlecreditderivativecontractgrosspar Securitiespurchasedtosettlecreditderivativecontractgrosspar	219000000	USD
CY2012Q4	ago	Securitiespurchasedtosettlecreditderivativecontractgrosspar Securitiespurchasedtosettlecreditderivativecontractgrosspar	220000000	USD
CY2013Q1	ago	Sensitivity Analysis Number Of Months Recovery Delayed Under Most Stressful Scenario SensitivityAnalysisNumberOfMonthsRecoveryDelayedUnderMostStressfulScenario	P3M
CY2013Q1	ago	Sensitivity Analysis Number Of Months Recovery Expedited Under Least Stressful Scenario SensitivityAnalysisNumberOfMonthsRecoveryExpeditedUnderLeastStressfulScenario	P3M
CY2012Q1	ago	Share Activity Under Option And Incentive Plans ShareActivityUnderOptionAndIncentivePlans	3000000	USD
CY2013Q1	ago	Share Activity Under Option And Incentive Plans ShareActivityUnderOptionAndIncentivePlans	2000000	USD
CY2013Q1	ago	Stock Based Compensation And Other StockBasedCompensationAndOther	0	USD
CY2013Q1	ago	Threshold For Measuring Unrealized Losses As Percent Of Book Value ThresholdForMeasuringUnrealizedLossesAsPercentOfBookValue	0.1
CY2013Q1	ago	Unearned Premiums Net UnearnedPremiumsNet	4447000000	USD
CY2012Q4	ago	Unearned Premiums Net UnearnedPremiumsNet	4646000000	USD
CY2013Q1	ago	Unrealized Gain On Investments UnrealizedGainOnInvestments	713000000	USD
CY2012Q4	ago	Unrealized Gain On Investments UnrealizedGainOnInvestments	808000000	USD
CY2013Q1	ago	Unrealized Gains Losses UnrealizedGainsLosses	-610000000	USD
CY2012Q1	ago	Unrealized Gains Losses UnrealizedGainsLosses	-634000000	USD
CY2013Q1	ago	Unrealized Loss On Investments UnrealizedLossOnInvestments	91000000	USD
CY2013Q1	ago	Value Net Fair Value Gains And Losses On Fg Vies Are Expected To Reverse To On Maurity Of Vie Debt Except Claim Payments Paid By Agc Or Agm Under Financial Guaranty Insurance Contracts ValueNetFairValueGainsAndLossesOnFgViesAreExpectedToReverseToOnMaurityOfVieDebtExceptClaimPaymentsPaidByAgcOrAgmUnderFinancialGuarantyInsuranceContracts	0	USD
CY2013Q1	ago	Variable Interest Entity Consolidated Difference Between Aggregate Unpaid Principal And Aggregate Fair Value Of Assets VariableInterestEntityConsolidatedDifferenceBetweenAggregateUnpaidPrincipalAndAggregateFairValueOfAssets	2432000000	USD
CY2013Q1	ago	Variable Interest Entity Consolidated Difference Between Aggregate Unpaid Principal And Aggregate Fair Value Of Liabilities VariableInterestEntityConsolidatedDifferenceBetweenAggregateUnpaidPrincipalAndAggregateFairValueOfLiabilities	1977000000	USD
CY2013Q1	ago	Variable Interest Entity Consolidated Gain Loss On Credit Risk VariableInterestEntityConsolidatedGainLossOnCreditRisk	71000000	USD
CY2013Q1	ago	Variable Interest Entity Consolidated Unpaid Principal Balance Over90 Days Or More Past Due VariableInterestEntityConsolidatedUnpaidPrincipalBalanceOver90DaysOrMorePastDue	862000000	USD
CY2013Q1	ago	Variable Interest Entity Consolidation Gain Or Loss VariableInterestEntityConsolidationGainOrLoss	500000	USD
CY2012Q1	ago	Variable Interest Entity Consolidation Gain Or Loss VariableInterestEntityConsolidationGainOrLoss	6000000	USD
CY2013Q1	ago	Variable Interest Entity Financial Guaranty VariableInterestEntityFinancialGuaranty	70000000	USD
CY2012Q1	ago	Variable Interest Entity Financial Guaranty VariableInterestEntityFinancialGuaranty	-41000000	USD
CY2012Q1	ago	Variable Interest Entity Financial Guaranty Income Tax Expense Benefit VariableInterestEntityFinancialGuarantyIncomeTaxExpenseBenefit	-18000000	USD
CY2013Q1	ago	Variable Interest Entity Financial Guaranty Income Tax Expense Benefit VariableInterestEntityFinancialGuarantyIncomeTaxExpenseBenefit	15000000	USD
CY2013Q1	ago	Variable Interest Entity Financial Guaranty Insurance Contracts Premiums Collected In Cash VariableInterestEntityFinancialGuarantyInsuranceContractsPremiumsCollectedInCash	35000000	USD
CY2013Q1	ago	Variable Interest Entity Financial Guaranty Net Income Or Loss VariableInterestEntityFinancialGuarantyNetIncomeOrLoss	28000000	USD
CY2012Q1	ago	Variable Interest Entity Financial Guaranty Net Income Or Loss VariableInterestEntityFinancialGuarantyNetIncomeOrLoss	-34000000	USD
CY2013Q1	ago	Variable Interest Entity Financial Guaranty Net Investment Income VariableInterestEntityFinancialGuarantyNetInvestmentIncome	-3000000	USD
CY2012Q1	ago	Variable Interest Entity Financial Guaranty Net Investment Income VariableInterestEntityFinancialGuarantyNetInvestmentIncome	-3000000	USD
CY2013Q1	ago	Variable Interest Entity Financial Guaranty Net Realized Investment Gain Loss VariableInterestEntityFinancialGuarantyNetRealizedInvestmentGainLoss	1000000	USD
CY2012Q1	ago	Variable Interest Entity Financial Guaranty Net Realized Investment Gain Loss VariableInterestEntityFinancialGuarantyNetRealizedInvestmentGainLoss	1000000	USD
CY2012Q4	ago	Variable Interest Entity Financial Guaranty Shareholders Equity Attributable To Parent VariableInterestEntityFinancialGuarantyShareholdersEquityAttributableToParent	-348000000	USD
CY2013Q1	ago	Variable Interest Entity Financial Guaranty Shareholders Equity Attributable To Parent VariableInterestEntityFinancialGuarantyShareholdersEquityAttributableToParent	-322000000	USD
CY2012	ago	Variable Interest Entity Number Matured VariableInterestEntityNumberMatured	-2	Entity
CY2013Q1	ago	Variable Interest Entity Number Matured VariableInterestEntityNumberMatured	-1	Entity
CY2013Q1	ago	Variable Interest Entity Number Of Entities To Be Consolidated VariableInterestEntityNumberOfEntitiesToBeConsolidated	11	Entity
CY2012	ago	Variable Interest Entity Number Of Entities To Be Consolidated VariableInterestEntityNumberOfEntitiesToBeConsolidated	2	Entity
CY2012Q4	ago	Variable Interest Entity Number Of Entities Total VariableInterestEntityNumberOfEntitiesTotal	33	Entity
CY2013Q1	ago	Variable Interest Entity Number Of Entities Total VariableInterestEntityNumberOfEntitiesTotal	43	Entity
CY2011Q4	ago	Variable Interest Entity Number Of Entities Total VariableInterestEntityNumberOfEntitiesTotal	33	Entity
CY2013Q1	ago	Variable Interest Entity Number Of Entities With Recourse VariableInterestEntityNumberOfEntitiesWithRecourse	43	Entity
CY2012Q4	ago	Variable Interest Entity Number Of Entities With Recourse VariableInterestEntityNumberOfEntitiesWithRecourse	33	Entity
CY2012Q4	ago	Variable Interest Entity Number Of Entities Without Recourse VariableInterestEntityNumberOfEntitiesWithoutRecourse	0	Entity
CY2013Q1	ago	Variable Interest Entity Number Of Entities Without Recourse VariableInterestEntityNumberOfEntitiesWithoutRecourse	0	Entity
CY2012Q1	ago	Variable Interest Entity Premiums Receivable At Carrying Value VariableInterestEntityPremiumsReceivableAtCarryingValue	33000000	USD
CY2013Q1	ago	Variable Interest Entity Premiums Receivable At Carrying Value VariableInterestEntityPremiumsReceivableAtCarryingValue	28000000	USD
CY2012Q4	ago	Variable Interest Entity Unearned Premiums Net VariableInterestEntityUnearnedPremiumsNet	262000000	USD
CY2013Q1	ago	Variable Interest Entity Unearned Premiums Net VariableInterestEntityUnearnedPremiumsNet	244000000	USD
CY2013Q1	ago	Variableinterestentityassetsunpaidprincipalbalancedayspastdue Variableinterestentityassetsunpaidprincipalbalancedayspastdue	P90D
CY2013Q1	dei	Amendment Flag AmendmentFlag	false
CY2013Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2013Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013Q1	dei	Document Period End Date DocumentPeriodEndDate	2013-03-31
CY2013Q1	dei	Document Type DocumentType	10-Q
CY2013Q1	dei	Entity Central Index Key EntityCentralIndexKey	0001273813
CY2013Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	189776540	shares
CY2013Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q1	dei	Entity Registrant Name EntityRegistrantName	ASSURED GUARANTY LTD

Files In Submission

Name	View Source	Status
0001273813-13-000027-index-headers.html	Edgar Link	pending
0001273813-13-000027-index.html	Edgar Link	pending
0001273813-13-000027.txt	Edgar Link	pending
0001273813-13-000027-xbrl.zip	Edgar Link	pending
agl-33113x10qexhibit101.htm	Edgar Link	pending
agl-33113x10qexhibit102.htm	Edgar Link	pending
agl-33113x10qexhibit103.htm	Edgar Link	pending
agl-33113x10qexhibit104.htm	Edgar Link	pending
agl-33113x10qexhibit105.htm	Edgar Link	pending
agl-33113x10qexhibit106.htm	Edgar Link	pending
ago-03312013x10qex311.htm	Edgar Link	pending
ago-03312013x10qex312.htm	Edgar Link	pending
ago-03312013x10qex321.htm	Edgar Link	pending
ago-03312013x10qex322.htm	Edgar Link	pending
ago-20130331.xml	Edgar Link	completed
ago-20130331.xsd	Edgar Link	pending
ago-20130331_cal.xml	Edgar Link	unprocessable
ago-20130331_def.xml	Edgar Link	unprocessable
ago-20130331_lab.xml	Edgar Link	unprocessable
ago-20130331_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
gaapago-03x31x2013x10q.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$AGO
ASSURED GUARANTY LTD Stock $ago

2013 Q1 Form 10-Q Financial Statement

#000127381313000027 Filed on May 10, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AGO ASSURED GUARANTY LTD Stock $ago

2013 Q1 Form 10-Q Financial Statement

#000127381313000027 Filed on May 10, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AGO
ASSURED GUARANTY LTD Stock $ago