$AGO
ASSURED GUARANTY LTD Stock $ago

$ago Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000127381324000007 Filed on February 28, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$245.0M	$313.0M	$1.373B
YoY Change	-13.43%	21.32%	89.9%
Cost Of Revenue	-$1.000M		$162.0M
YoY Change	-125.0%		912.5%
Gross Profit	$246.0M		$1.211B
YoY Change	-11.83%		71.29%
Gross Profit Margin	100.41%		88.2%
Selling, General & Admin	$58.00M	$52.00M	$251.0M
YoY Change	-29.27%	-24.64%	-2.71%
% of Gross Profit	23.58%		20.73%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.000M		$13.00M
YoY Change	100.0%		-7.14%
% of Gross Profit	2.44%		1.07%
Operating Expenses	$102.0M	$105.0M	$590.0M
YoY Change	-13.56%	-26.06%	62.98%
Operating Profit	$144.0M		$621.0M
YoY Change	-10.56%		80.0%
Interest Expense	$23.00M	-$22.00M	$90.00M
YoY Change	9.52%	144.44%	11.11%
% of Operating Profit	15.97%		14.49%
Other Income/Expense, Net
YoY Change
Pretax Income	$144.0M	$202.0M	$668.0M
YoY Change	20.0%	104.04%	351.35%
Income Tax	$31.00M	-$177.0M	-$93.00M
% Of Pretax Income	21.53%	-87.62%	-13.92%
Net Earnings	$109.0M	$376.0M	$739.0M
YoY Change	34.57%	300.0%	495.97%
Net Earnings / Revenue	44.49%	120.13%	53.82%
Basic Earnings Per Share	$1.94		$12.54
Diluted Earnings Per Share	$1.89	$6.44	$12.30
COMMON SHARES
Basic Shares Outstanding	55.46M shares	57.26M shares	58.40M shares
Diluted Shares Outstanding	57.10M shares		59.60M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$137.0M	$286.0M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment			$71.00M
YoY Change			-29.0%
Goodwill		$0.00
YoY Change		-100.0%
Intangibles
YoY Change
Long-Term Investments	$9.264B	$9.481B	$9.481B
YoY Change	-32.38%	-31.58%	-31.58%
Other Assets	$100.0M	$28.00M	$28.00M
YoY Change	-55.95%	1300.0%	1300.0%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$12.17B	$12.54B	$12.54B
YoY Change	-27.48%	-25.55%	-25.55%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses			$87.00M
YoY Change			-13.0%
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			$87.00M
YoY Change			-13.0%
LONG-TERM LIABILITIES
Long-Term Debt	$1.695B	$1.694B	$1.694B
YoY Change	1.13%	1.13%	1.13%
Other Long-Term Liabilities	$872.0M	$1.046B	$959.0M
YoY Change	-84.87%	-82.45%	-83.63%
Total Long-Term Liabilities	$2.567B	$2.740B	$2.653B
YoY Change	-65.5%	-64.11%	-64.79%
TOTAL LIABILITIES
Total Short-Term Liabilities			$87.00M
Total Long-Term Liabilities	$2.567B	$2.740B	$2.653B
Total Liabilities	$6.486B	$6.774B	$6.826B
YoY Change	-42.92%	-41.36%	-42.05%
SHAREHOLDERS EQUITY
Retained Earnings	$6.014B	$6.070B
YoY Change	6.67%	8.84%
Common Stock	$1.000M	$1.000M
YoY Change	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$5.629B	$5.713B	$5.713B
YoY Change
Total Liabilities & Shareholders Equity	$12.17B	$12.54B	$12.54B
YoY Change	-27.48%	-25.55%	-25.55%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$109.0M	$376.0M	$739.0M
YoY Change	34.57%	300.0%	495.97%
Depreciation, Depletion And Amortization	$6.000M		$13.00M
YoY Change	100.0%		-7.14%
Cash From Operating Activities	-$74.00M	$203.0M	$461.0M
YoY Change	-123.72%	-132.17%	-118.6%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	$1.000M	$103.0M	$3.000M
YoY Change	0.0%	-83.17%	0.0%
Cash From Investing Activities	$253.0M	$103.0M	$286.0M
YoY Change	-369.15%	-83.17%	-83.56%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$199.0M
YoY Change			-60.2%
Debt Paid & Issued, Net			$330.0M
YoY Change			16400.0%
Cash From Financing Activities	-$327.0M	-137.0M	-$670.0M
YoY Change	10.47%	218.6%	-209.48%
NET CHANGE
Cash From Operating Activities	-$74.00M	203.0M	$461.0M
Cash From Investing Activities	$253.0M	103.0M	$286.0M
Cash From Financing Activities	-$327.0M	-137.0M	-$670.0M
Net Change In Cash	-$149.0M	169.0M	$79.00M
YoY Change	93.51%	-372.58%	-158.52%
FREE CASH FLOW
Cash From Operating Activities	-$74.00M	$203.0M	$461.0M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-58000000	usd
CY2023	ago	Fair Value Gain Loss On Committed Capital Securities FairValueGainLossOnCommittedCapitalSecurities	-35000000	usd
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CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	58000000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	371000000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001273813
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-32141
CY2023	dei	Entity Registrant Name EntityRegistrantName	ASSURED GUARANTY LTD.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	D0
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-0429991
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	30 Woodbourne Avenue
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Hamilton
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	HM 08
CY2023	dei	Entity Address Country EntityAddressCountry	BM
CY2023	dei	City Area Code CityAreaCode	441
CY2023	dei	Local Phone Number LocalPhoneNumber	279-5700
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
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CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	55461633	shares
CY2023	dei	Auditor Firm AuditorFirmId	238
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CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-156000000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3000000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-38000000	usd
CY2023	ago	Other Comprehensive Income Loss Availableforsale Securities Without Credit Impairment Tax OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithoutCreditImpairmentTax	14000000	usd
CY2023	ago	Other Comprehensive Income Loss Available For Sale Securities Without Credit Impairment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax	141000000	usd
CY2022	ago	Other Comprehensive Income Loss Available For Sale Securities Without Credit Impairment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax	-718000000	usd
CY2021	ago	Other Comprehensive Income Loss Available For Sale Securities Without Credit Impairment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithoutCreditImpairmentNetOfTax	-202000000	usd
CY2023	ago	Other Comprehensive Income Loss Availableforsale Securities With Credit Impairment Tax OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax	1000000	usd
CY2022	ago	Other Comprehensive Income Loss Availableforsale Securities With Credit Impairment Tax OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax	-20000000	usd
CY2021	ago	Other Comprehensive Income Loss Availableforsale Securities With Credit Impairment Tax OtherComprehensiveIncomeLossAvailableforsaleSecuritiesWithCreditImpairmentTax	2000000	usd
CY2023	ago	Other Comprehensive Income Loss Available For Sale Securities With Credit Impairment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax	6000000	usd
CY2022	ago	Other Comprehensive Income Loss Available For Sale Securities With Credit Impairment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax	-86000000	usd
CY2021	ago	Other Comprehensive Income Loss Available For Sale Securities With Credit Impairment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesWithCreditImpairmentNetOfTax	6000000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	147000000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-804000000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-196000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	3000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	-2000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	-1000000	usd
CY2023	ago	Other Comprehensive Income Loss Other Netof Tax Portion Attributable To Parent OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent	6000000	usd
CY2022	ago	Other Comprehensive Income Loss Other Netof Tax Portion Attributable To Parent OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent	-9000000	usd
CY2021	ago	Other Comprehensive Income Loss Other Netof Tax Portion Attributable To Parent OtherComprehensiveIncomeLossOtherNetofTaxPortionAttributableToParent	-1000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	156000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-815000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-198000000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	917000000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-678000000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	221000000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	22000000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	13000000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	30000000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	895000000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-691000000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	191000000	usd
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6684000000	usd
CY2021	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	418000000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.88
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	65000000	usd
CY2021	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	496000000	usd
CY2021	ago	Stock Issued During Period Value Sharebased Compensationand Other StockIssuedDuringPeriodValueSharebasedCompensationandOther	19000000	usd
CY2021	ago	Noncontrolling Interest Increase From Vie Consolidation NoncontrollingInterestIncreaseFromVIEConsolidation	89000000	usd
CY2021	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	40000000	usd
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	13000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-198000000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6478000000	usd
CY2022	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	138000000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.00
CY2022	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	64000000	usd
CY2022	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	503000000	usd
CY2022	ago	Stock Issued During Period Value Sharebased Compensationand Other StockIssuedDuringPeriodValueSharebasedCompensationandOther	30000000	usd
CY2022	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	89000000	usd
CY2022	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	61000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-815000000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5292000000	usd
CY2023	us-gaap	Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest	761000000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.12
CY2023	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	68000000	usd
CY2023	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	199000000	usd
CY2023	ago	Stock Issued During Period Value Sharebased Compensationand Other StockIssuedDuringPeriodValueSharebasedCompensationandOther	21000000	usd
CY2023	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	16000000	usd
CY2023	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	20000000	usd
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	70000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	156000000	usd
CY2023	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	132000000	usd
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5765000000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	761000000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	137000000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	419000000	usd
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-58000000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-65000000	usd
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-69000000	usd
CY2023	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	37000000	usd
CY2022	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-5000000	usd
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	0	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-156000000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3000000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-38000000	usd
CY2023	ago	Realized Noncash Investments Gains Losses RealizedNoncashInvestmentsGainsLosses	-14000000	usd
CY2022	ago	Realized Noncash Investments Gains Losses RealizedNoncashInvestmentsGainsLosses	-56000000	usd
CY2021	ago	Realized Noncash Investments Gains Losses RealizedNoncashInvestmentsGainsLosses	15000000	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	28000000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-39000000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	94000000	usd
CY2023	ago	Fair Value Gain Loss On Committed Capital Securities FairValueGainLossOnCommittedCapitalSecurities	-35000000	usd
CY2022	ago	Fair Value Gain Loss On Committed Capital Securities FairValueGainLossOnCommittedCapitalSecurities	24000000	usd
CY2021	ago	Fair Value Gain Loss On Committed Capital Securities FairValueGainLossOnCommittedCapitalSecurities	-28000000	usd
CY2023	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	74000000	usd
CY2022	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	-34000000	usd
CY2021	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	0	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-175000000	usd
CY2023	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	262000000	usd
CY2022	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	0	usd
CY2023	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	157000000	usd
CY2022	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	-74000000	usd
CY2021	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	0	usd
CY2023	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	26000000	usd
CY2022	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-93000000	usd
CY2021	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-17000000	usd
CY2023	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	35000000	usd
CY2022	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	-1207000000	usd
CY2021	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	-99000000	usd
CY2023	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	72000000	usd
CY2022	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-106000000	usd
CY2021	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	64000000	usd
CY2023	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	112000000	usd
CY2022	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	-8000000	usd
CY2021	us-gaap	Increase Decrease In Derivative Assets And Liabilities IncreaseDecreaseInDerivativeAssetsAndLiabilities	-54000000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	90000000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	37000000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	8000000	usd
CY2023	ago	Purchasesof Securitiesof Consolidated Investment Vehicles PurchasesofSecuritiesofConsolidatedInvestmentVehicles	340000000	usd
CY2022	ago	Purchasesof Securitiesof Consolidated Investment Vehicles PurchasesofSecuritiesofConsolidatedInvestmentVehicles	3201000000	usd
CY2021	ago	Purchasesof Securitiesof Consolidated Investment Vehicles PurchasesofSecuritiesofConsolidatedInvestmentVehicles	4957000000	usd
CY2023	ago	Proceeds From Sales Of Securities Of Consolidated Investment Vehicles ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles	675000000	usd
CY2022	ago	Proceeds From Sales Of Securities Of Consolidated Investment Vehicles ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles	1513000000	usd
CY2021	ago	Proceeds From Sales Of Securities Of Consolidated Investment Vehicles ProceedsFromSalesOfSecuritiesOfConsolidatedInvestmentVehicles	2161000000	usd
CY2023	ago	Maturities And Paydowns Of Securities Of Consolidated Investment Vehicles MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles	60000000	usd
CY2022	ago	Maturities And Paydowns Of Securities Of Consolidated Investment Vehicles MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles	156000000	usd
CY2021	ago	Maturities And Paydowns Of Securities Of Consolidated Investment Vehicles MaturitiesAndPaydownsOfSecuritiesOfConsolidatedInvestmentVehicles	430000000	usd
CY2023	ago	Proceeds From Payments For Money Market Funds ProceedsFromPaymentsForMoneyMarketFunds	-66000000	usd
CY2022	ago	Proceeds From Payments For Money Market Funds ProceedsFromPaymentsForMoneyMarketFunds	-6000000	usd
CY2021	ago	Proceeds From Payments For Money Market Funds ProceedsFromPaymentsForMoneyMarketFunds	6000000	usd
CY2023	ago	Payments To Cover Securities Sold Short PaymentsToCoverSecuritiesSoldShort	0	usd
CY2022	ago	Payments To Cover Securities Sold Short PaymentsToCoverSecuritiesSoldShort	223000000	usd
CY2021	ago	Payments To Cover Securities Sold Short PaymentsToCoverSecuritiesSoldShort	621000000	usd
CY2023	ago	Proceeds From Securities Sold Short ProceedsFromSecuritiesSoldShort	0	usd
CY2022	ago	Proceeds From Securities Sold Short ProceedsFromSecuritiesSoldShort	188000000	usd
CY2021	ago	Proceeds From Securities Sold Short ProceedsFromSecuritiesSoldShort	618000000	usd
CY2023	ago	Increase Decreasein Other Operating Activitiesof Consolidated Investment Vehicles IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles	-85000000	usd
CY2022	ago	Increase Decreasein Other Operating Activitiesof Consolidated Investment Vehicles IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles	134000000	usd
CY2021	ago	Increase Decreasein Other Operating Activitiesof Consolidated Investment Vehicles IncreaseDecreaseinOtherOperatingActivitiesofConsolidatedInvestmentVehicles	-100000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	461000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2479000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1937000000	usd
CY2023	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	540000000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1236000000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	862000000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	717000000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-19000000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	428000000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	746000000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	682000000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1148000000	usd
CY2023	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	16000000	usd
CY2022	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	63000000	usd
CY2021	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	0	usd
CY2023	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	4000000	usd
CY2022	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	0	usd
CY2021	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	0	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	36000000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	36000000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Shortterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments	36000000	usd
CY2023	ago	Payments For Proceeds From Short Term Investments With Maturities Of Less Than Three Months PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths	872000000	usd
CY2022	ago	Payments For Proceeds From Short Term Investments With Maturities Of Less Than Three Months PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths	-439000000	usd
CY2021	ago	Payments For Proceeds From Short Term Investments With Maturities Of Less Than Three Months PaymentsForProceedsFromShortTermInvestmentsWithMaturitiesOfLessThanThreeMonths	410000000	usd
CY2023	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	0	usd
CY2022	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	121000000	usd
CY2021	us-gaap	Proceeds From Payments For Trading Securities ProceedsFromPaymentsForTradingSecurities	0	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	63000000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	87000000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	usd
CY2023	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	198000000	usd
CY2022	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	25000000	usd
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	79000000	usd
CY2023	ago	Proceeds From Saleof Other Invested Assets ProceedsFromSaleofOtherInvestedAssets	29000000	usd
CY2022	ago	Proceeds From Saleof Other Invested Assets ProceedsFromSaleofOtherInvestedAssets	36000000	usd
CY2021	ago	Proceeds From Saleof Other Invested Assets ProceedsFromSaleofOtherInvestedAssets	80000000	usd
CY2023	ago	Proceedsfrom Paydownson Financial Guaranty Variable Interest Entities Assets ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets	175000000	usd
CY2022	ago	Proceedsfrom Paydownson Financial Guaranty Variable Interest Entities Assets ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets	84000000	usd
CY2021	ago	Proceedsfrom Paydownson Financial Guaranty Variable Interest Entities Assets ProceedsfromPaydownsonFinancialGuarantyVariableInterestEntitiesAssets	62000000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3000000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3000000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	6000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	286000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1740000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	23000000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	67000000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	64000000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	66000000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	199000000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	500000000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	496000000	usd
CY2023	ago	Paydown Of Financial Guaranty Variable Interest Entities Liabilities PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities	149000000	usd
CY2022	ago	Paydown Of Financial Guaranty Variable Interest Entities Liabilities PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities	99000000	usd
CY2021	ago	Paydown Of Financial Guaranty Variable Interest Entities Liabilities PaydownOfFinancialGuarantyVariableInterestEntitiesLiabilities	53000000	usd
CY2023	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	345000000	usd
CY2022	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	0	usd
CY2021	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	889000000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	330000000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2000000	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	620000000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-6000000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	26000000	usd
CY2023	ago	Proceedsfrom Issuanceof Collateralized Loan Obligations ProceedsfromIssuanceofCollateralizedLoanObligations	0	usd
CY2022	ago	Proceedsfrom Issuanceof Collateralized Loan Obligations ProceedsfromIssuanceofCollateralizedLoanObligations	1372000000	usd
CY2021	ago	Proceedsfrom Issuanceof Collateralized Loan Obligations ProceedsfromIssuanceofCollateralizedLoanObligations	3276000000	usd
CY2023	ago	Repayments Of Collateralized Loan Obligations RepaymentsOfCollateralizedLoanObligations	1000000	usd
CY2022	ago	Repayments Of Collateralized Loan Obligations RepaymentsOfCollateralizedLoanObligations	373000000	usd
CY2021	ago	Repayments Of Collateralized Loan Obligations RepaymentsOfCollateralizedLoanObligations	824000000	usd
CY2023	ago	Proceeds From Issuance Of Warehouse Loans And Equity ProceedsFromIssuanceOfWarehouseLoansAndEquity	0	usd
CY2022	ago	Proceeds From Issuance Of Warehouse Loans And Equity ProceedsFromIssuanceOfWarehouseLoansAndEquity	991000000	usd
CY2021	ago	Proceeds From Issuance Of Warehouse Loans And Equity ProceedsFromIssuanceOfWarehouseLoansAndEquity	1338000000	usd
CY2023	ago	Repaymentof Warehouse Loansand Equity RepaymentofWarehouseLoansandEquity	166000000	usd
CY2022	ago	Repaymentof Warehouse Loansand Equity RepaymentofWarehouseLoansandEquity	796000000	usd
CY2021	ago	Repaymentof Warehouse Loansand Equity RepaymentofWarehouseLoansandEquity	1537000000	usd
CY2023	ago	Contributions From Noncontrolling Interests To Investment Vehicles ContributionsFromNoncontrollingInterestsToInvestmentVehicles	0	usd
CY2022	ago	Contributions From Noncontrolling Interests To Investment Vehicles ContributionsFromNoncontrollingInterestsToInvestmentVehicles	74000000	usd
CY2021	ago	Contributions From Noncontrolling Interests To Investment Vehicles ContributionsFromNoncontrollingInterestsToInvestmentVehicles	39000000	usd
CY2023	ago	Distributions To Redeemable Noncontrolling Interests From Investment Vehicles DistributionsToRedeemableNoncontrollingInterestsFromInvestmentVehicles	80000000	usd
CY2022	ago	Distributions To Redeemable Noncontrolling Interests From Investment Vehicles DistributionsToRedeemableNoncontrollingInterestsFromInvestmentVehicles	26000000	usd
CY2021	ago	Distributions To Redeemable Noncontrolling Interests From Investment Vehicles DistributionsToRedeemableNoncontrollingInterestsFromInvestmentVehicles	12000000	usd
CY2023	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-4000000	usd
CY2022	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	41000000	usd
CY2021	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	0	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-670000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	612000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1960000000	usd
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2000000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-8000000	usd
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2000000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	79000000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-135000000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	44000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	207000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	342000000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	298000000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	286000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	207000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	342000000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4000000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	105000000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	24000000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	77000000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	77000000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	80000000	usd
CY2023	ago	Noncash Or Part Noncash Acquisition Investments Acquired Available For Sale NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale	-1000000	usd
CY2022	ago	Noncash Or Part Noncash Acquisition Investments Acquired Available For Sale NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale	-986000000	usd
CY2021	ago	Noncash Or Part Noncash Acquisition Investments Acquired Available For Sale NoncashOrPartNoncashAcquisitionInvestmentsAcquiredAvailableForSale	0	usd
CY2023	ago	Noncash Or Part Noncash Acquisition Investments Sold Available For Sale NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale	0	usd
CY2022	ago	Noncash Or Part Noncash Acquisition Investments Sold Available For Sale NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale	27000000	usd
CY2021	ago	Noncash Or Part Noncash Acquisition Investments Sold Available For Sale NoncashOrPartNoncashAcquisitionInvestmentsSoldAvailableForSale	0	usd
CY2023	ago	Noncash Or Part Noncash Acquisition Investments Acquired Trading NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading	0	usd
CY2022	ago	Noncash Or Part Noncash Acquisition Investments Acquired Trading NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading	-549000000	usd
CY2021	ago	Noncash Or Part Noncash Acquisition Investments Acquired Trading NoncashOrPartNoncashAcquisitionInvestmentsAcquiredTrading	0	usd
CY2023	ago	Noncash Or Part Noncash Acquisition Investments Sold Trading NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading	0	usd
CY2022	ago	Noncash Or Part Noncash Acquisition Investments Sold Trading NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading	6000000	usd
CY2021	ago	Noncash Or Part Noncash Acquisition Investments Sold Trading NoncashOrPartNoncashAcquisitionInvestmentsSoldTrading	0	usd
CY2023	ago	Payments To Acquire Debt Securities Fgvi Es Non Cash PaymentsToAcquireDebtSecuritiesFGVIEsNonCash	0	usd
CY2022	ago	Payments To Acquire Debt Securities Fgvi Es Non Cash PaymentsToAcquireDebtSecuritiesFGVIEsNonCash	-234000000	usd
CY2021	ago	Payments To Acquire Debt Securities Fgvi Es Non Cash PaymentsToAcquireDebtSecuritiesFGVIEsNonCash	0	usd
CY2023	ago	Noncash Contributions From Noncontrolling Interests NoncashContributionsFromNoncontrollingInterests	20000000	usd
CY2022	ago	Noncash Contributions From Noncontrolling Interests NoncashContributionsFromNoncontrollingInterests	36000000	usd
CY2021	ago	Noncash Contributions From Noncontrolling Interests NoncashContributionsFromNoncontrollingInterests	1000000	usd
CY2023	ago	Noncash Distributions To Noncontrolling Interests NoncashDistributionsToNoncontrollingInterests	27000000	usd
CY2022	ago	Noncash Distributions To Noncontrolling Interests NoncashDistributionsToNoncontrollingInterests	56000000	usd
CY2021	ago	Noncash Distributions To Noncontrolling Interests NoncashDistributionsToNoncontrollingInterests	1000000	usd
CY2023	ago	Deconsolidation Assets Acquired Noncash DeconsolidationAssetsAcquiredNoncash	437000000	usd
CY2022	ago	Deconsolidation Assets Acquired Noncash DeconsolidationAssetsAcquiredNoncash	0	usd
CY2021	ago	Deconsolidation Assets Acquired Noncash DeconsolidationAssetsAcquiredNoncash	0	usd
CY2023	ago	Deconsolidation Assets Transferred Noncash DeconsolidationAssetsTransferredNoncash	240000000	usd
CY2022	ago	Deconsolidation Assets Transferred Noncash DeconsolidationAssetsTransferredNoncash	0	usd
CY2021	ago	Deconsolidation Assets Transferred Noncash DeconsolidationAssetsTransferredNoncash	0	usd
CY2023	ago	Deconsolidation Liabilities Transferred Noncash DeconsolidationLiabilitiesTransferredNoncash	66000000	usd
CY2022	ago	Deconsolidation Liabilities Transferred Noncash DeconsolidationLiabilitiesTransferredNoncash	0	usd
CY2021	ago	Deconsolidation Liabilities Transferred Noncash DeconsolidationLiabilitiesTransferredNoncash	0	usd
CY2023Q4	us-gaap	Cash Cash	97000000	usd
CY2022Q4	us-gaap	Cash Cash	107000000	usd
CY2021Q4	us-gaap	Cash Cash	120000000	usd
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	0	usd
CY2022Q4	us-gaap	Restricted Cash RestrictedCash	1000000	usd
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	2000000	usd
CY2023Q4	ago	Cash Of Financial Guaranty Variable Interest Entities CashOfFinancialGuarantyVariableInterestEntities	154000000	usd
CY2022Q4	ago	Cash Of Financial Guaranty Variable Interest Entities CashOfFinancialGuarantyVariableInterestEntities	2000000	usd
CY2021Q4	ago	Cash Of Financial Guaranty Variable Interest Entities CashOfFinancialGuarantyVariableInterestEntities	0	usd
CY2023Q4	ago	Cashof Consolidated Investment Vehicles CashofConsolidatedInvestmentVehicles	35000000	usd
CY2022Q4	ago	Cashof Consolidated Investment Vehicles CashofConsolidatedInvestmentVehicles	97000000	usd
CY2021Q4	ago	Cashof Consolidated Investment Vehicles CashofConsolidatedInvestmentVehicles	220000000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	286000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	207000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	342000000	usd
CY2023Q3	us-gaap	Equity Method Investments Fair Value Disclosure EquityMethodInvestmentsFairValueDisclosure	450000000	usd
CY2023Q3	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	262000000	usd
CY2023	ago	Cash Flow Projection Period CashFlowProjectionPeriod	P6Y
CY2023	ago	Cash Flow Projection Period CashFlowProjectionPeriod	P6Y
CY2023Q4	ago	Number Of Holding Companies Having Outstanding Public Debt NumberOfHoldingCompaniesHavingOutstandingPublicDebt	2	company
CY2023	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	13000000	usd
CY2023	ago	Employee Compensationand Benefitsand Other Operating Expenses EmployeeCompensationandBenefitsandOtherOperatingExpenses	468000000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	494000000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	269000000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	16000000	usd
CY2022	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	14000000	usd
CY2022	ago	Employee Compensationand Benefitsand Other Operating Expenses EmployeeCompensationandBenefitsandOtherOperatingExpenses	425000000	usd
CY2023	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2023	ago	Effective Income Tax Rate Reconciliation Economic Transition Adjustment Amount EffectiveIncomeTaxRateReconciliationEconomicTransitionAdjustmentAmount	189000000	usd
CY2022	us-gaap	Revenues Revenues	723000000	usd
CY2022	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	536000000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-39000000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11000000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	13000000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	124000000	usd
CY2021	us-gaap	Revenues Revenues	848000000	usd
CY2021	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	465000000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	94000000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	58000000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	30000000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	389000000	usd
CY2023	us-gaap	Premiums Earned Net PremiumsEarnedNet	344000000	usd
CY2023	us-gaap	Net Investment Income NetInvestmentIncome	365000000	usd
CY2023	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	162000000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	414000000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	269000000	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	-220000000	usd
CY2021	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	14000000	usd
CY2021	ago	Employee Compensationand Benefitsand Other Operating Expenses EmployeeCompensationandBenefitsandOtherOperatingExpenses	409000000	usd
CY2023Q4	ago	Insured Financial Obligations Loss Mitigation Securities InsuredFinancialObligationsLossMitigationSecurities	1200000000	usd
CY2022Q4	ago	Insured Financial Obligations Loss Mitigation Securities InsuredFinancialObligationsLossMitigationSecurities	1300000000	usd
CY2023Q4	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Gross InsuredFinancialObligationsInsuredContractualPaymentsOutstandingGross	398037000000	usd
CY2023Q4	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Net InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet	397636000000	usd
CY2022Q4	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Gross InsuredFinancialObligationsInsuredContractualPaymentsOutstandingGross	370172000000	usd
CY2022Q4	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Net InsuredFinancialObligationsInsuredContractualPaymentsOutstandingNet	369951000000	usd
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amount Gross InsuredFinancialObligationsOutstandingPrincipalAmountGross	249535000000	usd
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	249153000000	usd
CY2022Q4	ago	Insured Financial Obligations Outstanding Principal Amount Gross InsuredFinancialObligationsOutstandingPrincipalAmountGross	233438000000	usd
CY2022Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	233258000000	usd
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	249153000000	usd
CY2023Q4	ago	Insured Financial Obligations Outstanding Principle Amount Percentage InsuredFinancialObligationsOutstandingPrincipleAmountPercentage	1.000
CY2022Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	233258000000	usd
CY2022Q4	ago	Insured Financial Obligations Outstanding Principle Amount Percentage InsuredFinancialObligationsOutstandingPrincipleAmountPercentage	1.000
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	249153000000	usd
CY2022Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	233258000000	usd
CY2023Q4	ago	Insured Financial Obligations Maturitiesof Outstanding Principle Amount Zeroto Five Years InsuredFinancialObligationsMaturitiesofOutstandingPrincipleAmountZerotoFiveYears	53568000000	usd
CY2023Q4	ago	Insured Financial Obligations Maturitiesof Outstanding Principle Amount Fiveto Ten Years InsuredFinancialObligationsMaturitiesofOutstandingPrincipleAmountFivetoTenYears	54421000000	usd
CY2023Q4	ago	Insured Financial Obligations Maturitiesof Outstanding Principle Amount Tento Fifteen Years InsuredFinancialObligationsMaturitiesofOutstandingPrincipleAmountTentoFifteenYears	45320000000	usd
CY2023Q4	ago	Insured Financial Obligations Maturitiesof Outstanding Principle Amount Fifteento Twenty Years InsuredFinancialObligationsMaturitiesofOutstandingPrincipleAmountFifteentoTwentyYears	33264000000	usd
CY2023Q4	ago	Insured Financial Obligations Maturitiesof Outstanding Principle Amount Twentyand Above Years InsuredFinancialObligationsMaturitiesofOutstandingPrincipleAmountTwentyandAboveYears	62580000000	usd
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	249153000000	usd
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	249153000000	usd
CY2022Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	233258000000	usd
CY2023Q4	ago	Insured Financial Obligations Numberof Contracts InsuredFinancialObligationsNumberofContracts	7754	risk
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	249153000000	usd
CY2023Q4	ago	Insured Financial Obligations Outstanding Principal Amountas Percentageof Total Outstanding Principal InsuredFinancialObligationsOutstandingPrincipalAmountasPercentageofTotalOutstandingPrincipal	1.000
CY2023Q3	ago	Insured Financial Obligations Outstanding Principal Amount Net InsuredFinancialObligationsOutstandingPrincipalAmountNet	108000000	usd
CY2023	ago	Insured Financial Obligations Insured Exposure In Payment Default Number InsuredFinancialObligationsInsuredExposureInPaymentDefaultNumber	1	exposure
CY2023Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	1600000000	usd
CY2023	ago	Insured Financial Obligations Insured Credit Performanceof Guaranteed Obligations Term InsuredFinancialObligationsInsuredCreditPerformanceofGuaranteedObligationsTerm	P30Y
CY2023Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	505000000	usd
CY2022Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	522000000	usd
CY2023	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	164000000	usd
CY2022	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	-125000000	usd
CY2021	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	-287000000	usd
CY2023	ago	Insured Financial Obligations Claim Liability Weighted Average Risk Free Discount Rate InsuredFinancialObligationsClaimLiabilityWeightedAverageRiskFreeDiscountRate	0.0410
CY2022	ago	Insured Financial Obligations Claim Liability Weighted Average Risk Free Discount Rate InsuredFinancialObligationsClaimLiabilityWeightedAverageRiskFreeDiscountRate	0.0408
CY2022Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	522000000	usd
CY2021Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	411000000	usd
CY2020Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	529000000	usd
CY2023	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Accretion Of Discount GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount	20000000	usd
CY2022	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Accretion Of Discount GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount	16000000	usd
CY2021	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Accretion Of Discount GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesAccretionOfDiscount	7000000	usd
CY2023	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Changes In Discount Rates GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates	3000000	usd
CY2022	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Changes In Discount Rates GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates	-115000000	usd
CY2021	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Changes In Discount Rates GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInDiscountRates	-33000000	usd
CY2023	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Changes In Timing And Assumptions GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions	141000000	usd
CY2022	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Changes In Timing And Assumptions GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions	-26000000	usd
CY2021	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties Changes In Timing And Assumptions GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarrantiesChangesInTimingAndAssumptions	-261000000	usd
CY2023	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	164000000	usd
CY2022	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	-125000000	usd
CY2021	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	-287000000	usd
CY2023	ago	Guarantor Obligations Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties	181000000	usd
CY2022	ago	Guarantor Obligations Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties	-236000000	usd
CY2021	ago	Guarantor Obligations Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties	-169000000	usd
CY2023Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	505000000	usd
CY2022Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	522000000	usd
CY2021Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	411000000	usd
CY2022Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	522000000	usd
CY2023	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	164000000	usd
CY2023	ago	Guarantor Obligations Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties	181000000	usd
CY2023Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	505000000	usd
CY2021Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	411000000	usd
CY2022	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	-125000000	usd
CY2022	ago	Guarantor Obligations Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties	-236000000	usd
CY2022Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	522000000	usd
CY2020Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	529000000	usd
CY2021	ago	Guarantor Obligations Net Expected Loss Development After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLossDevelopmentAfterRecoveriesforRepresentationsandWarranties	-287000000	usd
CY2021	ago	Guarantor Obligations Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidAfterRecoveriesforRepresentationsandWarranties	-169000000	usd
CY2021Q4	ago	Guarantor Obligations Net Expected Losstobe Paid After Recoveriesfor Representationsand Warranties GuarantorObligationsNetExpectedLosstobePaidAfterRecoveriesforRepresentationsandWarranties	411000000	usd
CY2023	ago	Reinsurance Recoverables Periodafter Endof Reporting Periodfor Settlementof Ceded Paid Losses ReinsuranceRecoverablesPeriodafterEndofReportingPeriodforSettlementofCededPaidLosses	P45D
CY2023	ago	Insured Financial Obligations Liabilityfor Unpaid Claims Adjustment Expense Claims Paid InsuredFinancialObligationsLiabilityforUnpaidClaimsAdjustmentExpenseClaimsPaid	25000000	usd
CY2022	ago	Insured Financial Obligations Liabilityfor Unpaid Claims Adjustment Expense Claims Paid InsuredFinancialObligationsLiabilityforUnpaidClaimsAdjustmentExpenseClaimsPaid	33000000	usd
CY2021	ago	Insured Financial Obligations Liabilityfor Unpaid Claims Adjustment Expense Claims Paid InsuredFinancialObligationsLiabilityforUnpaidClaimsAdjustmentExpenseClaimsPaid	36000000	usd
CY2023Q4	ago	Expected Loss Adjustment Expense To Be Paid ExpectedLossAdjustmentExpenseToBePaid	22000000	usd
CY2022Q4	ago	Expected Loss Adjustment Expense To Be Paid ExpectedLossAdjustmentExpenseToBePaid	11000000	usd
CY2023	ago	Guarantor Obligations Projected Loss Assumptions Numberof Scenarios Considered GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered	5	scenario
CY2022	ago	Guarantor Obligations Projected Loss Assumptions Numberof Scenarios Considered GuarantorObligationsProjectedLossAssumptionsNumberofScenariosConsidered	5	scenario
CY2023	ago	Additional Loss Recovery Assumption Recovery Period AdditionalLossRecoveryAssumptionRecoveryPeriod	P5Y
CY2023	ago	Financial Guarantee Insurance Contracts Scheduled Net Earned Premiums FinancialGuaranteeInsuranceContractsScheduledNetEarnedPremiums	285000000	usd
CY2022	ago	Financial Guarantee Insurance Contracts Scheduled Net Earned Premiums FinancialGuaranteeInsuranceContractsScheduledNetEarnedPremiums	287000000	usd
CY2021	ago	Financial Guarantee Insurance Contracts Scheduled Net Earned Premiums FinancialGuaranteeInsuranceContractsScheduledNetEarnedPremiums	322000000	usd
CY2023	us-gaap	Financial Guarantee Insurance Contracts Accelerated Premium Revenue Amount FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount	29000000	usd
CY2022	us-gaap	Financial Guarantee Insurance Contracts Accelerated Premium Revenue Amount FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount	179000000	usd
CY2021	us-gaap	Financial Guarantee Insurance Contracts Accelerated Premium Revenue Amount FinancialGuaranteeInsuranceContractsAcceleratedPremiumRevenueAmount	59000000	usd
CY2023	ago	Financial Guarantee Insurance Contracts Net Premiums Receivable Adjustment Accretionof Discounton Net Premium Receivable FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable	-26000000	usd
CY2022	ago	Financial Guarantee Insurance Contracts Net Premiums Receivable Adjustment Accretionof Discounton Net Premium Receivable FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable	-24000000	usd
CY2021	ago	Financial Guarantee Insurance Contracts Net Premiums Receivable Adjustment Accretionof Discounton Net Premium Receivable FinancialGuaranteeInsuranceContractsNetPremiumsReceivableAdjustmentAccretionofDiscountonNetPremiumReceivable	-30000000	usd
CY2023	ago	Financial Guarantee Insurance Contracts Premiums Earned Net FinancialGuaranteeInsuranceContractsPremiumsEarnedNet	340000000	usd
CY2022	ago	Financial Guarantee Insurance Contracts Premiums Earned Net FinancialGuaranteeInsuranceContractsPremiumsEarnedNet	490000000	usd
CY2021	ago	Financial Guarantee Insurance Contracts Premiums Earned Net FinancialGuaranteeInsuranceContractsPremiumsEarnedNet	411000000	usd
CY2023	ago	Premiums Earned Net Specialty Insuranceand Reinsurance PremiumsEarnedNetSpecialtyInsuranceandReinsurance	4000000	usd
CY2022	ago	Premiums Earned Net Specialty Insuranceand Reinsurance PremiumsEarnedNetSpecialtyInsuranceandReinsurance	4000000	usd
CY2021	ago	Premiums Earned Net Specialty Insuranceand Reinsurance PremiumsEarnedNetSpecialtyInsuranceandReinsurance	3000000	usd
CY2023	us-gaap	Premiums Earned Net PremiumsEarnedNet	344000000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	494000000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	414000000	usd
CY2022Q4	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable FinancialGuaranteeInsuranceContractsPremiumReceivable	1298000000	usd
CY2021Q4	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable FinancialGuaranteeInsuranceContractsPremiumReceivable	1372000000	usd
CY2020Q4	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable FinancialGuaranteeInsuranceContractsPremiumReceivable	1372000000	usd
CY2022Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Specialty Insurance FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance	1000000	usd
CY2021Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Specialty Insurance FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance	1000000	usd
CY2020Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Specialty Insurance FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance	1000000	usd
CY2022Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Excluding Other FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOther	1297000000	usd
CY2021Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Excluding Other FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOther	1371000000	usd
CY2020Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Excluding Other FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOther	1371000000	usd
CY2023	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable New Business Written FinancialGuaranteeInsuranceContractsPremiumReceivableNewBusinessWritten	353000000	usd
CY2022	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable New Business Written FinancialGuaranteeInsuranceContractsPremiumReceivableNewBusinessWritten	356000000	usd
CY2021	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable New Business Written FinancialGuaranteeInsuranceContractsPremiumReceivableNewBusinessWritten	369000000	usd
CY2023	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable Proceeds From Premiums Received FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived	261000000	usd
CY2022	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable Proceeds From Premiums Received FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived	345000000	usd
CY2021	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable Proceeds From Premiums Received FinancialGuaranteeInsuranceContractsPremiumReceivableProceedsFromPremiumsReceived	383000000	usd
CY2023	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Change In Period Of Contract FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentChangeInPeriodOfContract	1000000	usd
CY2022	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Change In Period Of Contract FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentChangeInPeriodOfContract	2000000	usd
CY2021	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Change In Period Of Contract FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentChangeInPeriodOfContract	6000000	usd
CY2023	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Accretion Of Discount On Premium Receivable FinancialGuaranteeInsuranceContractsPremiumsReceivableAccretionOfDiscountOnPremiumReceivable	26000000	usd
CY2022	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Accretion Of Discount On Premium Receivable FinancialGuaranteeInsuranceContractsPremiumsReceivableAccretionOfDiscountOnPremiumReceivable	24000000	usd
CY2021	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Accretion Of Discount On Premium Receivable FinancialGuaranteeInsuranceContractsPremiumsReceivableAccretionOfDiscountOnPremiumReceivable	26000000	usd
CY2023	ago	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Foreign Exchange Translation FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation	51000000	usd
CY2022	ago	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Foreign Exchange Translation FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation	-111000000	usd
CY2021	ago	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment Foreign Exchange Translation FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustmentForeignExchangeTranslation	-22000000	usd
CY2023	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustment	0	usd
CY2022	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustment	0	usd
CY2021	us-gaap	Financial Guarantee Insurance Contracts Premiums Receivable Adjustment FinancialGuaranteeInsuranceContractsPremiumsReceivableAdjustment	4000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Excluding Other FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOther	1467000000	usd
CY2022Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Excluding Other FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOther	1297000000	usd
CY2021Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Excluding Other FinancialGuaranteeInsuranceContractsPremiumReceivableExcludingOther	1371000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Specialty Insurance FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance	1000000	usd
CY2022Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Specialty Insurance FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance	1000000	usd
CY2021Q4	ago	Financial Guarantee Insurance Contracts Premium Receivable Specialty Insurance FinancialGuaranteeInsuranceContractsPremiumReceivableSpecialtyInsurance	1000000	usd
CY2023Q4	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable FinancialGuaranteeInsuranceContractsPremiumReceivable	1468000000	usd
CY2022Q4	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable FinancialGuaranteeInsuranceContractsPremiumReceivable	1298000000	usd
CY2021Q4	us-gaap	Financial Guarantee Insurance Contracts Premium Receivable FinancialGuaranteeInsuranceContractsPremiumReceivable	1372000000	usd
CY2022Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	147000000	usd
CY2021Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	131000000	usd
CY2020Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	119000000	usd
CY2023	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	27000000	usd
CY2022	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	30000000	usd
CY2021	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	26000000	usd
CY2023	ago	Deferred Policy Acquisition Cost Amortization Expense Including Accretion Of Discount On Commissions DeferredPolicyAcquisitionCostAmortizationExpenseIncludingAccretionOfDiscountOnCommissions	13000000	usd
CY2022	ago	Deferred Policy Acquisition Cost Amortization Expense Including Accretion Of Discount On Commissions DeferredPolicyAcquisitionCostAmortizationExpenseIncludingAccretionOfDiscountOnCommissions	14000000	usd
CY2021	ago	Deferred Policy Acquisition Cost Amortization Expense Including Accretion Of Discount On Commissions DeferredPolicyAcquisitionCostAmortizationExpenseIncludingAccretionOfDiscountOnCommissions	14000000	usd
CY2023Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	161000000	usd
CY2022Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	147000000	usd
CY2021Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	131000000	usd
CY2023	us-gaap	Financial Guarantee Insurance Contracts Claim Liability Weighted Average Risk Free Discount Rate FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate	0.0417
CY2022	us-gaap	Financial Guarantee Insurance Contracts Claim Liability Weighted Average Risk Free Discount Rate FinancialGuaranteeInsuranceContractsClaimLiabilityWeightedAverageRiskFreeDiscountRate	0.0415
CY2023Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries	75000000	usd
CY2022Q4	ago	Reserve For Losses And Loss Adjustment Expenses Net Of Reinsurance And Salvage And Subrogation Recoveries ReserveForLossesAndLossAdjustmentExpensesNetOfReinsuranceAndSalvageAndSubrogationRecoveries	37000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed During First Quarter Following Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedDuringFirstQuarterFollowingBalanceSheetDate	3000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed During Second Quarter Following Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedDuringSecondQuarterFollowingBalanceSheetDate	3000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed During Third Quarter Following Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedDuringThirdQuarterFollowingBalanceSheetDate	3000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed During Fourth Quarter Following Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedDuringFourthQuarterFollowingBalanceSheetDate	3000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed During Fiscal Year Following Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedDuringFiscalYearFollowingBalanceSheetDate	12000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensedin Second Full Fiscal Year FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinSecondFullFiscalYear	12000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensedin Third Full Fiscal Year FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinThirdFullFiscalYear	16000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensedin Fourth Full Fiscal Year FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFourthFullFiscalYear	16000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensedin Fifth Full Fiscal Year FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedinFifthFullFiscalYear	15000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed Morethan Fiveand Within10 Yearsfrom Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedMorethanFiveandWithin10YearsfromBalanceSheetDate	69000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed Morethan10andwithin15 Yearsfrom Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedMorethan10andwithin15YearsfromBalanceSheetDate	48000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed Morethan15andwithin20 Yearsfrom Balance Sheet Date FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedMorethan15andwithin20YearsfromBalanceSheetDate	11000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Future Expected Net Losstobe Expensed Beyond Twentieth Fiscal Year FinancialGuaranteeInsuranceContractsFutureExpectedNetLosstobeExpensedBeyondTwentiethFiscalYear	11000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Net Losstobe Expensed Present Value FinancialGuaranteeInsuranceContractsNetLosstobeExpensedPresentValue	210000000	usd
CY2023Q4	ago	Scheduleof Insured Financial Obligationswith Credit Deterioration Reductionsof Gross Claim Liability Netof Reinsurance Recoverable Discount ScheduleofInsuredFinancialObligationswithCreditDeteriorationReductionsofGrossClaimLiabilityNetofReinsuranceRecoverableDiscount	19000000	usd
CY2023Q4	ago	Financial Guarantee Insurance Contracts Net Losstobe Expensed Undiscounted FinancialGuaranteeInsuranceContractsNetLosstobeExpensedUndiscounted	229000000	usd
CY2023	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	162000000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	16000000	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	-220000000	usd
CY2023Q4	ago	Insured Financial Obligations Insured Contractual Payments Outstanding Gross InsuredFinancialObligationsInsuredContractualPaymentsOutstandingGross	398000000000	usd
CY2023Q4	ago	Specialty Insuranceand Reinsurance Gross Par SpecialtyInsuranceandReinsuranceGrossPar	3800000000	usd
CY2023	us-gaap	Direct Premiums Written DirectPremiumsWritten	307000000	usd
CY2022	us-gaap	Direct Premiums Written DirectPremiumsWritten	377000000	usd
CY2021	us-gaap	Direct Premiums Written DirectPremiumsWritten	355000000	usd
CY2023	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	50000000	usd
CY2022	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	-17000000	usd
CY2021	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	22000000	usd
CY2023	us-gaap	Ceded Premiums Written CededPremiumsWritten	16000000	usd
CY2022	us-gaap	Ceded Premiums Written CededPremiumsWritten	0	usd
CY2021	us-gaap	Ceded Premiums Written CededPremiumsWritten	0	usd
CY2023	us-gaap	Premiums Written Net PremiumsWrittenNet	341000000	usd
CY2022	us-gaap	Premiums Written Net PremiumsWrittenNet	360000000	usd
CY2021	us-gaap	Premiums Written Net PremiumsWrittenNet	377000000	usd
CY2023	us-gaap	Direct Premiums Earned DirectPremiumsEarned	319000000	usd
CY2022	us-gaap	Direct Premiums Earned DirectPremiumsEarned	469000000	usd
CY2021	us-gaap	Direct Premiums Earned DirectPremiumsEarned	385000000	usd
CY2023	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	28000000	usd
CY2022	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	28000000	usd
CY2021	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	32000000	usd
CY2023	us-gaap	Ceded Premiums Earned CededPremiumsEarned	3000000	usd
CY2022	us-gaap	Ceded Premiums Earned CededPremiumsEarned	3000000	usd
CY2021	us-gaap	Ceded Premiums Earned CededPremiumsEarned	3000000	usd
CY2023	us-gaap	Premiums Earned Net PremiumsEarnedNet	344000000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	494000000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	414000000	usd
CY2023	ago	Policyholder Benefits And Claims Expense Benefit Direct PolicyholderBenefitsAndClaimsExpenseBenefitDirect	157000000	usd
CY2022	ago	Policyholder Benefits And Claims Expense Benefit Direct PolicyholderBenefitsAndClaimsExpenseBenefitDirect	32000000	usd
CY2021	ago	Policyholder Benefits And Claims Expense Benefit Direct PolicyholderBenefitsAndClaimsExpenseBenefitDirect	-203000000	usd
CY2023	ago	Policyholder Benefits And Claims Incurred Assumed Benefit Loss PolicyholderBenefitsAndClaimsIncurredAssumedBenefitLoss	8000000	usd
CY2022	ago	Policyholder Benefits And Claims Incurred Assumed Benefit Loss PolicyholderBenefitsAndClaimsIncurredAssumedBenefitLoss	-17000000	usd
CY2021	ago	Policyholder Benefits And Claims Incurred Assumed Benefit Loss PolicyholderBenefitsAndClaimsIncurredAssumedBenefitLoss	5000000	usd
CY2023	ago	Policyholder Benefits And Claims Incurred Ceded Benefit Loss PolicyholderBenefitsAndClaimsIncurredCededBenefitLoss	3000000	usd
CY2022	ago	Policyholder Benefits And Claims Incurred Ceded Benefit Loss PolicyholderBenefitsAndClaimsIncurredCededBenefitLoss	-1000000	usd
CY2021	ago	Policyholder Benefits And Claims Incurred Ceded Benefit Loss PolicyholderBenefitsAndClaimsIncurredCededBenefitLoss	22000000	usd
CY2023	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	162000000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	16000000	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	-220000000	usd
CY2023	us-gaap	Average Term Of Credit Risk Derivatives1 AverageTermOfCreditRiskDerivatives1	P11Y1M6D
CY2022	us-gaap	Average Term Of Credit Risk Derivatives1 AverageTermOfCreditRiskDerivatives1	P12Y9M18D
CY2023Q4	ago	Financial Guaranty Contracts Accountedforas Credit Derivatives Outstanding Principal Amount FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount	3608000000	usd
CY2023Q4	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	-50000000	usd
CY2022Q4	ago	Financial Guaranty Contracts Accountedforas Credit Derivatives Outstanding Principal Amount FinancialGuarantyContractsAccountedforasCreditDerivativesOutstandingPrincipalAmount	3203000000	usd
CY2022Q4	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	-162000000	usd
CY2023Q4	ago	Expected Losson Credit Derivativeto Be Paid Recovered Including Representationand Warranty Liability Benefit ExpectedLossonCreditDerivativetoBePaidRecoveredIncludingRepresentationandWarrantyLiabilityBenefit	2000000	usd
CY2022Q4	ago	Expected Losson Credit Derivativeto Be Paid Recovered Including Representationand Warranty Liability Benefit ExpectedLossonCreditDerivativetoBePaidRecoveredIncludingRepresentationandWarrantyLiabilityBenefit	3000000	usd
CY2023	ago	Credit Derivative Realized Gain Lossand Other Settlements CreditDerivativeRealizedGainLossandOtherSettlements	2000000	usd
CY2022	ago	Credit Derivative Realized Gain Lossand Other Settlements CreditDerivativeRealizedGainLossandOtherSettlements	-2000000	usd
CY2021	ago	Credit Derivative Realized Gain Lossand Other Settlements CreditDerivativeRealizedGainLossandOtherSettlements	-3000000	usd
CY2023	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	112000000	usd
CY2022	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-9000000	usd
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-55000000	usd
CY2023	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	114000000	usd
CY2022	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-11000000	usd
CY2021	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-58000000	usd
CY2023Q4	ago	Credit Risk Derivatives At Fair Value Before Effect Of Credit Spread Net CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet	-76000000	usd
CY2022Q4	ago	Credit Risk Derivatives At Fair Value Before Effect Of Credit Spread Net CreditRiskDerivativesAtFairValueBeforeEffectOfCreditSpreadNet	-207000000	usd
CY2023Q4	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities	26000000	usd
CY2022Q4	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Liabilities DerivativeCreditRiskValuationAdjustmentDerivativeLiabilities	45000000	usd
CY2023Q4	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	-50000000	usd
CY2022Q4	us-gaap	Credit Risk Derivatives At Fair Value Net CreditRiskDerivativesAtFairValueNet	-162000000	usd
CY2023	ago	Numberof Outside Managers Managing Investment Portfolio NumberofOutsideManagersManagingInvestmentPortfolio	3	manager
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	318000000	usd
CY2022Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	303000000	usd
CY2023Q4	us-gaap	Short Term Investments ShortTermInvestments	1661000000	usd
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	810000000	usd
CY2023Q4	us-gaap	Investments Investments	9115000000	usd
CY2022Q4	us-gaap	Investments Investments	8365000000	usd
CY2023	ago	Investments Accounted For As Consolidated Investment Vehicles InvestmentsAccountedForAsConsolidatedInvestmentVehicles	3	fund
CY2023	ago	Total Number Of Investments TotalNumberOfInvestments	8	fund
CY2022Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	71000000	usd
CY2023Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	71000000	usd
CY2023Q4	ago	Percentageof Availableforsale Securitiesat Amortized Cost PercentageofAvailableforsaleSecuritiesatAmortizedCost	1
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	6746000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	77000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	55000000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	417000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	6307000000	usd
CY2022Q4	ago	Percentageof Availableforsale Securitiesat Amortized Cost PercentageofAvailableforsaleSecuritiesatAmortizedCost	1
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	7707000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	65000000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	65000000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	588000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	7119000000	usd
CY2023Q4	ago	Government Agency Obligations As Percentage Of Total Mortgage Backed Securities GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities	0.42
CY2022Q4	ago	Government Agency Obligations As Percentage Of Total Mortgage Backed Securities GovernmentAgencyObligationsAsPercentageOfTotalMortgageBackedSecurities	0.30
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	766000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	7000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	3162000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	281000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	3928000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	288000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	274	security
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	1266	security
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	1525	security
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	3751000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	213000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1017000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	239000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	4768000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	452000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	1340	security
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	466	security
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	1776	security
CY2023Q4	ago	Available For Sale Securities Continuous Unrealized Loss Position Greater Than10 Percent Of Book Value Twelve Months Or Longer Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber	409	security
CY2022Q4	ago	Available For Sale Securities Continuous Unrealized Loss Position Greater Than10 Percent Of Book Value Twelve Months Or Longer Number AvailableForSaleSecuritiesContinuousUnrealizedLossPositionGreaterThan10PercentOfBookValueTwelveMonthsOrLongerNumber	567	security
CY2023Q4	ago	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Greater Than10 Percent Book Value Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses	200000000	usd
CY2022Q4	ago	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Greater Than10 Percent Book Value Aggregate Losses AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerGreaterThan10PercentBookValueAggregateLosses	329000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	331000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	325000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	1427000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	1368000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	1741000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	1675000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	2662000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	2446000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	6746000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	6307000000	usd
CY2023Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	234000000	usd
CY2022Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	222000000	usd
CY2022Q4	ago	Investment Non Income Producing Value InvestmentNonIncomeProducingValue	0	usd
CY2023Q4	ago	Investment Non Income Producing Value InvestmentNonIncomeProducingValue	0	usd
CY2023	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	370000000	usd
CY2022	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	274000000	usd
CY2021	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	275000000	usd
CY2023	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	5000000	usd
CY2022	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	5000000	usd
CY2021	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	6000000	usd
CY2023	us-gaap	Net Investment Income NetInvestmentIncome	365000000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	269000000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	269000000	usd
CY2023	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	74000000	usd
CY2022	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	-34000000	usd
CY2021	us-gaap	Debt Securities Trading Unrealized Gain Loss DebtSecuritiesTradingUnrealizedGainLoss	0	usd
CY2023	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	28000000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-39000000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	94000000	usd
CY2023	us-gaap	Fair Value Asset Liability Recurring Basis Still Held Unrealized Gain Loss FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss	31000000	usd
CY2022	us-gaap	Fair Value Asset Liability Recurring Basis Still Held Unrealized Gain Loss FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLoss	-29000000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	77000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	65000000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	42000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Purchased With Credit Deterioration Amount At Purchase Price DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtPurchasePrice	22000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Purchased With Credit Deterioration Amount At Par Value DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationAmountAtParValue	31000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Purchased With Credit Deterioration Allowance For Credit Loss At Acquisition Date DebtSecuritiesAvailableForSaleExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate	2000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Purchased With Credit Deterioration Discount Premium DebtSecuritiesAvailableForSalePurchasedWithCreditDeteriorationDiscountPremium	7000000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	21000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	3000000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	20000000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	19000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	45000000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	5000000	usd
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-1000000	usd
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-4000000	usd
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	2000000	usd
CY2023	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	14000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	21000000	usd
CY2021	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	7000000	usd
CY2023	ago	Net Realized Investment Gains Losses NetRealizedInvestmentGainsLosses	-1000000	usd
CY2022	ago	Net Realized Investment Gains Losses NetRealizedInvestmentGainsLosses	11000000	usd
CY2021	ago	Net Realized Investment Gains Losses NetRealizedInvestmentGainsLosses	5000000	usd
CY2023	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-14000000	usd
CY2022	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-56000000	usd
CY2021	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	15000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	65000000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	42000000	usd
CY2020Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	78000000	usd
CY2023	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded	0	usd
CY2022	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded	7000000	usd
CY2021	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded	4000000	usd
CY2023	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	0	usd
CY2022	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	2000000	usd
CY2021	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	0	usd
CY2023	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	12000000	usd
CY2022	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	14000000	usd
CY2021	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	2000000	usd
CY2023	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold	0	usd
CY2022	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold	0	usd
CY2021	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold	42000000	usd
CY2023Q4	ago	Variable Interest Entity Other Consolidated Carrying Amount Assets VariableInterestEntityOtherConsolidatedCarryingAmountAssets	92000000	usd
CY2023Q4	ago	Variable Interest Entity Other Consolidated Carrying Amount Liabilities VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities	7000000	usd
CY2022Q4	ago	Variable Interest Entity Other Consolidated Carrying Amount Assets VariableInterestEntityOtherConsolidatedCarryingAmountAssets	86000000	usd
CY2022Q4	ago	Variable Interest Entity Other Consolidated Carrying Amount Liabilities VariableInterestEntityOtherConsolidatedCarryingAmountLiabilities	12000000	usd
CY2023Q4	ago	Variable Interest Entity Numberof Policies Monitored VariableInterestEntityNumberofPoliciesMonitored	15000	policy
CY2023Q4	ago	Variable Interest Entity Numberof Policies Monitored Not Withinthe Scopeof Asc810 VariableInterestEntityNumberofPoliciesMonitoredNotWithintheScopeofASC810	14000	policy
CY2023Q4	ago	Variable Interest Entity Numberof Policiesthat Contain Provisionsfor Consolidation VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation	68	policy
CY2022Q4	ago	Variable Interest Entity Numberof Policiesthat Contain Provisionsfor Consolidation VariableInterestEntityNumberofPoliciesthatContainProvisionsforConsolidation	85	policy
CY2023Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	326000000	usd
CY2023Q4	ago	Variable Interest Entity Carrying Value Of Investments Not Consolidated VariableInterestEntityCarryingValueOfInvestmentsNotConsolidated	314000000	usd
CY2023Q4	ago	Variable Interest Entity Other Assets Not Consolidated VariableInterestEntityOtherAssetsNotConsolidated	12000000	usd
CY2022Q4	us-gaap	Assets Sold Under Agreements To Repurchase Repurchase Liability AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability	35000000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	53000000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	93000000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	88000000	usd
CY2023	ago	Share Basedand Employee Stock Purchase Plan Expense Netof Capitalized Costs ShareBasedandEmployeeStockPurchasePlanExpenseNetofCapitalizedCosts	36000000	usd
CY2022	ago	Share Basedand Employee Stock Purchase Plan Expense Netof Capitalized Costs ShareBasedandEmployeeStockPurchasePlanExpenseNetofCapitalizedCosts	39000000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	0	usd
CY2022Q4	us-gaap	Goodwill Goodwill	117000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1000000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	82000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1000000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	42000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	0	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	40000000	usd
CY2023Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	6000000	usd
CY2022Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	6000000	usd
CY2023Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	6000000	usd
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	163000000	usd
CY2023	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
CY2023	us-gaap	Adjustment For Amortization AdjustmentForAmortization	2000000	usd
CY2022	us-gaap	Adjustment For Amortization AdjustmentForAmortization	11000000	usd
CY2021	us-gaap	Adjustment For Amortization AdjustmentForAmortization	12000000	usd
CY2023Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1746000000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	1694000000	usd
CY2022Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	1726000000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	1675000000	usd
CY2021	ago	Share Basedand Employee Stock Purchase Plan Expense Netof Capitalized Costs ShareBasedandEmployeeStockPurchasePlanExpenseNetofCapitalizedCosts	27000000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	350000000	usd
CY2023Q4	ago	Long Term Debt Maturities Repayments Of Principal In Years Six Through Twenty Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearsSixThroughTwentyFive	700000000	usd
CY2023Q4	ago	Long Term Debt Maturities Repayments Of Principal In Years Twenty Six Through Forty Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearsTwentySixThroughFortyFive	696000000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1746000000	usd
CY2023	us-gaap	Interest Expense InterestExpense	90000000	usd
CY2022	us-gaap	Interest Expense InterestExpense	81000000	usd
CY2021	us-gaap	Interest Expense InterestExpense	87000000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	3000000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	3000000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	2000000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5000000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6000000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4000000	usd
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	16000000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	20000000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	20000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	250000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	114000000	usd
CY2023Q4	ago	Deferred Tax Assets Liabilities Net Current1 DeferredTaxAssetsLiabilitiesNetCurrent1	-9000000	usd
CY2022Q4	ago	Deferred Tax Assets Liabilities Net Current1 DeferredTaxAssetsLiabilitiesNetCurrent1	63000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	11000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	26000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	49000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	70000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	149000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	0	usd
CY2023Q4	ago	Deferred Tax Assets Value Of In Force Business DeferredTaxAssetsValueOfInForceBusiness	45000000	usd
CY2022Q4	ago	Deferred Tax Assets Value Of In Force Business DeferredTaxAssetsValueOfInForceBusiness	0	usd
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$AGO ASSURED GUARANTY LTD Stock $ago

2024 Q1 Form 10-K Financial Statement

#000127381324000007 Filed on February 28, 2024

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Files In Submission

$AGO
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